| 1. |
- Austeng, Dordi, et al.
(författare)
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Incidence of and risk factors for neonatal morbidity after active perinatal care : extremely preterm infants study in Sweden (EXPRESS)
- 2010
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Ingår i: Acta Paediatrica. - : Wiley. - 0803-5253 .- 1651-2227. ; 99:7, s. 978-992
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Tidskriftsartikel (refereegranskat)abstract
- Aims: The aim of this study was to determine the incidence of neonatal morbidity in extremely preterm infants and to identify associated risk factors. Methods: Population based study of infants born before 27 gestational weeks and admitted for neonatal intensive care in Sweden during 2004-2007. Results: Of 638 admitted infants, 141 died. Among these, life support was withdrawn in 55 infants because of anticipation of poor long-term outcome. Of 497 surviving infants, 10% developed severe intraventricular haemorrhage (IVH), 5.7% cystic periventricular leucomalacia (cPVL), 41% septicaemia and 5.8% necrotizing enterocolitis (NEC); 61% had patent ductus arteriosus (PDA) and 34% developed retinopathy of prematurity (ROP) stage >= 3. Eighty-five per cent needed mechanical ventilation and 25% developed severe bronchopulmonary dysplasia (BPD). Forty-seven per cent survived to one year of age without any severe IVH, cPVL, severe ROP, severe BPD or NEC. Tocolysis increased and prolonged mechanical ventilation decreased the chances of survival without these morbidities. Maternal smoking and higher gestational duration were associated with lower risk of severe ROP, whereas PDA and poor growth increased this risk. Conclusion: Half of the infants surviving extremely preterm birth suffered from severe neonatal morbidities. Studies on how to reduce these morbidities and on the long-term health of survivors are warranted.
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| 2. |
- Granlund, Margareta, et al.
(författare)
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Antimicrobial resistance in colonizing group B Streptococci before the implementation of a Swedish intrapartum antibiotic prophylaxis program.
- 2010
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Ingår i: European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology. - : Springer Science and Business Media LLC. - 1435-4373 .- 0934-9723. ; 29:10, s. 1195-201
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Tidskriftsartikel (refereegranskat)abstract
- The prevalence of antibiotic resistance and their genetic determinants in colonizing group B streptococci (GBS) sampled in a Swedish nationwide survey was examined. In five GBS isolates (1.3%), kanamycin/amikacin resistance and the presence of the aphA-3 gene was identified. Three of these isolates carried the aad-6 gene and were streptomycin-resistant. Screening with kanamycin and streptomycin 1,000-μg disks enabled a rapid and easy detection of these isolates. In all, 312/396 (79%) GBS were tetracycline-resistant and 95% of the examined isolates harbored the tetM gene. Among the 22 (5.5%) GBS resistant to erythromycin and/or clindamycin, the ermB gene was detected in nine isolates (41%) and erm(A/TR) in ten isolates (45%). A high level of erythromycin and clindamycin resistance with minimum inhibitory concentrations (MICs) >256mg/L was found in four serotype V isolates that harbored ermB. The erythromycin/clindamycin resistance was distributed among all of the common serotypes Ia, Ib, II, III, IV, and V, but was not present in any of the 44 serotype III isolates associated to clonal complex 17. Screening for penicillin resistance with 1-μg oxacillin disks showed a homogenous population with a mean inhibition zone of 20mm. A change in the present oxacillin breakpoints for GBS is suggested.
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| 3. |
- Hagman, Anna, et al.
(författare)
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Women who gave birth to girls with Turner syndrome: maternal and neonatal characteristics.
- 2010
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Ingår i: Human reproduction (Oxford, England). - : Oxford University Press (OUP). - 1460-2350 .- 0268-1161. ; 25:6, s. 1553-60
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The aim was to identify maternal risk factors in women giving birth to girls with Turner syndrome (TS) and to describe the characteristics of newborns with TS. METHODS: The Swedish Genetic Turner Register was cross-linked with the Swedish Medical Birth Register. Between 1973 and 2005, 494 children with TS were born. Maternal age, parity, height, smoking habits and neonatal characteristics; mode of delivery, gestational age, size at birth and Apgar score, were compared with women in the general population who gave birth to girls during the same period. RESULTS: More women with advanced maternal age (40+) delivered girls with TS, 3.2% when compared with 1.8% in the general population [OR 1.83, 95% confidence interval (CI) 1.09-3.08, after adjustment for year of birth]. Maternal height was inversely associated with TS pregnancies (P = 0.005). Late preterm birth occurred in newborns with TS in 10.5% when compared with 4.8% in the general population (OR 2.23; 95% CI: 1.67-2.97, after adjustment for year of birth and maternal age). Newborns with TS had birthweight less than -2SD in 17.8% and birth length less than -2SD in 21.0% when compared with 3.5 and 3.4%, in the general population (OR 6.55; 95% CI: 5.12-8.38 and OR 8.69; 95% CI: 6.89-10.97, after adjustment for year of birth and maternal age). CONCLUSION: Advanced maternal age and short stature were risk factors for giving birth to a girl with TS. More TS girls were born late preterm and were smaller for gestational age than non-TS girls in the general population.
