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1.
  • Asp, Joline, et al. (författare)
  • Alcohol exposure prior to pregnancy-does hazardous consumption affect placenta- and inflammatory-mediated pregnancy outcomes? A Swedish population-based cohort study.
  • 2022
  • Ingår i: Acta obstetricia et gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 101:12, s. 1386-1394
  • Tidskriftsartikel (refereegranskat)abstract
    • Alcohol consumption during pregnancy is related to severe birth complications such as low birthweight, preterm birth and birth defects. During the last decade, the Alcohol Use Disorders Identification Test (AUDIT) has been used as a screening tool in Swedish maternal healthcare units to identify hazardous, pre-pregnancy alcohol use. However, evaluation of the screening with AUDIT, as well as adverse maternal or neonatal outcomes, has not been assessed at a national level.This was a population-based cohort study of 530458 births from 2013 to 2018 using demographic, reproductive and maternal health data from the Swedish Pregnancy Register. Self-reported alcohol consumption in the year before pregnancy, measured as AUDIT scores, was categorized into moderate (6-13 points) and high-risk (14-40 points) consumption, with low-risk (0-5 points) consumption as the reference group. Associations with pregnancy- and birth outcomes were explored with logistic regressions using generalized estimating equation models, adjusting for maternal and socioeconomic characteristics. Estimates are presented as adjusted odds ratios (aORs) with 95% confidence intervals (CIs).High-risk and moderate pre-pregnancy alcohol consumption was associated with preeclampsia, preterm birth and birth of an infant small for gestational age (SGA), but these associations were nonsignificant after adjustments. Prior moderate-risk (aOR 1.29, 95% CI 1.17-1.42) and high-risk consumption (aOR 1.62, 95% CI 1.17-2.25) increased the likelihood of intrapartum and neonatal infections.Apart from identifying hazardous alcohol consumption prior to pregnancy and the offer of counseling, screening with the AUDIT in early pregnancy indicates a high risk of inflammatory-/placenta-mediated pregnancy and birth outcomes. For most outcomes, AUDIT was not an independent contributor when adjusting for confounding factors. Hazardous alcohol use prior to pregnancy was independently linked to intrapartum and neonatal infections; conditions associated with morbidity and long-term sequalae. These associations may be explained by alcohol-induced changes in the maternal or fetal immune system in early pregnancy or persistent alcohol intake during pregnancy, or may depend on unidentified confounding factors.
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2.
  • Akhter, Tansim, 1967-, et al. (författare)
  • Maternal and Perinatal Outcomes in Singleton Nulliparous Spontaneous Preterm Birth with and without Preterm Premature Rupture of Membranes—A National Population-Based Cohort Study
  • 2022
  • Ingår i: American Journal of Perinatology. - : Georg Thieme Verlag KG. - 0735-1631 .- 1098-8785.
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective Preterm birth (PTB, birth before 37 gestational weeks) is the leading cause of neonatal death and a major challenge for obstetric and neonatal care. About two-thirds of PTBs are spontaneous PTB (sPTB), of which approximately 30% start with preterm premature rupture of membranes (PPROM). The aim of the study was to investigate risk factors and maternal and perinatal outcomes in sPTB with and without PPROM.Study Design This is a national population-based cohort study including all singleton pregnancies in nulliparous women with spontaneous onset of labor and vaginal births (n = 266,968) registered in the Swedish Medical Birth Register 2005 to 2014. sPTB with PPROM (sPTB-PPROM) and sPTB without PPROM were compared regarding risk factors and maternal and perinatal outcomes. Logistic regression was used to estimate adjusted odds ratios (aORs) with 95% confidence intervals (CIs). Adjustments were made for maternal age, body mass index, country of birth, smoking, chronic hypertension, pregestational and gestational diabetes, and gestational length.Results sPTB-PPROM (n = 5,037), compared with sPTB without PPROM (n = 8,426), was more common in women with previous spontaneous abortions, prepregnancy urinary tract infections, chronic hypertension, and gestational diabetes and had a higher risk of postpartum endometritis (aOR: 2.78, 95% CI: 1.55–5.00). Infants born to women with sPTB-PPROM had a lower risk of birth asphyxia (aOR: 0.60, 95% CI: 0.43–0.83), respiratory distress syndrome (aOR: 0.86, 95% CI: 0.70–1.00), retinopathy of prematurity (aOR: 0.93, 95% CI: 0.92–0.94), necrotizing enterocolitis (aOR: 0.95, 95% CI: 0.94–0.96), and higher risk of hypoglycemia (aOR: 1.14, 95% CI: 1.01–1.28), and hyperbilirubinemia (aOR: 1.28, 95% CI: 1.19–1.38) compared with infants born to sPTB without PPROM.Conclusion Our findings of risk factors and distinct differences in adverse outcomes after sPTB-PPROM compared with sPTB without PPROM are of vital importance and might serve as a basis when elaborating programs for the prevention and management of PPROM.
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4.
  • Ankarcrona, Victoria, et al. (författare)
  • Attitudes and knowledge regarding episiotomy use and technique in vacuum extraction : A web-based survey among doctors in Sweden
  • 2022
  • Ingår i: European Journal of Obstetrics, Gynecology, and Reproductive Biology. - : Elsevier. - 0301-2115 .- 1872-7654. ; 269, s. 62-70
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: Correct episiotomy use and technique may prevent obstetric anal sphincter injuries. We aimed to explore the attitudes, use, and technique regarding episiotomy among doctors in Sweden, and their willingness to contribute to a randomized controlled trial of lateral episiotomy or no episiotomy in vacuum extraction in nulliparous women.Study design: A web-based survey was sent to members of the Swedish Society of Obstetrics and Gynecology (n = 2140). The survey included 31 questions addressing personal characteristics, use of episiotomy, a two-dimensional picture on which the respondents drew an episiotomy, and questions regarding attitudes towards episiotomy and participation in a randomized controlled trial. We calculated the proportion of supposedly protective episiotomies (fulfilling criteria of a lateral or mediolateral episiotomy and a length >= 30 mm). We compared the results between obstetricians, gynecologists, and residents using Chi-square and Kruskal-Wallis tests for differences between groups, and logistic regression to estimate the odds ratio (OR) of drawing a protective episiotomy.Results: We received 432 responses. Doctors without a vacuum delivery in the past year were excluded, leaving 384 respondents for further analyses. In all, 222 (57.8%) doctors reported use of episiotomy in<50% of vacuum extractions. We obtained 308 illustrated episiotomies with a median angle of 53 degrees, incision point distance from the midline of 21 mm, and length of 36 mm, corresponding to a lateral episiotomy. Few doctors combined these parameters correctly resulting in 167 (54.2%) incorrectly drawn episiotomies. Residents drew shorter episiotomies than obstetricians and gynecologists. Doctors ranked episiotomy the least important intervention to prevent obstetric anal sphincter injuries in vacuum extraction. Doctors contributing to an ongoing randomized controlled trial of lateral episiotomy or no episiotomy in vacuum extraction were more able to draw a protective episiotomy (OR 3.69, 95% confidence interval 1.94-7.02).Conclusions: Doctors in Sweden reported restrictive use of episiotomy in vacuum extraction and depicted lateral type episiotomies, although the majority were incorrectly drawn. Preventive episiotomy was ranked of low importance. Our results imply a need for education, training, and guidelines to increase uptake of correct episiotomy technique, which could result in improved prevention of obstetric anal sphincter injuries.
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5.
  • Bergendahl, Sandra, et al. (författare)
  • Lateral episiotomy or no episiotomy in vacuum assisted delivery in nulliparous women (EVA) : multicentre, open label, randomised controlled trial
  • 2024
  • Ingår i: BMJ. British Medical Journal. - : BMJ Publishing Group Ltd. - 0959-8146 .- 0959-535X. ; 385, s. e079014-
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To assess the effect of lateral episiotomy, compared with no episiotomy, on obstetric anal sphincter injury in nulliparous women requiring vacuum extraction. Design: A multicentre, open label, randomised controlled trial.Setting: Eight hospitals in Sweden, 2017-23.Participants: 717 nulliparous women with a single live fetus of 34 gestational weeks or more, requiring vacuum extraction were randomly assigned (1:1) to lateral episiotomy or no episiotomy using sealed opaque envelopes. Randomisation was stratified by study site.Intervention: A standardised lateral episiotomy was performed during the vacuum extraction, at crowning of the fetal head, starting 1-3 cm from the posterior fourchette, at a 60° (45-80°) angle from the midline, and 4 cm (3-5 cm) long. The comparison was no episiotomy unless considered indispensable.Main outcome measures: The primary outcome of the episiotomy in vacuum assisted delivery (EVA) trial was obstetric anal sphincter injury, clinically diagnosed by combined visual inspection and digital rectal and vaginal examination. The primary analysis used a modified intention-to-treat population that included all consenting women with attempted or successful vacuum extraction. As a result of an interim analysis at significance level P<0.01, the primary endpoint was tested at 4% significance level with accompanying 96% confidence interval (CI).Results: From 1 July 2017 to 15 February 2023, 717 women were randomly assigned: 354 (49%) to lateral episiotomy and 363 (51%) to no episiotomy. Before vacuum extraction attempt, one woman withdrew consent and 14 had a spontaneous birth, leaving 702 for the primary analysis. In the intervention group, 21 (6%) of 344 women sustained obstetric anal sphincter injury, compared with 47 (13%) of 358 women in the comparison group (P=0.002). The risk difference was -7.0% (96% CI -11.7% to -2.5%). The risk ratio adjusted for site was 0.47 (96% CI 0.23 to 0.97) and unadjusted risk ratio was 0.46 (0.28 to 0.78). No significant differences were noted between groups in postpartum pain, blood loss, neonatal outcomes, or total adverse events, but the intervention group had more wound infections and dehiscence.Conclusions: Lateral episiotomy can be recommended for nulliparous women requiring vacuum extraction to significantly reduce the risk of obstetric anal sphincter injury. Trial registration: ClinicalTrials.gov NCT02643108.
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6.
  • Bergendahl, Sandra, et al. (författare)
  • Lateral episiotomy versus no episiotomy to reduce obstetric anal sphincter injury in vacuum-assisted delivery in nulliparous women : Study protocol on a randomised controlled trial
  • 2019
  • Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 9:3
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction Obstetric anal sphincter injury (OASIS) occurs in 5%-7% of normal deliveries and increases with vacuum extraction (VE) to 12%-14% in nulliparous women in Sweden. Lateral/mediolateral episiotomy may reduce the prevalence of OASIS at VE in nulliparous women. The current use of episiotomy is restrictive. The protective effect and consequences are uncertain. This trial will investigate if lateral episiotomy can reduce the prevalence of OASIS and assess short-term and long-term effects. Methods and analysis This is a multicentre randomised controlled trial of lateral episiotomy versus no episiotomy in nulliparous women with a singleton, live fetus, after gestational week 34+0 with indication for VE. A lateral episiotomy of 4 cm is cut at crowning, 1-3 cm from the midline, at a 60° angle. The primary outcome is OASIS by clinical diagnosis analysed according to intention to treat. To demonstrate a 50% reduction in OASIS prevalence (from 12.4% to 6.2%), 710 women will be randomised at a 1:1 ratio. Secondary outcomes are pain, blood loss, other perineal injuries, perineal complications, Apgar score, cord pH and neonatal complications. Web-based questionnaires at baseline, 2 months, 1 and 5 years will be used to assess pain, incontinence, prolapse, sexual function, quality of life and childbirth experience. A subset of women will receive follow-up by pelvic floor sonography and pelvic examination. Mode of delivery and recurrence of OASIS/episiotomy in subsequent pregnancies will be assessed at 5 and 10 years using register data. Ethics and dissemination The trial is open for enrolment. The trial has received ethical approval from the Regional Ethical Review Board of Stockholm and full funding from the Swedish Research Council. Women are interested in participation. The predominant restrictive view on episiotomy may limit recruitment. Results are of global interest and will be disseminated in peer-reviewed journals and at international congresses.
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7.
  • Bergman, Lina, 1982, et al. (författare)
  • Cognitive impairment in preeclampsia complicated by eclampsia and pulmonary edema after delivery
  • 2021
  • Ingår i: Acta Obstetricia Et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 100:7, s. 1280-1287
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction We aimed to assess cognitive function in women with preeclampsia stratified by severity, before and after onset of disease. Material and methods Prospective study performed at a referral hospital in Cape Town, South Africa. Pregnant women between 20 and 42 weeks of gestation with eclampsia, pulmonary edema and preeclampsia without severe features, and a normotensive pregnancy were approached. Women were included at diagnosis of preeclampsia or at admission for delivery (women with normotensive pregnancies). Two cognitive assessments, the Cognitive Failure Questionnaire to assess the cognitive function subjectively before inclusion in the study, and Montreal Cognitive Assessment to assess the current cognitive function objectively before discharge from the hospital after delivery, were performed. Results We included 61 women with eclampsia, 28 with preeclampsia complicated by pulmonary edema, 38 with preeclampsia without severe features, and 26 with normotensive pregnancies. There was no difference in cognitive function from early pregnancy between groups. Women with eclampsia and preeclampsia complicated by pulmonary edema scored lower on the Montreal Cognitive Assessment at time of discharge compared with women with normotensive pregnancies. The results were attenuated in pulmonary edema after adjustment for confounders. Conclusions Women with preeclampsia complicated by pulmonary edema and in particular eclampsia had impaired cognitive function after onset of disease compared with women with normotensive pregnancies. The impairment did not seem to be present before onset of disease. Women with preeclampsia without severe features did not have impaired cognitive function.
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8.
  • Bergman, Lina, et al. (författare)
  • Multi-Fetal Pregnancy, Preeclampsia, and Long-Term Cardiovascular Disease
  • 2020
  • Ingår i: Hypertension. - 0194-911X .- 1524-4563. ; 76:1, s. 167-175
  • Tidskriftsartikel (refereegranskat)abstract
    • This Swedish register-based cohort study determined the separate and joint contribution of preeclampsia and multi-fetal pregnancy on a woman's risk of cardiovascular disease (CVD) later in life. The study included 892 425 first deliveries between 1973 and 2010 of women born 1950 until 1971, identified in the Swedish Medical Birth Register. A composite outcome of CVD was retrieved through linkage with the National Patient and Cause of Death Registers. Cox proportional hazard regression was used to assess the risk of CVD in women who had preeclampsia in a singleton or multi-fetal pregnancy, adjusting for potential confounders, and presented as adjusted hazard ratios. Compared with women who had a singleton pregnancy without preeclampsia (the referent group), women with preeclampsia in a singleton pregnancy had an increased risk of CVD (adjusted hazard ratio 1.75 [95% CI, 1.64-1.86]). Women who had a multi-fetal pregnancy without or with preeclampsia did not have an increased risk of future CVD (adjusted hazard ratios 0.94 [95% CI, 0.79-1.10] and 1.25 [95% CI, 0.83-1.86], respectively). As opposed to preeclampsia in a first singleton pregnancy, preeclampsia in a first multi-fetal pregnancy was not associated with increased risk of future CVD. This may support the theory that preeclampsia in multi-fetal pregnancies more often occurs as a result of the larger pregnancy-related burden on the maternal cardiovascular system and excessive placenta-shed inflammatory factors, rather than the woman's underlying cardiovascular phenotype.
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9.
  • Cluver, C. A., et al. (författare)
  • The association of prenatal alcohol exposure on the cognitive abilities and behaviour profiles of 4-year-old children: a prospective cohort study
  • 2019
  • Ingår i: Bjog-an International Journal of Obstetrics and Gynaecology. - : Wiley. - 1470-0328 .- 1471-0528. ; 126:13, s. 1588-1597
  • Tidskriftsartikel (refereegranskat)abstract
    • ObjectiveTo examine the association of prenatal alcohol exposure (PAE) on cognitive abilities and behaviour profiles of 4-year-old children. DesignProspective cohort study. SettingCape Town, South Africa. PopulationA cohort of 500 children. MethodsChildren from the Safe Passage Study, which prospectively collected PAE, were included. Cognition and behavioural profiles were assessed. Children with and without PAE were compared. Mean scores were compared, with P <= 0.05 considered significant. Results were adjusted for confounding factors. Main outcome measuresThe Kaufman Assessment Battery for children measured intellectual and mental ability; the NEPSY-II instrument assessed neurocognitive performance. The caregiver completed the Preschool Child Behaviour checklist to rate the child's problem behaviours and competencies. ResultsTwo hundred children had no PAE, 117 children had mild to moderate PAE (with no binge episodes), 113 children had heavy PAE (with one or two binge episodes), and 70 children had very heavy PAE (with three or more binge episodes). Women who binge drank had significantly higher rates of smoking, marijuana use, and methamphetamine use. Low to moderate PAE had no effect on cognitive ability and behaviour. Very heavy PAE was associated with problems performing simultaneous as well as sequential functions, lower scores in the language and sensorimotor domain, and more attention and pervasive developmental problems. ConclusionsLow to moderate PAE was not associated with cognitive processing or developmental problems. Women who had many binge drinking episodes during pregnancy were the most at risk for cognitive processing, neurocognitive, and behaviour problems in their children at 4 years of age. Tweetable abstractLow to moderate prenatal alcohol use was not associated with cognitive or behavioural problems in 4-year-olds. Tweetable abstract Low to moderate prenatal alcohol use was not associated with cognitive or behavioural problems in 4-year-olds.
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10.
  • Ekelöf, Katarina, et al. (författare)
  • A hybrid type I, multi-center randomized controlled trial to study the implementation of a method for Sustained cord circulation And VEntilation (the SAVE-method) of late preterm and term neonates : a study protocol
  • 2022
  • Ingår i: BMC Pregnancy and Childbirth. - : Springer Science and Business Media LLC. - 1471-2393. ; 22, s. 1-13
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: An intact umbilical cord allows the physiological transfusion of blood from the placenta to the neonate, which reduces infant iron deficiency and is associated with improved development during early childhood. The implementation of delayed cord clamping practice varies depending on mode of delivery, as well as gestational age and neonatal compromise. Emerging evidence shows that infants requiring resuscitation would benefit if respiratory support were provided with the umbilical cord intact. Common barriers to providing intact cord resuscitation is the availability of neonatal resuscitation equipment close to the mother, organizational readiness for change as well as attitudes and beliefs about placental transfusion within the multidisciplinary team. Hence, clinical evaluations of cord clamping practice should include implementation outcomes in order to develop strategies for optimal cord management practice.METHODS: The Sustained cord circulation And Ventilation (SAVE) study is a hybrid type I randomized controlled study combining the evaluation of clinical outcomes with implementation and health service outcomes. In phase I of the study, a method for providing in-bed intact cord resuscitation was developed, in phase II of the study the intervention was adapted to be used in multiple settings. In phase III of the study, a full-scale multicenter study will be initiated with concurrent evaluation of clinical, implementation and health service outcomes. Clinical data on neonatal outcomes will be recorded at the labor and neonatal units. Implementation outcomes will be collected from electronic surveys sent to parents as well as staff and managers within the birth and neonatal units. Descriptive and comparative statistics and regression modelling will be used for analysis. Quantitative data will be supplemented by qualitative methods using a thematic analysis with an inductive approach.DISCUSSION: The SAVE study enables the safe development and evaluation of a method for intact cord resuscitation in a multicenter trial. The study identifies barriers and facilitators for intact cord resuscitation. The knowledge provided from the study will be of benefit for the development of cord clamping practice in different challenging clinical settings and provide evidence for development of clinical guidelines regarding optimal cord clamping.TRIAL REGISTRATION: Clinicaltrials.gov, NCT04070560 . Registered 28 August 2019.
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11.
  • Ericson, Jenny, et al. (författare)
  • Women's experiences of receiving information about and consenting or declining to participate in a randomized controlled trial involving episiotomy in vacuum-assisted delivery : a qualitative study
  • 2021
  • Ingår i: Trials. - : BioMed Central (BMC). - 1745-6215. ; 22:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Information about and invitation to participate in a clinical trial involving an intervention during childbirth may cause fear or worry in pregnant women. The aim of this study was to describe nulliparous women's experiences of receiving an invitation to participate in a randomized controlled trial (RCT) of lateral episiotomy versus no episiotomy in vacuum-assisted delivery (EVA trial). Methods: This qualitative study was nested in the ongoing EVA trial. Data were collected through semistructured telephone interviews with 23 women regarding their experiences of the information and invitation to participate in the EVA trial. Interviews were audio-recorded and transcribed verbatim. A qualitative content analysis was used to analyse the interview contents. Results: Three main experience categories were identified among the participants. "Timing of trial information and understanding" revealed that women preferred to obtain information about the trial early on during pregnancy. "Reasons to consent to or decline participation in the trial" encompassed a variety of reasons for women to consent, such as goodwill for science or personal benefits, or to decline, such as not wanting to be randomized or fear of increased risk of having a vacuum-assisted delivery. "Thoughts evoked regarding childbirth" were diverse, ranging from not being affected at all to having increased anxiety. Conclusions: The women's experience of receiving an invitation to participate in an RCT of episiotomy in vacuum-assisted delivery varied widely, from immediately giving consent without further worries to increased anxiety or declining participation. Early and personal information with time for reflection was considered most satisfactory.