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| 4. |
- Holmström, Gerd E, et al.
(författare)
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Ophthalmologic Outcome at 30 Months Corrected Age of a Prospective Swedish Cohort of Children Born Before 27 Weeks of Gestation The Extremely Preterm Infants in Sweden Study
- 2014
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Ingår i: JAMA OPHTHALMOLOGY. - : American Medical Association (AMA). - 2168-6165 .- 2168-6173. ; 132:2, s. 182-189
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Tidskriftsartikel (refereegranskat)abstract
- IMPORTANCE Follow-up at 30 months corrected age reveals eye and visual problems in one-third of children born extremely prematurely (less than27 weeks gestation). OBJECTIVE To investigate the ophthalmologic outcome of extremely preterm children at 30 months corrected age. DESIGN, SETTING, AND PARTICIPANTS A prospective, population-based follow-up study (Extremely Preterm Infants in Sweden Study [EXPRESS]) was conducted in Sweden. The population included extremely preterm infants (less than27 weeks gestation) born in Sweden between 2004 and 2007, of whom 491 survived until age 2.5 years. Screening for retinopathy of prematurity (ROP) was performed in the neonatal period. At 30 months corrected age, an ophthalmologic assessment was performed in 411 of 491 children (83.7%). MAIN OUTCOMES AND MEASURES Visual acuity, manifest strabismus, and refractive errors were evaluated. RESULTS Visual impairment was identified in 3.1% of the children, and 1.0% were blind. Refractive errors, defined as myopia less than -3 diopters (D), hypermetropia greater than +3 D, astigmatism 2 D or more, and/or anisometropia 2 D or more, were found in 25.6% of the children, and 14.1% had manifest strabismus. There were significant associations between visual impairment and treated ROP (P = .02), cognitive disability (P less than .001), and birth weight (P = .02). Multiple regression analyses revealed significant associations between strabismus and treated ROP (P less than .001), cognitive disability (P less than .01), and cerebral palsy (P = .02). Refractive errors were significantly correlated with severity of ROP (right eye, P less than .001; left eye, P less than .01). Children who had been treated for ROP had the highest frequency (69.0%) of eye and visual abnormalities. CONCLUSIONS AND RELEVANCE One-third of the extremely prematurely born children in this study had some kind of eye or visual problems, such as visual impairment, strabismus, or major refractive error. Despite being born extremely preterm, the present cohort has a similar prevalence of blindness and visual impairment as in previous Swedish cohorts of children born less prematurely.
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| 5. |
- Håkansson, Stellan, et al.
(författare)
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Real-time PCR-assay in the delivery suite for determination of group B streptococcal colonization in a setting with risk-based antibiotic prophylaxis
- 2014
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Ingår i: Journal of Maternal-Fetal & Neonatal Medicine. - : Informa UK Limited. - 1476-7058 .- 1476-4954. ; 27:4, s. 328-332
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Intrapartum antibiotic prophylaxis (IAP) reduces the incidence of neonatal early onset group B streptococcal infections. The present study investigated if an automated PCR-assay, used bedside by the labor ward personnel was manageable and could decrease the use of IAP in a setting with a risk-based IAP strategy. Methods: The study comprises two phases. Phase 1 was a multicenter, randomized, controlled trial. Women with selected risk-factors were allocated either to PCR-IAP (prophylaxis given if positive or indeterminate) or IAP. A vaginal/rectal swab and superficial swabs from the neonate for conventional culture were also obtained. Phase 2 was non-randomized, assessing an improved version of the assay. Results: Phase 1 included 112 women in the PCR-IAP group and 117 in the IAP group. Excluding indeterminate results, the assay showed a sensitivity of 89% and a specificity of 90%. In 44 % of the PCR assays the result was indeterminate. The use of IAP was lower in the PCR group (53 versus 92%). Phase 2 included 94 women. The proportion of indeterminate results was reduced (15%). The GBS colonization rate was 31%. Conclusion: The PCR assay, in the hands of labor ward personnel, can be useful for selection of women to which IAP should be offered.