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12.
  • Eriksson, Carolina, et al. (författare)
  • Fetal station at caesarean section and risk of subsequent preterm birth- A cohort study
  • 2022
  • Ingår i: European Journal of Obstetrics, Gynecology, and Reproductive Biology. - : Elsevier. - 0301-2115 .- 1872-7654. ; 275, s. 18-23
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: An increased risk of preterm birth (PTB) following a caesarean section (CS) in the second stage of labor has been demonstrated. We aimed to investigate the relationship between the station of the presenting fetal part and the surgical technique at first CS, and the risk of subsequent PTB.Study design: This was a cohort study of 11,850 women in Sweden, delivered by CS in 2001-2007 at any of 23 birth units, with a second delivery in 2001-2009. Clinical information was retrieved from electronic birth records linked to national health registers. The risk of subsequent PTB was analyzed by fetal station, defined as low (at or below the ischial spines) or high (above the ischial spines), and aspects of the surgical technique at index CS. Associations were explored with logistic regression and results are presented as odds ratios (ORs) with 95% confidence intervals (CIs), by type and severity (very early < 32 gestational weeks and moderate preterm 32-36 gestational weeks) of PTB. Multiple logistic regression included adjustments for maternal age, gestational age at first delivery, and inter-delivery interval.Results: Out of 11,850 women delivered by CS, 1,016 (8.6%) delivered preterm in their subsequent pregnancy. There was an increased likelihood of spontaneous PTB, but not with medically indicated PTB, after an index CS with the fetal presenting part at a low station (aOR 1.61, 95% CI 1.23-2.11). CS performed at a low station was associated with birth < 32 gestational weeks (aOR 1.73, 95% CI 1.05-2.84) and birth at 32-36 gestational weeks (aOR 1.29, 95% CI 1.00-1.65), compared with high fetal station. Thickness of the uterine wall, incision type, and closure of the uterus at index CS did not affect the risk.Conclusion: A primary CS at a low station was associated with a subsequent spontaneous PTB, but not medically indicated PTB. Surgical technique at index CS did not alter the risk.
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13.
  • Hastie, Roxanne, et al. (författare)
  • Aspirin use during pregnancy and the risk of bleeding complications : a Swedish population-based cohort study
  • 2021
  • Ingår i: American Journal of Obstetrics and Gynecology. - : Elsevier. - 0002-9378 .- 1097-6868. ; 224:1, s. 95.e1-95.e12
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Aspirin is offered to pregnant women to prevent preeclampsia, a severe obstetrical complication. Large studies of nonpregnant populations have consistently shown that aspirin prophylaxis increases the risk of hemorrhagic complications. However, there have not been any population-based studies investigating this in a pregnant population.OBJECTIVE: This study aimed to investigate whether aspirin use during pregnancy is associated with an increased risk of bleeding complications.STUDY DESIGN: We performed a register-based cohort study using the Swedish Pregnancy Register wherein we examined 313,624 women giving birth between January 2013 and July 2017. Logistic regression was used to assess the risk of antepartum, intrapartum, and postpartum hemorrhage. A propensity score and inverse probability treatment weighting was used to generate an odds ratio that corrects for differences in baseline characteristics.RESULTS: Aspirin use was registered in 4088 (1.3%) women during pregnancy. Compared with women who did not take aspirin, aspirin use was not associated with bleeding complications during the antepartum period (adjusted odds ratio, 1.22; 95% confidence interval, 0.97-1.54). However, aspirin users had a higher incidence of intrapartum bleeding (2.9% aspirin users vs 1.5% nonusers; adjusted odds ratio, 1.63; 95% confidence interval, 1.30-2.05), postpartum hemorrhage (10.2% vs 7.8%; adjusted odds ratio, 1.23; 95% confidence interval, 1.08-1.39), and postpartum hematoma (0.4% vs 0.1%; adjusted odds ratio, 2.21; 95% confidence interval, 1.13-4.34). The risk of a neonatal intracranial hemorrhage was also increased (0.07% vs 0.01%; adjusted odds ratio, 9.66; 95% confidence interval, 1.88-49.48). After stratifying by mode of birth, a higher incidence of bleeding among aspirin users was present for those who had a vaginal birth but not those who had a cesarean delivery.CONCLUSION: Using aspirin during pregnancy is associated with increased postpartum bleeding and postpartum hematoma. It may also be associated with neonatal intracranial hemorrhage. When offering aspirin during pregnancy, these risks need to be weighed against the potential benefits.
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14.
  • Hastie, R., et al. (författare)
  • Duration of labor among women with hypertensive disorders of pregnancy; A Swedish register cohort study
  • 2020
  • Ingår i: European Journal of Obstetrics and Gynecology and Reproductive Biology. - : Elsevier BV. - 0301-2115 .- 1872-7654. ; 251, s. 114-118
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: Preeclampsia is a severe obstetric complication affecting 2–8% of pregnancies. There is a common belief that women with preeclampsia experience a shorter duration of labor, where it is thought that increased inflammation that occurs with the disease facilitates labor. However, little evidence exists to support or refute this. Thus, we undertook a register-based cohort study investigating the association between hypertensive disorders of pregnancy and labor duration. Study design: This was a Swedish register-based cohort study of nulliparous women with spontaneous or induced onset of labor at >34 weeks of gestation with a singleton fetus in cephalic presentation. Information of duration of labor was retrieved from electronic birth records and compared between women with hypertensive disorders and normotensives pregnancies. Data was represented as mean adjusted difference in hours (adjusted for pre-gestational disorders, maternal characteristics and mode of delivery) and adjusted hazard ratios (aHR), with an event defined as vaginal birth and women with intrapartum caesarean section censored. An aHR >1 indicated shorter duration of labor. Results: Among 101,531 women, 5548 (5.5%) developed a hypertensive disorder of pregnancy. The overall mean duration of labor was 9.43 (SD 5.32) hours. Women with hypertensive disorders experienced a shorter duration of labor compared to normotensive women, with an adjusted mean difference of -0.68 h (95% CI −0.90, −0.47) for gestational hypertension and -1.53 h (95% CI −1.72, −1.35) for preeclampsia. This corresponded to an aHR of 1.05 (95% CI 1.01, 1.10) and 1.12 (95% CI 1.08, 1.17), respectively. However, when we confined the analysis to those who labored spontaneously, the presence of hypertensive disorders did not alter duration of labor (aHR 0.98, 95% CI 0.95,1.01). Only women who were induced and also had hypertensive disorders experienced a shorter duration of labor (aHR 1.07, 95% CI 1.04,1.09). Conclusions: Hypertensive disorders did not alter labor duration among women with spontaneous onset of labor, however an association was observed among women who were induced. © 2020 Elsevier B.V.
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15.
  • Hastie, Roxanne, et al. (författare)
  • Low-Dose Aspirin for Preventing Birth of a Small-For-Gestational Age Neonate in a Subsequent Pregnancy.
  • 2022
  • Ingår i: Obstetrics and gynecology. - : Ovid Technologies (Wolters Kluwer Health). - 1873-233X .- 0029-7844. ; 139:4, s. 529-535
  • Tidskriftsartikel (refereegranskat)abstract
    • To estimate whether low-dose aspirin use is associated with an altered risk of delivering a small-for-gestational age (SGA) neonate among women with a history of having an SGA neonate in a prior pregnancy.We performed a Swedish register-based cohort study including women in their second pregnancy who had a history of having an SGA neonate (birth weight less than the 10th percentile). The association between use of low-dose aspirin in subsequent pregnancy and birth of an SGA neonate or a severely SGA neonate (birth weight less than the third percentile) were estimated using inverse propensity-weighted estimation, accounting for potential confounders.Among 8,416 women who gave birth to an SGA neonate in their first pregnancy, 801 (9.5%) used low-dose aspirin during their second pregnancy. The incidence of SGA neonates was similar among women using low-dose aspirin (21.7%) and those who did not use aspirin (20.7%). Low-dose aspirin use in pregnancy was not associated with an altered risk of having an SGA neonate (adjusted relative risk [aRR] 0.86, 95% CI 0.67-1.10) or a severely SGA neonate (aRR 0.98, 95% CI 0.71-1.34). Given the strong association between preeclampsia and SGA, we performed subgroup analyses based on preeclampsia status. Among women who had an SGA neonate and co-existing preeclampsia in their first pregnancy, low-dose aspirin was not associated with an altered risk of having an SGA (aRR 0.83, 95% CI 0.63-1.10) or severely SGA (aRR 1.02, 95% CI 0.73-1.44) neonate. Additionally, no association was seen among women who developed preeclampsia in their second pregnancy.Among women with a history of having an SGA neonate, low-dose aspirin was not associated with a decreased risk of having an SGA or severely SGA neonate in subsequent pregnancy. These findings suggest that low-dose aspirin should not be used to prevent recurrent SGA.
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16.
  • Hastie, Roxanne, et al. (författare)
  • Predictive Value of the Signs and Symptoms Preceding Eclampsia : A Systematic Review
  • 2019
  • Ingår i: Obstetrics and Gynecology. - 0029-7844 .- 1873-233X. ; 134:4, s. 677-684
  • Forskningsöversikt (refereegranskat)abstract
    • OBJECTIVE: To estimate the predictive value of signs and symptoms that occur before onset of eclampsia among pregnant women.DATA SOURCES: Electronic databases, including MEDLINE, EMBASE, Cochrane, and ClinicalTrials.gov were searched from inception to 2018. Search terms included eclampsia, predict, likelihood ratio, predictive value, and risk.METHODS OF STUDY SELECTION: Abstracts and later full texts were selected for review if a diagnosis of eclampsia was made, a comparator arm included (women without a diagnosis of eclampsia), and predictors of imminent eclampsia reported. Of 2,791 retrieved records, 11 were selected. Significant heterogeneity existed between studies, with differing designs, settings, participants, and signs or symptoms. In total, 28 signs or symptoms were reported, with visual disturbances and epigastric pain most common (six studies), followed by headache (five studies), and any edema (four studies).TABULATION, INTEGRATION, AND RESULTS: Data on study characteristics and predictive value of signs or symptoms were extracted, and, where appropriate, bivariate mixed-effect meta-analysis was applied to raw data. None of the pooled estimates were able to accurately predict eclampsia nor rule out eclampsia in their absence, with moderate specificity (83-94%) and poor sensitivity (29-56%).CONCLUSION: There is a dearth of high-quality studies investigating the predictive value of imminent signs and symptoms of eclampsia. Owing to the small number of studies, heterogeneity, and inconsistent reporting, it is difficult to provide accurate estimates of the predictive value of prodromal symptoms of eclampsia. Of the most commonly reported symptoms-visual disturbances, epigastric pain, and headache-none were able to accurately predict, nor rule out, imminent eclampsia.
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17.
  • Hastie, Roxanne, et al. (författare)
  • Proton Pump Inhibitors and Preeclampsia Risk Among 157 720 Women : A Swedish Population Register-Based Cohort Study
  • 2019
  • Ingår i: Hypertension. - 0194-911X .- 1524-4563. ; 73:5, s. 1097-1103
  • Tidskriftsartikel (refereegranskat)abstract
    • Preeclampsia is a hypertensive disorder of pregnancy with a high rate of maternal and neonatal morbidity and mortality. The only definite treatment is delivery. Preclinical investigations have identified proton pump inhibitors (PPIs), which are commonly used to treat reflux during pregnancy, as a potential treatment for preeclampsia. The aim of this study was to determine the association between PPI use during pregnancy and preeclampsia risk in a population-based register cohort. Using the Swedish Pregnancy Register, we conducted a cohort study of nulliparous pregnant women delivering from January 2013 to July 2017. Associations between PPI use and preeclampsia were investigated using logistic regression analyses with risk estimates presented as crude and adjusted odds ratios (aOR) with 95% CI. Of 157 720 nulliparous pregnant women, 6051 (3.8%) reported PPI use during pregnancy. PPI use during any point of pregnancy was associated with an increased risk of overall preeclampsia (aOR of 1.17; 95% CI, 1.04-1.32) and preeclampsia at term (aOR of 1.20; 95% CI, 1.04-1.39). However, PPI use recorded after 28 gestational weeks was associated with a reduced risk of preterm (delivery <37 weeks) preeclampsia (aOR of 0.63; 95% CI, 0.41-0.96) and early (delivery <34 weeks) preeclampsia (aOR of 0.41; 95% CI, 0.20-0.82). These findings highlight the heterogeneity of this disease, with a potential role PPIs for preventing preterm preeclampsia when used in close proximity to disease onset. Targeting PPI use to women at greatest risk of preterm preeclampsia may help prevent this severe form of disease.
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18.
  • Hess Engström, Andrea, et al. (författare)
  • Internet-based Treatment for Vulvodynia (EMBLA) – A Randomized Controlled Study
  • 2022
  • Ingår i: Journal of Sexual Medicine. - : Elsevier. - 1743-6095 .- 1743-6109. ; 19:2, s. 319-330
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Internet-based ACT (Acceptance and commitment therapy) treatment may improve accessibility and reduce stigma related to seeking health care, but there are a lack of studies investigating internet-based treatment using ACT principles for women with vulvodynia.Aim: The aim of this study was to investigate the effects of an internet-based treatment of pain during intercourse for women with provoked vulvodynia compared with no intervention during the waiting period before clinical treatment.Methods: A multicenter randomized controlled trial was conducted during 2016 to 2020, in which 99 participants were included. Participants were randomized to either a 6 week guided internet-based treatment using ACT principles or usual care. Data were collected at baseline, 6 weeks after baseline, and approximately 10 months after baseline.Outcomes: Pain-related (pain during intercourse, tampon test, impact of pain on sexual function) and pain behavior-related outcomes (attempts at intercourse, sexual activities besides intercourse, willingness to perform the tampon test, chronic pain acceptance questionnaire) were used as outcomes.Results: Treatment was efficacious in what concerns pain during intercourse and pain acceptance. Less pain during intercourse among women in the intervention group was observed at both post-treatment (primary endpoint, P = .01, Cohen's d = 1.4, 95% CI = 0.33, 2.4), and follow-up (P = .04). Absolut mean difference between groups for pain during intercourse at post-treatment was -2.84, 95 % CI = -4.91, -0.78), and -1.58 at follow-up, 95 % CI = -3.17, 0.02), where the intervention group rated less pain than controls. No differences between groups over time were found for tampon test measures or impact of pain on sexual function. There was a significant difference between groups at all timepoints indicating fewer attempts at intercourse among participants in the intervention group. At post-treatment, women who underwent internet-based treatment reported higher pain acceptance and a rise in activity engagement compared with the control group.Clinical Implications: There is an indication that internet-based treatment could be incorporated into clinical practice as a complement to clinical treatment.Strengths & Limitations: Study strengths included using several forms of recruitment and an intervention built by different professions with long experience of treating patients with vulvodynia. High dropout rate was a limitation of this study.Conclusion: Internet-based treatment may have an impact on pain during intercourse and positive effects on pain acceptance. However, conclusions must be drawn with caution due to the small sample size. 
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19.
  • Hess Engström, Andrea, et al. (författare)
  • Internet-based treatment for vulvodynia (EMBLA)-Study protocol for a randomised controlled study
  • 2021
  • Ingår i: Internet Interventions. - : Elsevier. - 2214-7829. ; 25
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Vulvodynia is defined as vulvar pain for at least 3 months without a clear cause. To the best of our knowledge, there are no trials investigating the effects of internet treatment using CBT (Cognitive behavioural therapy) treatment with Acceptance and Commitment Therapy (ACT) components for women with vulvodynia. The aim of this study is to examine the effects of such a guided internet-based intervention on provoked vulvar pain during the waiting period before clinical treatment. Methods: We will randomise 52 patients to either guided internet-based intervention with CBT with (ACT) components or no intervention during the waiting period for treatment as usual. Online assessments are conducted at baseline, posttreatment, and at follow-up after 9 months. The primary outcome measure is provoked vulvar pain. Secondary outcomes are depression, anxiety, sexual function, and quality of life. Linear-mixed effect models will be used to assess the effect of the internet-based intervention on vulvar pain, pain acceptance, depression, anxiety, sexual function, and quality of life over time, by applying the intention-to-treat approach. Continuous data will be analysed with general linear models using intention-to-treat and also per protocol approaches to assess the effects of the intervention at different time points. Ordinal and binary data will be analysed with Mann Whitney's test, Fischer's exact test and multivariate logistic regression, respectively. Discussion: As a randomised controlled trial with short- and long-term follow-up points, the EMBLA study intends to provide a novel and better understanding regarding the treatment of vulvodynia and the role of internet-based treatment as a complement to standard care for women suffering from vulvodynia. The effects of vulvodynia on pain, sexual function, quality of life, depression, and anxiety are investigated. The study's results are expected to be of value in the planning of clinical care in the medical area. High dropout rates and technical difficulties associated with using the platform are common in similar studies. Trial registration number: NCT02809612
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20.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Abdominal adhesions in gynaecologic surgery after caesarean section : a longitudinal population-based register study.
  • 2018
  • Ingår i: British Journal of Obstetrics and Gynecology. - : Wiley. - 1470-0328 .- 1471-0528. ; 125:5, s. 597-603
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: The aim of the study was to evaluate the association between abdominal adhesions at the time of gynaecologic surgery and a history of caesarean delivery, and to investigate obstetric factors contributing to adhesion formation after caesarean section (CS).DESIGN: Longitudinal population-based register study.SETTING: Sweden.POPULATION: Women undergoing benign hysterectomy and/or adnexal surgery in Sweden, 2000-2014, with a previous delivery during 1973-2013 (n = 15 479).METHODS: Information about abdominal adhesions during gynaecological surgery, prior medical history, pregnancies and deliveries were retrieved from Swedish National Health and Quality registers.MAIN OUTCOME MEASURES: Adhesions.RESULTS: In women with previous CS, adhesions were present in 37%, compared with 10% of women with no previous CS [odds ratio (OR): 5.18, 95% confidence interval (CI): 4.70-5.71]. Adhesions increased with the number of caesarean sections: 32% after one CS; 42% after two CS and 59% after three or more CS (P < 0.001). Regardless of the number of CS, factors at CS such as age ≥35 years (aOR: 1.28, 95% CI: 1.05-1.55), body mass index (BMI) ≥30 [adjusted OR (aOR): 1.91, 95% CI: 1.49-2.45] and postpartum infection (aOR: 1.55, 95% CI: 1.05-2.30) increased the risk of adhesions.CONCLUSIONS: Presence of adhesions in abdominal gynaecological surgery is associated with women's personal history of caesarean delivery. The number of caesarean sections was the important predictor of adhesions; advanced age, obesity and postpartum infection further increased the incidence.TWEETABLE ABSTRACT: Repeat caesarean, age, obesity and infection increased the risk of pelvic adhesions after caesarean section.
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21.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Association of maternal attention deficit hyperactivity disorder and preterm birth : a cohort study.
  • 2020
  • Ingår i: British Journal of Obstetrics and Gynecology. - : Wiley. - 1470-0328 .- 1471-0528. ; 127:12, s. 1480-1487
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Attention deficit hyperactivity disorder (ADHD) affects 3-7% of women of childbearing age. Whether ADHD is associated with an increased risk of preterm birth is unclear.DESIGN: National register-based cohort study.SETTING: Sweden.POPULATION: Nulliparous women giving birth to singleton infants 2007-2014 (n = 377 381).METHODS: Women were considered to have ADHD if they had been dispensed at least one prescription for ADHD medication, i.e. a central nervous system stimulant or non-stimulant drugs for ADHD, prior to, during or after pregnancy (2005-2014). Women with ADHD were compared with women without ADHD in regard to prevalence, severity and mode of onset of preterm birth. Logistic regression models were used, estimating adjusted odds ratios (aOR) with 95% confidence intervals (CI). Adjustments were made for maternal age and country of birth (model 1), and in addition for body mass index (BMI), education, alcohol or substance use disorders, and pre-gestational medical and psychiatric co-morbidity (model 2).MAIN OUTCOME MEASURES: Preterm birth (<37 weeks).RESULTS: During the study period, 6327 (1.7%) women gave birth and had ADHD according to our definition. These women had a higher rate of preterm birth compared with women without ADHD (7.3 versus 5.8%, aOR model 2: 1.17; 95% CI 1.05-1.30). ADHD was particularly associated with very (<32 weeks) preterm births, and associations were seen with both spontaneous and medically indicated onsets.CONCLUSIONS: Women with ADHD (i.e. who had been dispensed ADHD medication at any time in 2005-2014) had an increased risk of preterm birth.TWEETABLE ABSTRACT: Women with ADHD have a higher risk of preterm birth but most of it is due to modifiable risk factors.
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22.
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23.