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| 6. |
- Langhoff-Roos, Jens, et al.
(författare)
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The Nordic medical birth registers - a potential goldmine for clinical research
- 2014
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Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 93:2, s. 132-137
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The Nordic medical birth registers have long been used for valuable clinical research. Their collection of data for more than four decades offers unusual possibilities for research across generations. At the same time, serum and blotting paper blood samples have been stored from most neonates. Two large cohorts (approximately 100000 births) in Denmark and Norway have been described by questionnaires, interviews and collection of biological samples (blood, urine and milk teeth), as well as a systematic prospective follow-up of the offspring. National patient registers provide information on preceding, underlying and present health problems of the parents and their offspring. Researchers may, with permission from the national authorities, obtain access to individualized or anonymized data from the registers and tissue-banks. These data allow for multivariate analyses but their usefulness depends on knowledge of the specific registers and biological sample banks and on proper validation of the registers.
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| 7. |
- Serenius, Fredrik, 1939-, et al.
(författare)
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Neurodevelopmental outcome in extremely preterm infants at 2.5 years after active perinatal care in Sweden.
- 2013
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Ingår i: Journal of the American Medical Association. - : American Medical Association (AMA). - 0098-7484 .- 1538-3598. ; 309:17, s. 1810-20
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Tidskriftsartikel (refereegranskat)abstract
- Importance Active perinatal care increases survival of extremely preterm infants; however, improved survival might be associated with increased disability among survivors. Objective To determine neurodevelopmental outcome in extremely preterm children at 2.5 years (corrected age). Design, Setting, and Participants Population-based prospective cohort of consecutive extremely preterm infants born before 27 weeks of gestation in Sweden between 2004 and 2007. Of 707 live-born infants, 491 (69%) survived to 2.5 years. Survivors were assessed and compared with singleton control infants who were born at term and matched by sex, ethnicity, and municipality. Assessments ended in February 2010 and comparison estimates were adjusted for demographic differences. Main Outcomes and Measures Cognitive, language, and motor development was assessed with Bayley Scales of Infant and Toddler Development (3rd edition; Bayley-III), which are standardized to mean (SD) scores of 100 (15). Clinical examination and parental questionnaires were used for diagnosis of cerebral palsy and visual and hearing impairments. Assessments were made by week of gestational age. Results At a median age of 30.5 months (corrected), 456 of 491 (94%) extremely preterm children were evaluated (41 by chart review only). For controls, 701 had information on health status and 366 had Bayley-III assessments. Mean (SD) composite Bayley-III scores (cognition, 94 [12.3]; language, 98 [16.5]; motor, 94 [15.9]) were lower than the corresponding mean scores for controls (cognition, 104 [10.6]; P < .001; adjusted difference in mean scores, 9.2 [99% CI, 6.9-11.5]; language, 109 [12.3]; P < .001; adjusted difference in mean scores, 9.3 [99% Cl, 6.4-12.3]; and motor, 107 [13.7]; P < .001; adjusted difference in mean scores, 12.6 [99% Cl, 9.5-15.6]). Cognitive disability was moderate in 5% of the extremely preterm group vs 0.3% in controls (P < .001) and it was severe in 6.3% of the extremely preterm group vs 0.3% in controls (P < .001). Language disability was moderate in 9.4% of the extremely preterm group vs 2.5% in controls (P < .001) and severe in 6.6% of the extremely preterm group vs 0% in controls (P < .001). Other comparisons between the extremely preterm group vs controls were for cerebral palsy (7.0% vs 0.1%; P < .001), for blindness (0.9% vs 0%; P = .02), and for hearing impairment (moderate and severe, 0.9% vs 0%; P = .02, respectively). Overall, 42% (99% CI, 36%-48%) of extremely preterm children had no disability, 31% (99% CI, 25%-36%) had mild disability, 16% (99% CI, 12%-21%) had moderate disability, and 11% (99% CI, 7.2%-15%) had severe disability. Moderate or severe overall disability decreased with gestational age at birth (22 weeks, 60%; 23 weeks, 51%; 24 weeks, 34%; 25 weeks, 27%; and 26 weeks, 17%; P for trend < .001). Conclusions and Relevance Of children born extremely preterm and receiving active perinatal care, 73% had mild or no disability and neurodevelopmental outcome improved with each week of gestational age. These results are relevant for clinicians counseling families facing extremely preterm birth. JAMA. 2013;309(17):1810-1820
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| 8. |
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| 9. |
- Anderberg, Eva, et al.