  • Hesselman, Susanne, 1973- (författare)
  • Caesarean Section : Short- and long-term maternal complications
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Caesarean section is a common major surgical procedure and long-term complications have not been fully investigated. By longitudinal population based register studies, based on National health registers and medical data records, maternal complications after caesarean delivery at subsequent labour (N=7 683), among extremely preterm births (N=406), and at remote gynaecologic surgery (N=25 354) were explored.In Paper I, uterine closure was investigated in respect to uterine rupture in a subsequent delivery after caesarean section. Uterine rupture occurred in 1.3 % of women with a previous caesarean section. There was no increased risk of uterine rupture with single compared with double layers for closure of the uterus (adjusted Odds Ratio 1.17, 95 % CI 0.78-1.70). Modifiable risk factors of uterine rupture in a trial of labour after caesarean section included induction of labour and use of epidural analgesia.In Paper II, maternal outcomes and surgical aspects of caesarean section in the extremely preterm period were assessed. Maternal complications were more frequently reported in extremely preterm- compared with term caesarean delivery. No increase in short-term morbidity was observed at 22-24 compared with 25-27 gestational weeks, but uterine corporal incisions were performed more frequently (18.1 % vs. 9.6 %, p=0.02).Furthermore, risk factors for abdominal adhesions after caesarean section and organ injury in remote gynaecologic surgery were analysed (Paper III and IV). Numbers of prior caesarean sections were the most important factor for formation of adhesions. Advanced maternal age, obesity, infection and delivery year 1997-2013 were factors associated with adhesions in conjunction with caesarean section. Organ injury occurred in 2.2 % of women undergoing benign hysterectomy. A history of caesarean section increased the risk (adjusted Odds Ratio 1.74, 95 % CI 1.41-2.15), but was only partly explained by the presence of adhesions. The organ affected depended on medical history; prior caesarean predisposed for bladder injury, prior bowel/pelvic surgery for bowel injury and endometriosis was associated with ureter injury at time of hysterectomy. In conclusion; data from National health registers indicates that caesarean delivery is associated with long-term complications, although the absolute risk of severe complications for the woman is low.
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24.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Duration of labor among women with thromboembolic events: A Swedish register study
  • 2021
  • Ingår i: European Journal of Obstetrics and Gynecology and Reproductive Biology: X. - : Elsevier BV. - 2590-1613. ; 11
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Inflammation is central to initiation of labor and coagulation is closely interlinked with inflammation. Low-molecular-weight-heparin (LMWH) promotes inflammatory cervical remodeling, myometrium contractility and has been associated with shorter duration of labor. Material and methods: This was a cohort study of 136,661 deliveries 2013–2017, identified in the Swedish Pregnancy Register with prospectively collected pregnancy and labor characteristics. Information of duration of labor was retrieved from the electronic birth records and analyzed with Cox proportional hazard regressions according to previous or current thromboembolic disease (overall) with or without LMWH treatment with non-exposed as reference. Results: The crude hazard ratio for vaginal delivery was not different between women with thromboembolic disease and women without thromboembolic disease (HR 0.99, 95 % CI 0.91–1.09). A lower hazard ratio for vaginal delivery was observed among women with venous thromboembolism (VTE) with concomitant LMWH use/treatment (adjusted HR 0.86, 95 % CI 0.76−0.98) compared to non-exposed, implying a longer duration of labor in these cases. Conclusion: Thromboembolic disease was not associated with shorter duration of labor and in presence of LMWH these women experienced longer duration of labor. © 2021 The Authors
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25.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Effect of remote cesarean delivery on complications during hysterectomy : a cohort study
  • 2017
  • Ingår i: American Journal of Obstetrics and Gynecology. - : Elsevier BV. - 0002-9378 .- 1097-6868. ; 217:5, s. 564.e1-564.e8
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Cesarean section is frequently performed worldwide, and follow-up studies reporting complications at subsequent surgery are warranted.OBJECTIVES: The aim of the study was to investigate the association between a previous abdominal delivery and complications during a subsequent hysterectomy, and to estimate the fraction of complications driven by the presence of adhesions.STUDY DESIGN: This was a longitudinal population based register study of 25354 women undergoing a benign hysterectomy at 46 hospital units in Sweden 2000-2014.RESULTS: Adhesions were found in 45 % of the women with a history of cesarean delivery. Organ injury affected 2.2 %. The risk of organ injury (aOR 1.74, 95 % CI 1.41-2.15) and post-operative infection (aOR 1.26, 95 % CI 1.15-1.39) was increased with prior cesarean section, irrespective of whether adhesions were present or not. The direct effect on organ injury by a personal history of cesarean delivery was estimated to 73 %, and only 27 % was mediated by the presence of adhesions. Previous cesarean was a predictor of bladder injury (aOR 1.86, 95 % CI 1.40-2.47) and bowel injury (aOR 1.83, 95 % CI 1.10-3.03) but not ureter injury. A personal history of other abdominal surgeries was associated with bowel injury (aOR 2.27, 95 % CI 1.37-3.78), and the presence of endometriosis increased the risk of ureter injury (aOR 2.15, 95 % CI 1.34-3.44).CONCLUSIONS: Prior cesarean delivery is associated with an increased risk of complications during a subsequent hysterectomy, but the risk is only partly attributable to the presence of adhesions. Previous cesarean delivery and presence of endometriosis were major predisposing factors of organ injury at the time of the hysterectomy whereas background and perioperative characteristics were of minor importance.
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26.
  • Hesselman, Susanne, et al. (författare)
  • Maternal complications in settings where two-thirds of extremely preterm births are delivered by cesarean section
  • 2017
  • Ingår i: Journal of Perinatal Medicine. - : Walter de Gruyter GmbH. - 0300-5577 .- 1619-3997. ; 45:1, s. 121-127
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To investigate the maternal complications associated with cesarean section (CS) in the extremely preterm period according to the gestational week (GW) and to indication of delivery. Study design: This is a retrospective case-referent study with a review of medical records of women who delivered at 22-27 weeks of gestation (n = 647) at two level III units in Sweden. For abdominal delivery, gestational length was stratified into 22-24 (n = 105) and 25-27 (n = 301) weeks. For comparison, data on women who underwent a CS at term were identified in a register-based database. Results: The rate of CS in extremely preterm births was 62.8%. There was no difference in the complication rates, but types of incisions other than the low transverse incision were required more often at 22-24 (18.1%) weeks than at 25-27 GWs (9.6%) (P = 0.02). Major maternal complications occurred in 6.6% compared with 2.1% in the extremely preterm and term CS, respectively (P < 0.01). A maternal indication of extremely preterm CS increased the risk of complications. Conclusions: Almost two-thirds of the births at 22-27 GWs had an abdominal delivery. No increase in short-term morbidity was observed at 22-24 weeks compared to 25-27 weeks. CS performed extremely preterm had more major complications recorded than cesarean at term. The complications are driven by the underlying maternal condition.
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27.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Neighborhood deprivation and adverse perinatal outcomes in Sweden : A population-based register study
  • 2019
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : WILEY. - 0001-6349 .- 1600-0412. ; 98:8, s. 1004-1013
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Neighborhood deprivation has been associated with adverse perinatal outcomes but it is unclear to what extent maternal and social risk factors explain the association and how a stressful environment per se contributes.Material and methods: A population-based register study including 218 030 deliveries in Sweden between January 2013 and July 2017 was conducted. Exposure was living in a deprived or severely deprived area defined by the National Operations Department of the Swedish Police Authority. Adverse perinatal outcomes included preterm births, small-for-gestational-age births and stillbirths. A propensity score-based method was used to control for individual baseline characteristics. Associations were investigated with logistic regression analyses and risk estimates are presented as crude (OR) and adjusted odds ratio (aOR) with 95% confidence interval (CI).Results: Living in a deprived neighborhood in Sweden was associated with extremely preterm births (deprived area OR 1.50, 95% CI 1.07-2.11, severely deprived OR 1.90, 95% CI 1.40-2.58), small-for-gestational-age birth (deprived OR 1.45, 95% CI 1.31-1.60, severely deprived OR 1.85, 95% CI 1.69-2.03) and stillbirth (deprived OR 1.62, 95% CI 1.17-2.26, severely deprived OR 1.56, 95% CI 1.11-2.19). After accounting for individual maternal and social risk factors, the risk of small for gestational age in severely deprived areas remained (aOR 1.45, 95% CI, 1.19-1.75).Conclusions: The contextual effect of living in a deprived neighborhood on the risk of extremely preterm births, small-for-gestational-age births and stillbirths was to a high extent explained by individual factors of women residing in exposed areas, yet remained for small-for-gestational-age births in severely deprived areas after adjustment for maternal and social risk factors.
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28.
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29.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Risk of fistula formation and long-term health effects after a benign hysterectomy complicated by organ injury : A population-based register study
  • 2018
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 97:12, s. 1463-1470
  • Tidskriftsartikel (refereegranskat)abstract
    • INTRODUCTION: There is a paucity of data on the impact of organ injury on long-term outcomes after a hysterectomy for benign indications. The aim of this study was to investigate fistula formation and patient-reported long-term health outcomes after organ injury at the time of a hysterectomy.MATERIAL AND METHODS: This was a population-based study of 22 538 women undergoing a hysterectomy between 2000 and 2014 in Sweden. Their medical history, characteristics of their surgery, and patient-reported outcomes were retrieved from Swedish national health and quality registers. Predictors for fistula formation were investigated with logistic regression and are presented as odds ratios with a 95% CI.RESULTS: Fistulas were reported in 7% of women with organ injuries, compared with 0.4% of those without organ injuries (adjusted odds ratio 15.29 [9.81-23.85]). Laparotomy and postoperative infection were associated with postoperative fistulas. Most of the women reported having better health 1 year after the hysterectomy, but 7% of those with organ injuries and 24% of those with fistulas reported deteriorated health, compared with 2% of women without injuries.CONCLUSION: Organ injury at the time of hysterectomy is associated with the development of fistulas involving the female genital tract and increases the proportion of women reporting deteriorated health 1 year after surgery.
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30.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • The risk of uterine rupture is not increased with single- compared with double-layer closure : a Swedish cohort study
  • 2015
  • Ingår i: British Journal of Obstetrics and Gynecology. - : Wiley. - 1470-0328 .- 1471-0528. ; 122:11, s. 1535-1541
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE:To compare single- with double-layer closure of the uterus for the risk of uterine rupture in women attempting vaginal birth after one prior caesarean delivery.DESIGN:Cohort study.SETTING:Sweden.POPULATION:From a total of 19 604 nulliparous women delivered by caesarean section in the years 2001-2007, 7683 women attempting vaginal birth in their second delivery were analysed.METHODS:Data from population-based registers were linked to hospital-based registers that held data from maternity and delivery records. Logistic regression was used to estimate the risk of uterine rupture after single- or double-layer closure of the uterus. Results are presented as odds ratios (ORs) with 95% confidence intervals (95% CIs).MAIN OUTCOME MEASURE:Uterine rupture.RESULTS:Uterine rupture during labour occurred in 103 (1.3%) women. There was no increased risk of uterine rupture when single- was compared with double-layer closure of the uterus (OR 1.17; 95% CI 0.78-1.76). Maternal factors associated with uterine rupture were: age ≥35 years and height ≤160 cm. Factors from the first delivery associated with uterine rupture in a subsequent delivery were: infection and giving birth to an infant large for gestational age. Risk factors from the second delivery were induction of labour, use of epidural analgesia, and a birthweight of ≥4500 g.CONCLUSIONS:There was no significant difference in the rate of uterine rupture when single-layer closure was compared with double -layer closure of the uterus.
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31.
  • Hesselman, Susanne, 1973-, et al. (författare)
  • Time matters—a Swedish cohort study of labor duration and risk of uterine rupture
  • 2021
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : John Wiley & Sons. - 0001-6349 .- 1600-0412. ; 100:10, s. 1902-1909
  • Tidskriftsartikel (refereegranskat)abstract
    • IntroductionUterine rupture is an obstetric emergency associated with maternal and neonatal morbidity. The main risk factor is a prior cesarean section, with rupture occurring in subsequent labor. The aim of this study was to assess the risk of uterine rupture by labor duration and labor management.Material and methodsThis is a Swedish register-based cohort study of women who underwent labor in 2013–2018 after a primary cesarean section (n = 20 046). Duration of labor was the main exposure, calculated from onset of regular labor contractions and birth; both timepoints were retrieved from electronic medical records for 12 583 labors, 63% of the study population. Uterine rupture was calculated as events per 1000 births at different timepoints during labor. Risk estimates for uterine rupture by labor duration, induction of labor, use of oxytocin and epidural analgesia were calculated using Poisson regression, adjusted for maternal and birth characteristics. Estimates were presented as adjusted rate ratios (ARR) with 95% confidence intervals (CI).ResultsThe prevalence of uterine rupture was 1.4% (282/20 046 deliveries). Labor duration was 9.88 hours (95% CI 8.93–10.83) for women with uterine rupture, 8.20 hours (95% CI 8.10–8.31) for women with vaginal delivery, and 10.71 hours (95% CI 10.46–10.97) for women with cesarean section without uterine rupture. Few women (1.0/1000) experienced uterine rupture during the first 3 hours of labor. Uterine rupture occurred in 15.6/1000 births with labor duration over 12 hours. The highest risk for uterine rupture per hour compared with vaginal delivery was observed at 6 hours (ARR 1.20, 95% CI 1.11–1.30). Induction of labor was associated with uterine rupture (ARR 1.54, 95% CI 1.19–1.99), with a particular high risk seen in those induced with prostaglandins and no risk observed with cervical catheter (ARR 1.19, 95% CI 0.83–1.71). Labor augmentation with oxytocin (ARR 1.60, 95% CI 1.25–2.05) and epidural analgesia (ARR 1.63, 95% CI 1.27–2.10) were also associated with uterine rupture.ConclusionsLabor duration is an independent factor for uterine rupture among women attempting vaginal delivery after cesarean section. Medical induction and augmentation of labor increase the risk, regardless of maternal and birth characteristics.
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32.
  • Hogmark, Sara, et al. (författare)
  • Provision of long-acting reversible contraception at surgical abortion-A cross-sectional nationwide register study
  • 2022
  • Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 101:1, s. 77-83
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Provision of long-acting reversible contraception (LARC) at surgical abortion is safe, practical, and leads to higher user rates than does delayed provision. The aim of this study was to explore whether provision of LARC at surgical abortion is associated with known risk factors for subsequent abortions and inconsistent use of contraception, including sociodemographic factors and psychiatric disorders.Material and methods: This was a register-based cross-sectional study of 6251 women having a surgical abortion in Sweden. Data were collected from National health and population registers. Women with procedure codes for surgical abortion were identified in the National Patient Register from October 2016 to December 2018. Information from Statistics Sweden, the National Patient Register, and the Swedish prescribed drug register on sociodemographic factors, psychiatric disorders, and dispensed LARC was added and linked on an individual level. Associations of sociodemographic factors and psychiatric disorders with LARC provision were explored with generalized logit mixed models and presented as crude and adjusted odds ratios with 95% confidence intervals (CIs).Results: The overall rate of LARC provision at the time of the abortion was 2515/6251 (40.2%). Younger age and lower level of education were associated with an increased likelihood of LARC provision. In the study population, 2624/6251 (42.0%) patients had a pre- or post-abortion psychiatric disorder, a factor associated with an increased likelihood of LARC provision compared with women with no such disorders (adjusted odds ratio 1.21; 95% CI 1.08-1.34). The highest rates and odds were seen among women with personality, substance use, and/or neurodevelopmental disorders and among women with multiple psychiatric disorders.Conclusions: Sociodemographic risk factors and psychiatric disorders were associated with increased LARC provision at surgical abortion, indicating that women at high risk of unwanted pregnancies are provided with effective contraception. Still, less than half of all women undergoing surgical abortion were provided with LARC, suggesting that contraceptive access and counseling prior to a surgical abortion can be improved.
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33.
  • Kupka, Ellen, et al. (författare)
  • Low-dose aspirin use in pregnancy and the risk of preterm birth: a Swedish register-based cohort study.
  • 2023
  • Ingår i: American journal of obstetrics and gynecology. - : Elsevier BV. - 1097-6868 .- 0002-9378. ; 228:3
  • Tidskriftsartikel (refereegranskat)abstract
    • Preterm birth is the leading cause of neonatal mortality and morbidity. Women who have had a previous preterm birth are at increased risk for preterm birth in their subsequent pregnancies. Low-dose aspirin use reduces the risk for preterm birth among women at risk of developing preeclampsia, however, it is unclear whether low-dose aspirin may reduce the risk of recurrent preterm birth.This study aimed to investigate the association between low-dose aspirin use and preterm birth among women with a previous preterm birth.We conducted a Swedish register-based cohort study and included women who had a first and second pregnancy between 2006 and 2019, with the first pregnancy ending in preterm birth (medically indicated or with spontaneous onset <37 weeks of gestation). The association between low-dose aspirin use and preterm birth in the second pregnancy was estimated via logistic regression via standardization and expressed as marginal relative risks with the 95% confidence interval.Among the study cohort (N=22,127), 3057 women (14%) were prescribed low-dose aspirin during their second pregnancy and 3703 women (17%) gave birth prematurely. Low-dose aspirin use was associated with a reduced risk for preterm birth, (marginal relative risk, 0.87; 95% confidence interval, 0.77-0.99). There were no statistically significant associations between low-dose aspirin use and an altered risk for moderate preterm birth, defined as birth between 32 and 36 weeks' gestation (marginal relative risk, 0.90; 95% confidence interval, 0.78-1.03), or very preterm birth, defined as birth <32 weeks' gestation (marginal relative risk, 0.75; 95% confidence interval, 0.54-1.04). Regarding the onset of preterm birth, low-dose aspirin use was associated with a reduced risk for spontaneous preterm birth (marginal relative risk, 0.70; 95% confidence interval, 0.57-0.86) but no reduction in the risk for medically indicated preterm birth (marginal relative risk, 1.09; 95% confidence interval, 0.91-1.30) was observed.Among women with a previous preterm birth, low-dose aspirin use was associated with a reduced risk for preterm birth. When investigating preterm birth by onset in the second pregnancy, low-dose aspirin use was associated with a reduced risk for spontaneous preterm birth. Our results suggest that low-dose aspirin may be an effective prophylaxis for recurrent preterm birth.
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34.
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35.
  • Malm, Mari-Cristin, et al. (författare)
  • Episiotomy or not? : Midwives' experiences of recruiting to a randomized controlled trial during pregnancy and labor – A qualitative study
  • 2021
  • Ingår i: Sexual & Reproductive HealthCare. - : Elsevier. - 1877-5756 .- 1877-5764. ; 30
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: The performance of randomized controlled trials (RCTs) is dependent on recruitment. Recruiting women to RCTs regarding interventions during childbirth may be difficult due to time constraints and their vulnerable situation. Midwives play a major role in such recruitment. Few studies have investigated the views and experiences of recruiters. The aim of this study was to describe midwives' experiences of recruiting pregnant women regarding an RCT of lateral episiotomy or no episiotomy in vacuum-assisted delivery.Methods: In this qualitative study, 19 midwives were interviewed regarding their experiences. The midwives worked at antenatal health care centers or labor wards. The transcribed interviews were analyzed using content analysis.Results: Four categories appeared during the analysis, including "experiences and perceptions of providing trial information" and "the right timing in providing trial information," which varied among the midwives. Midwives' perceptions of how the women provided consent or declined participation, and the women's views and questions about the randomization and intervention, were summarized as "experiences of how the trial information was received by the women." In the final category, "perceived trial apprehensions and concerns," some midwives described ethical concerns related to the intervention and financial compensation to the staff involved.Conclusions: Midwives as recruiters would benefit from education and training in incorporating basic and advanced details of trial design and research methods, as well as training and support in recruitment. Awareness and management of the variation among potential recruiters is important when designing and performing an RCT.
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36.