(författare)
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The impact of gestational diabetes mellitus on pregnancy outcome comparing different cut-off criteria for abnormal glucose tolerance.
- 2010
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Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 89:12, s. 1532-1537
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Objective. To examine pregnancy outcomes in relation to different categories of glucose tolerance during pregnancy. Design. Prospective observational cohort study. Setting. Patient recruitment and data collection were performed in four delivery departments in southern Sweden. Population. Women delivering during 2003-2005; 306 with gestational diabetes mellitus, 744 with gestational impaired glucose tolerance and 329 randomly selected controls. Methods. All women were offered a 75 g oral glucose tolerance test during pregnancy. On the basis of their capillary 2-hour plasma glucose concentrations, three groups were identified: gestational diabetes mellitus (>10.0 mmol/l), gestational impaired glucose tolerance (8.6-9.9 mmol/l) and controls (<8.6 mmol/l). Data for the groups were compared using a population-based database. Main outcome measures. Maternal and fetal outcomes. Results. For the gestational diabetes mellitus group, adjusted odds ratios (95% confidence intervals) for hypertensive disorders during pregnancy and induction of labor and emergency cesarean section were 2.7 (1.3-5.8), 3.1 (1.8-5.2) and 2.5 (1.5-4.4), respectively; and for Apgar score <7 at 5 minutes, need for neonatal intensive care >1 day and large-for-gestational age infant were 9.6 (1.2-78.0), 5.2 (2.8-9.6) and 2.5 (1.3-5.1), respectively. The increases in odds ratios for the gestational impaired glucose tolerance group were less pronounced but still significant for hypertension during pregnancy, induction of labor, large-for-gestational age infant and use of neonatal intensive care >1 day, with odds ratios (95% confidence interval) 2.0 (1.0-4.1), 1.8 (1.1-3.0), 2.1 (1.1-3.9) and 2.1 (1.1-3.8), respectively. Conclusions. These data indicate that even limited degrees of maternal hyperglycemia may affect the outcome of pregnancy.
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| 10. |
- Andolf, E., et al.
(författare)
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Caesarean section and risk for endometriosis: a prospective cohort study of Swedish registries
- 2013
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Ingår i: BJOG: An International Journal of Obstetrics & Gynaecology. - : Wiley. - 1471-0528 .- 1470-0328. ; 120:9, s. 1061-1065
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Tidskriftsartikel (refereegranskat)abstract
- Objective To investigate the association between caesarean section and later endometriosis. Design A prospective cohort study. Setting The Swedish Patient Register (PAR) and the Swedish Medical Birth Registry (MBR). Sample Women who were delivered in Sweden between 1986 and 2004. Methods Women with the diagnosis of endometriosis, defined as codes 617 (International Classification of Diseases, ninth revision, ICD-9) or N80 (ICD-10), were retrieved from the PAR. Obstetric outcome was assessed through linkage with the MBR. Out of 709090 women, 3110 were treated as inpatients with a first diagnosis of endometriosis after their first delivery. Women with a diagnosis of endometriosis before their first delivery were excluded. Cox analyses were performed to obtain hazard ratios for endometriosis and adjusted for maternal age at first delivery, body mass index, maternal smoking, and years of involuntary childlessness at study entry. Kaplan-Meier estimates were performed to calculate the risk according to time elapsed. Main outcome In-hospital diagnosis of endometriosis. Results The Cox analyses yielded a hazard ratio of 1.8 (95%CI 1.7-1.9) for endometriosis in women who had had a previous caesarean section compared with women with vaginal deliveries only. The risk of endometriosis increased over time: one additional case of endometriosis was found for every 325 women undergoing caesarean section within 10years. No increase in risk could be seen after two caesarean deliveries. The risk of caesarean scar endometrioma was 0.1%. Conclusion In addition to the recognised risk of scar endometrioma, we found an association between caesarean section and general pelvic endometriosis. Further studies are needed to confirm our findings.
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