  • Nevander, Sofia, 1979- (författare)
  • Hyperglycemia in pregnancy : diagnostics and duration of labor
  • 2023
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Objectives: The overall aim of this thesis was to evaluate the impact of maternal hyperglycemia in pregnancy on the duration of active labor, to evaluate indications for cesarean section and further, to examine cut-offs for gestational diabetes mellitus diagnosis based on capillary sampling.Material and methods: Study I was a cross-sectional study on diagnostic accuracy performed at an antenatal care clinic at the University Hospital in Linköping, Sweden. The study included 175 women undergoing an oral glucose tolerance test (OGTT) and aimed to compare capillary and venous sampling in the diagnosis of gestational diabetes mellitus (GDM) using Accu-Chek Inform II.Studies II and III were population-based, nationwide, Swedish register studies using data from the Swedish Pregnancy Register (SPR). In these, 247 524 primiparous women who delivered a singleton fetus, ≥34+0 (completed gestational weeks + additional days) with a cephalic presentation between 1 January 2014 and 30 May 2020 and had their data available in the SPR were included. Time in active labor was compared between women with GDM and women without diabetes (study II) and between women with type 1 diabetes and women without diabetes (study III) using Kaplan- Meier survival analysis and Cox regression analysis.In study III, we also evaluated indications for elective and emergency cesarean section (CS) in women with type 1 diabetes and women without diabetes.Results: In study I, the cut-offs for a GDM diagnosis using capillary samples were corrected from 5.1 to 5.3 mmol/L for the fasting sample, from 10.0 to 11.1 mmol/L for the 1 h sample and from 8.5 to 9.4 mmol/L for the 2 h sample using half of the dataset. Applying these cut-offs to the remaining dataset resulted in a sensitivity, specificity and accuracy of 85.0%, 95.0% and 90.3% respectively, with a positive predictive value (PPV) of 83%, a negative predictive value (NPV) of 96% and a positive likelihood ratio (LHR) of 16.4 using capillary sampling for the GDM diagnosis at fasting and 2-h.In study II, women with GDM had a significantly longer time in active labor, both with a spontaneous onset and induction of labor compared to women without diabetes. Women with GDM also had a decreased chance of vaginal delivery at a certain time-point compared to women without diabetes, with an adjusted hazard ratio (aHR) of 0.92 (0.88- 0.96) and 0.83 (0.76-0.90) for those with spontaneous onset and induction of labor respectively. Women with GDM had an increased risk for time in active labor ≥12 h both in spontaneous labor onset (adjusted odds ratio (aOR) 1.14 (1.04-1.25)) and in induction of labor (aOR 1.55 (1.28-1.87)).Women with type 1 diabetes had a significantly longer time in active labor, both in spontaneous onset and induced labor compared to women without diabetes. They also had a decreased chance of vaginal delivery at a certain time-point compared to women without diabetes with an aHR of 0.65 (0.60-0.70). The total rate of CS was 34.6% in the group of women with type 1 diabetes and 9.5% in the group of women without diabetes (both elective and emergency CS). The most common indication for elective CS among women with type 1 diabetes was suspected macrosomia (50.4%) whereas the corresponding number was 8.7% among women without diabetes. For emergency CS, the most common indication was fetal distress in women with type 1 diabetes (31.9%) and the corresponding number in women without diabetes was 35.9%.Conclusions: Regarding the diagnosis of GDM, we propose that capillary fasting and 2-hour post-prandial glucose samples, analyzed using the Accu-Chek Inform II system, could be used for the diagnosis of GDM during pregnancy. This approach would involve the use of adjusted cut-off values and demonstrates an acceptable level of accuracy within an antenatal care setting. It is imperative to obtain duplicate samples in order to maintain adequate precision. Furthermore, it is advisable to continue with the OGTT when the fasting samples fall within the normal range, as this leads to a greater number of women receiving a GDM diagnosis.Regarding time in active labor, both women with GDM and type 1 diabetes seemed to spend a longer time in active labor and were less likely to have a vaginal delivery at any given time compared to their non-diabetic counterparts. In order to customize and individualize intrapartum care, it is imperative to conduct further investigations that illustrate the influence of hyperglycemia in pregnancy on the duration of active labor and on the outcomes during childbirth. In subsequent studies, it will be determined whether the observed difference in the duration of active labor, as indicated in the current studies, remains consistent when employing new definitions of active labor and labor progression.Suspected fetal macrosomia is the main reason for elective CS among women with type I diabetes and needs to be addressed further.
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37.
  • Skalkidou, Alkistis, 1977-, et al. (författare)
  • SSRI use during pregnancy and risk for postpartum haemorrhage : a national register-based cohort study in Sweden
  • 2020
  • Ingår i: British Journal of Obstetrics and Gynecology. - : John Wiley & Sons. - 1470-0328 .- 1471-0528. ; 127:11, s. 1366-1373
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: Evaluate whether selective serotonin reuptake inhibitor (SSRI) use during pregnancy, as well as prior or current untreated psychiatric illness is associated with postpartum haemorrhage (PPH).DESIGN: National register-based cohort study based on data from the Swedish Pregnancy Register.SETTING: Sweden, nationwide coverage.POPULATION: A total of 31 159 pregnant women with singleton deliveries after gestational week 22+0 between January 2013 and July 2017.METHODS: Pregnant women with self-reported SSRI use at any time point during pregnancy were compared with non-SSRI-treated women with prior or current psychiatric illness, as well as wiith healthy women with no psychiatric illness or reporting SSRI use.MAIN OUTCOME MEASURES: Postpartum haemorrhage defined as blood loss >1000 ml during the first 2 hours postpartum reported by the delivering midwife or obstetrician.RESULTS: Postpartum haemorrhage prevalence was 7.0% among healthy women, 7.6% among women with prior or current psychiatric illness and 9.1% among women treated with SSRI. The unadjusted odds for PPH among women with prior or current psychiatric illness and women on SSRI treatment were increased by 9 and 34%, respectively, compared with healthy unmedicated women without a history of psychiatric illness (odds ratio [OR] 1.09, 95% CI 1.04-1.14 and OR 1.34, 95% CI 1.24-1.44, respectively). The estimates remained unchanged after adjustment for several confounders (such as maternal age, body mass index [BMI], parity, prior caesarean section, smoking, occupation and country of birth) and potential covariates (such as delivery mode, polyhydramnion, preterm delivery, labour dystocia and infant birthweight >4000 g).CONCLUSIONS: Higher risk for PPH was observed both among women treated with SSRI during pregnancy and among women with prior or current psychiatric illness.TWEETABLE ABSTRACT: SSRI use at any point during pregnancy and prior or current history of psychiatric illness was associated with an increased likelihood for PPH.
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38.
  • Skoglund, Charlotte, et al. (författare)
  • Association of Attention-Deficit/Hyperactivity Disorder With Teenage Birth Among Women and Girls in Sweden
  • 2019
  • Ingår i: JAMA Network Open. - : AMER MEDICAL ASSOC. - 2574-3805. ; 2:10
  • Tidskriftsartikel (refereegranskat)abstract
    • IMPORTANCE Attention-deficit/hyperactivity disorder (ADHD) is associated with a plethora of adverse health outcomes throughout life. While Swedish specialized youth clinics have carefully and successfully targeted risk of unplanned pregnancies in adolescents, important risk groups, such as women and girls with ADHD, might not be identified or appropriately assisted by these interventions. OBJECTIVES To determine whether women and girls with ADHD are associated with increased risk of teenage birth compared with their unaffected peers and to examine the association of ADHD with risk factors for adverse obstetric and perinatal outcomes, such as smoking, underweight or overweight, and substance use disorder. DESIGN, SETTING, AND PARTICIPANTS This nationwide cohort study included data from 6 national longitudinal population-based registries in Sweden. All nulliparous women and girls who gave birth in Sweden between January 1, 2007, and December 31, 2014, were included. Data analyses were conducted from October 7, 2018, to February 8, 2019. EXPOSURES Women and girls treated with stimulant or nonstimulant medication for ADHD (Anatomic Therapeutic Chemical classification code N06BA) in the Swedish Prescribed Drug Register between July 1, 2005, and December 31, 2014. MAIN OUTCOMES AND MEASURES Maternal age at birth. Secondary outcome measures were body mass index, smoking habits, and psychiatric comorbidities. RESULTS Among 384 103 nulliparous women and girls aged 12 to 50 years who gave birth between 2007 and 2014 included in the study, 6410 (1.7%) (mean [SD] age, 25.0 [5.5] years) were identified as having ADHD. The remaining 377 693 women and girls without ADHD (mean [SD] age, 28.5 [5.1] years) served as the control group. Teenage deliveries were more common among women and girls with ADHD than among women and girls without ADHD (15.3% vs 2.8%; odds ratio [OR], 6.23 [95% CI, 5.80-6.68]). Compared with women and girls without ADHD, those with ADHD were more likely to present with risk factors for adverse obstetric and perinatal outcomes, including smoking during the third trimester (OR, 6.88 [95% CI, 6.45-7.34]), body mass index less than 18.50 (OR, 1.29 [95% CI, 1.12-1.49]), body mass index more than 40.00 (OR, 2.01 [95% CI, 1.60-2.52]), and alcohol and substance use disorder (OR, 20.25 [95% CI, 18.74-21.88]). CONCLUSIONS AND RELEVANCE This study found that women and girls with ADHD were associated with an increased risk of giving birth as teenagers compared with their unaffected peers. The results suggest that standard of care for women and girls with ADHD should include active efforts to prevent teenage pregnancies.
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39.
  • Sturm, Amanda, et al. (författare)
  • Lungemboli under graviditet – en jämförelse av rutiner i två regioner : [Incidence and diagnosis of pulmonary embolism during pregnancy - A comparative study between two Swedish regions]
  • 2023
  • Ingår i: Läkartidningen. - : Läkartidningen Förlag AB. - 0023-7205 .- 1652-7518. ; 120
  • Tidskriftsartikel (refereegranskat)abstract
    • Pulmonary embolism during pregnancy is a potentially life-threatening condition and the second leading cause of maternal mortality in Sweden. Diagnosis during pregnancy is challenging, and radiologic diagnostic modality is important. The incidence of pulmonary embolism among pregnant women in the Swedish region of Dalarna was 47.8/100 000 women aged 15-49 years in 2016, compared with 5.4/100 000 women in the region of Värmland, which is a region comparable in size and population. This study aimed to investigate differences in clinical practice and choice of imaging modality among pregnant women with suspected pulmonary embolism in the two regions during 2013-2017. There was no difference in background maternal characteristics, but the primary modality of diagnostic imaging was lung scintigraphy in Dalarna (79 percent), whereas computed tomography pulmonary angiography was performed in 75 percent of the cases in Värmland (P < 0.01). There were more women with a confirmed diagnosis of pulmonary embolism after diagnostic imaging in Dalarna (25 percent, n = 65) compared to Värmland (5 percent, n = 8) (P < 0,.01). Pulmonary embolism was diagnosed in more than one quarter of women investigated with scintigraphy, compared to 6 percent when computed tomography was performed.
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40.
  • Törn, Anna E., et al. (författare)
  • Outcomes in children after mild neonatal hypoxic ischaemic encephalopathy : A population‐based cohort study
  • 2023
  • Ingår i: British Journal of Obstetrics and Gynecology. - : John Wiley & Sons. - 1470-0328 .- 1471-0528.
  • Tidskriftsartikel (refereegranskat)abstract
    • ObjectiveTo investigate whether mild neonatal hypoxic ischaemic encephalopathy (HIE) in term born infants is associated with cerebral palsy, epilepsy, mental retardation and death up to 6 years of age.DesignPopulation-based cohort study.SettingSweden, 2009–2015.PopulationLive term born infants without congenital malformations or chromosomal abnormalities (n = 505 075).MethodsBirth and health data were retrieved from Swedish national health and quality registers. Mild HIE was identified by diagnosis in either the Swedish Medical Birth Register or the Swedish Neonatal Quality Register. Cox proportional hazards regression was used to estimate hazard ratios (HRs) with 95% confidence intervals (CIs).Main outcome measuresA composite of the outcomes cerebral palsy, epilepsy, mental retardation and death up to 6 years of age.ResultsMedian follow-up time was 3.3 years after birth. Of 414 infants diagnosed with mild HIE, 17 were classified according to the composite outcome and incidence rates were 12.6 and 2.9 per 1000 child-years in infants with and without HIE respectively. Infants with mild HIE was four times as likely to be diagnosed with the composite outcome (HR 4.42, 95% CI 2.75–7.12) compared with infants without HIE. When analysed separately, associations were found with cerebral palsy (HR 21.50, 95% CI 9.59–48.19) and death (HR 19.10, 95% CI 7.90–46.21). HRs remained essentially unchanged after adjustment for covariates.ConclusionsMild neonatal HIE was associated with neurological morbidity and mortality in childhood. Challenges include identifying infants who may develop morbidity and how to prevent adverse outcomes.
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41.
  • Viirman, Frida (författare)
  • Mother, how are you? : Studies on self-rated health and childbirth experience
  • 2023
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Pregnancy and childbirth are characterised by emotional and physical changes, which can affect the mother’s mental health postpartum, as well as the infant. One step towards alleviating adverse consequences is to measure health status and childbirth experience. The aim of this thesis was to investigate women’s subjective health prior to pregnancy in relation to infant birth outcomes and childbirth experience, and to explore childbirth experience and its measurement from different perspectives.The thesis consists of four papers, of which the first two were based on data from the Swedish Pregnancy Register 2013­-2018. In Paper I, self-rated health (SRH) prior to pregnancy was explored in relation to adverse birth outcomes, while Paper II investigated risk factors for negative childbirth experience. In Paper III, 112 written descriptions of negative childbirth experience were qualitatively explored in relation to events during labour and birth. In Paper IV, a single-item question about overall childbirth experience was compared to the validated four-dimensional Childbirth Experience Questionnaire 2, completed by 2,953 women.Overall, the prevalence of poor SRH prior to pregnancy was 9.9%. Among primiparas, 8.5% reported poor SRH, and 8.4% negative childbirth experience. Poor SRH was independently associated with small for gestational age, preterm birth, and negative childbirth experience. It was also associated with stillbirth, but not after adjustment for other risk factors. The main contributing factors to negative childbirth experience were related to labour and birth, with operative birth modes being the most prominent. Poor SRH was the only pre-gestational factor independently associated with negative childbirth experience. Only small differences between type of negative childbirth experience, in terms of qualitative sub-themes, were found between birth modes and complications during labour. Fear-based emotions was the most common sub-theme. The single-item measurement of overall childbirth experience mainly captured experiences of perceived safety, to a lesser extent own capacity and participation, but not experiences related to professional support.In conclusion, findings show the potential of using SRH assessments clinically to identify women in need of more extensive attention during pregnancy and childbirth. This thesis provides further proof of negative childbirth experience being multidimensional and subjective, and dominated by fear. When using single-item ratings of childbirth experience clinically, one must be aware that experiences of support are not well represented.
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42.
  • Viirman, Frida, et al. (författare)
  • Negative childbirth experience in relation to mode of birth and events during labour: a mixed method study
  • 2023
  • Ingår i: European Journal of Obstetrics, Gynecology, and Reproductive Biology. - : Elsevier. - 0301-2115 .- 1872-7654. ; 282, s. 146-154
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To explore descriptions of negative childbirth experience in relation to mode of birth and events during labour.Design: A descriptive study using a convergent mixed methods design. Written responses to open-ended online questions regarding negative childbirth experience were explored using qualitative content analysis. Generated sub-themes were quantified, and stratified on mode of birth and events during labour.Participants and setting: 112 women with low ratings of overall childbirth experience, participating in a randomised controlled trial evaluating internet-based cognitive behavioural therapy in Sweden. Qualitative data were collected before randomisation, three months postpartum.Results: Four sub-themes emerged from the qualitative analysis: Experiencing fear-based emotions, Experiencing physical distress, Being affected by caregivers’ and partner’s behaviour and Being affected by bad facilities and poor organisation. Only small differences were found when stratifying sub-themes on mode of birth and events during labour. Regardless of mode of birth and events during labour, the childbirth experience was dominated by fear-based emotions.Key conclusions and implications for practice: Mixed-methods analyses demonstrate the challenges in understanding negative childbirth experience in relation to mode of birth and specific events during labour, with results clearly showing the multifaceted nature of this concept. The central role of fear in relation to negative childbirth experience should be considered when designing support during and after labour, to prevent adverse effects of the childbirth experience.
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43.
  • Viirman, Frida, et al. (författare)
  • Negative childbirth experience-what matters most? : a register-based study of risk factors in three time periods during pregnancy
  • 2022
  • Ingår i: Sexual & Reproductive HealthCare. - : Elsevier. - 1877-5756 .- 1877-5764. ; 34
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To explore the impact of risk factors representing three different time periods during pregnancy on negative childbirth experience.Methods: This was a register-based cohort study of 80 482 primiparas giving birth to singleton, term infants in Sweden 2013-2018, elective caesarean sections (CS) excluded. Hierarchical logistic regression was performed to calculate adjusted odds ratios (aOR) with 95% confidence intervals (CIs) in three blocks, each representing risk factors from one of three time periods: I) before pregnancy, II) pregnancy, III) childbirth.Results: Of the pre-gestational factors, only poor self-rated health (SRH) remained associated with negative childbirth experience after adjustment for pregnancy- and childbirth-related factors (aOR 1.20, 95% CI 1.08-1.34). Psychiatric care during pregnancy and fear of childbirth were both associated with negative birth experience (aOR 1.51, 95% CI 1.35-1.69; aOR 1.50, 95% CI 1.32-1.70), as were all childbirth-related factors included in the model. Women giving birth operatively vaginally or by unplanned CS under regional anaesthesia had three-fold higher ORs for rating their overall childbirth experience as negative (aOR 3.29, 95% CI 3.04-3.57; aOR 3.07, 95% CI 2.80-3.38). The highest OR, 5.44, was seen among women undergoing unplanned CS under general anaesthesia (95% CI 4.55-6.50).Conclusion: The main contributing factors to negative childbirth experience are related to labour and birth, but poor SRH prior to pregnancy, together with psychiatric care during pregnancy and fear of childbirth, place the woman in a vulnerable position, and require extra attention.
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44.
  • Viirman, Frida, et al. (författare)
  • Overall childbirth experience : what does it mean? A comparison between an overall childbirth experience rating and the Childbirth Experience Questionnaire 2
  • 2023
  • Ingår i: BMC Pregnancy and Childbirth. - : BioMed Central (BMC). - 1471-2393 .- 1471-2393. ; 23
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: In clinical settings and research studies, childbirth experience is often measured by the use of a single-item question about overall experience. Little is known about what women include in this rating, which complicates the design of adequate follow-up, as well as the interpretation of research findings based on ratings of overall childbirth experience. The aim of this study was to examine which known dimensions of childbirth experience women include in the rating on a single-item measure.Methods: Ratings of overall childbirth experience on a 10-point numeric rating scale (NRS) from 2953 women with spontaneous or induced onset of labour at two Swedish hospitals were evaluated against the validated Childbirth Experience Questionnaire 2 (CEQ2), completed on one of the first days postpartum. The CEQ2 measures four childbirth experience domains: own capacity, perceived safety, professional support and participation. Internal consistency for CEQ2 was evaluated by calculating Cronbach’s alpha. NRS ratings were explored in relation to CEQ2 using empirical cumulative distribution function graphs, where childbirth experience was defined as negative (NRS ratings 1–4), mixed (NRS ratings 5–6) or positive (NRS ratings 7–10). A multiple linear regression analysis, presented as beta coefficients (B) and 95% confidence intervals (CI), was also performed to explore the relationship between the four domains of the CEQ2 and overall childbirth experience.Results: The prevalence of negative childbirth experience was 6.3%. All CEQ2-subscales reached high or acceptable reliability (Cronbach’s alpha = 0.78; 0.81; 0.69 and 0.66, respectively). Regardless of overall childbirth experience, the majority of respondents scored high on the CEQ2 subscale representing professional support. Overall childbirth experience was mainly explained by perceived safety (B = 1.60, CI 1.48–1.73), followed by own capacity (B = 0.65, CI 0.53–0.77) and participation (B = 0.43, CI 0.29–0.56).Conclusions: In conclusion, overall childbirth experience rated by a single-item measurement appears to mainly capture experiences of perceived safety, and to a lesser extent own capacity and participation, but appears not to reflect professional support. CEQ2 shows good psychometric properties for use shortly after childbirth, and among women with induced onset of labour, which increases the usability of the instrument.
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45.
  • Viirman, Frida, et al. (författare)
  • Self‐rated health before pregnancy and adverse birth outcomes in Sweden : A population‐based register study
  • 2021
  • Ingår i: Birth. - : John Wiley & Sons. - 0730-7659 .- 1523-536X. ; 48:4, s. 541-549
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Poor self-rated health (SRH) at time of childbirth has been associated with adverse birth outcomes. However, it is not known whether prepregnancy SRH contributes to these outcomes or whether SRH is a proxy for some other factors. Therefore, the purpose of this study was to explore the associations between poor SRH before pregnancy and adverse birth outcomes. In addition, maternal characteristics associated with SRH before pregnancy were explored.Methods A population-based register study encompassing 261 731 deliveries in Sweden between January 2013 and July 2017 was conducted. The associations between poor SRH before pregnancy, rated at first antenatal visit, and the adverse birth outcomes of stillbirth, small for gestational age (SGA), and preterm birth were investigated with logistic regression analyses and presented as crude (OR) and adjusted odds ratios (aOR) with 95% confidence intervals (CI).Results Poor SRH before pregnancy was largely characterized by a history of psychiatric care and was associated with stillbirth (OR 1.37, 95% CI 1.04-1.79), SGA birth (OR 1.29, 95% CI 1.19-1.39), and preterm birth (OR 1.41, 95% CI 1.32-1.50). Adjusting for established risk factors for adverse birth outcomes, poor SRH remained associated with SGA birth (aOR 1.16, 95% CI 1.07-1.26) and preterm birth (aOR 1.25, 95% CI 1.17-1.33), but not with stillbirth (aOR 1.08, 95% CI 0.81-1.43).Conclusions SRH assessments could be used in early pregnancy to identify women in need of more extensive follow-up, as SRH appears to capture something beyond currently known risk factors for adverse birth outcomes.
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