| 1. |
- Bladh, Marie
(författare)
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Birth Characteristics’ Impacton Future Reproduction and Morbidity Among Twins an dSingletons
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Globally, in both developed and developing countries, the twinning rates have increased since the early 70’s. A large proportion of twins are born preterm and/or small-for-gestational-age (SGA) and/or with a low birth weight. Several studies have been performed on the long-term effect of these non-optimal birth characteristics on future reproductive performance and morbidity. Yet, most studies exclude twins or higher order pregnancies and thus the findings are based on singleton pregnancies only.The aim of the present thesis was therefore to investigate the impact of non-optimal birth characteristics in terms of preterm birth, small-for-gestational age, and low birth weight, on the reproductive pattern and morbidity among twins and singletons Furthermore, the present thesis attempted to establish whether twins and singletons were affected in the same manner.The studies included in this thesis are prospective population-based register studies, including all men and women, alive and living in Sweden at age 13, who were born between 1973 and 1983 (1,000,037 singletons and 16,561 twins) for the first three studies with follow-up till the end of 2006 and 2009. The last study included all men and women, alive and living in Sweden at age 13, who were born between 1973 and 1993 (2,051,479 singletons and 39,726 twins) with follow-up till the end of 2012.In general, twins were found less likely to reproduce between 13 and 33 years of age compared with singletons. Stratifying data by different birth characteristics, it was found that twins had a lower likelihood of reproducing on several different birth characteristics (appropriate-for-gestational-age, normal birth weight, low birth weight, term birth, preterm birth). However, twins born very preterm had an increased likelihood of reproducing compared with singletons born very preterm.Not taking birth characteristics into account, twinning was associated with a higher degree of hospitalization. However, accounting for the diverging birth characteristics this difference diminished and for some diagnoses the relationship was reversed such that twins were actually less likely to be hospitalized compared with singletons.In terms of the heritability of non-optimal birth characteristics singleton mothers born preterm were more predisposed to give birth to a child that was preterm while singleton mothers born SGA more often gave birth to a child either born preterm or SGA. Among twins this heritability was not as evident. The only difference observed was among twin mothers born SGA who were more likely to give birth to a child born SGA.In the extended cohort comprising those born between 1973 and 1993, male and female twins were found to be less likely to become parents compared with singletons. No difference was found among women in terms of having a second child, while male twins were more likely to have a second child compared with male singletons. It was also found that the likelihood of becoming a first-time parent and second-time parent was positively associated with the number of siblings.
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| 2. |
- Claesson, Ing-Marie, 1953-
(författare)
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Weight gain restriction for obese pregnant women : An Intervention study
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Introduction: Obesity is a growing global public health problem and is as prevalent among pregnant women as in the general population. It is well known that obese women have an increased risk for several complications during pregnancy and delivery and this is also true for the neonate. Excessive gestational weight gain among obese women seems to further increase these risks for adverse outcomes. It has not been known up to the time of this study whether a behavioral intervention program designed for obese pregnant women could result in a reduction of gestational weight gain.Aim: The overall aim of the present thesis was to study the effect of an intervention program designed to control weight gain among obese pregnant women during pregnancy and to then observe the outcomes of their pregnancies. In addition we wanted to learn if this behavioral intervention program could result in a weight gain of less than seven kilograms.Material and methods: The intervention group consisted of 155 obese (BMI >30 kg/m2) pregnant women at the antenatal care clinic (ANC) in Linköping; the control group consisted of 193 obese pregnant women in two other cities. The women in the intervention group were offered, in addition to regular care at the ANC, motivational interviewing in weekly visits to support them in making this behavioral change. They were also offered aqua aerobic class once or twice a week. The women in the control group attended the routine antenatal program in their respective ANCs. Outcome measures were: weight in kg, pregnancy-, delivery and neonatal outcomes, prevalence of anxiety- and depressive symptoms and attitudes and experiences of participating in an intervention program.Results: The women in the intervention group had a significantly lower gestational weight gain and also had a lower postnatal weight than the women in the control group. The percentage of women in the intervention group who gained <7 kg was greater than the percentage in the control group. There were no differences between the two groups in pregnancy-, delivery- and neonatal outcomes. In addition, there was no difference in prevalence of symptoms of anxiety and depressions between the intervention- and control group and the gestational weight gain did not have any effect on symptoms of depression or anxiety. The women in the intervention group with gestational weight gain <7 kg, weighed less at the two years follow-up than the women in the control group. Most of the women who participated in the intervention program expressed positive attitudes and were positive towards their experiences with the intervention program and their efforts to manage the gestational weight gain.Conclusion: The intervention program was effective in controlling weight gain during pregnan-cy and did not change the pregnancy, delivery or neonatal outcomes or the prevalence of anxie-ty- and depressive symptoms. The group with a gestational weight gain <7 kg showed the same distribution of complications as the group with a higher weight gain. The intervention program seems to influence the development of weight in a positive direction up to two years after childbirth. The women were also satisfied with their participation in the intervention program.
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| 3. |
- Grandahl, Maria
(författare)
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Prevention of Human Papillomavirus in a school-based setting
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The overall aim of this thesis was to examine beliefs about human papillomavirus (HPV) prevention, especially vaccination, among parents, immigrant women, adolescents and school nurses, and to promote primary prevention among adolescents.The methods used in the thesis were focus group interviews, individual interviews, a web-based questionnaire, and finally, a randomised controlled intervention study.The immigrant women were largely in favour of HPV prevention, although barriers, such as logistic difficulties, and cultural or gender norms were found. Parents’ decision concerning vaccination of their daughters depended on several factors. Regardless of their final choice, they made the decision they believed was in the best interest of their daughter. The benefits outweighed the risks for parents choosing to vaccinate while parents declining made the opposite judgement. The majority of the school nurses reported that the governmental financial support given because of the vaccination programme had not been used for the intended purpose. Three out of four nurses had been contacted by parents who raised questions regarding the vaccine; most were related to side effects. The educational intervention had favourable effects on the adolescents’ beliefs regarding HPV prevention, especially among those with an immigrant background. Furthermore, the intention to use condom as well as actual vaccination rates among girls was slightly increased by the intervention.Trust in the governmental recommendations and the amounts of information given are important factors in the complex decision about HPV vaccination. Attention given to specific needs and cultural norms, as well as the possibility to discuss HPV vaccination with the school nurse and provision of extra vaccination opportunities at a later time are all strategies that might facilitate participation in the school-based HPV vaccination programme. School nurses need sufficient resources, knowledge and time to meet parents’ questions and concerns. The vaccinations are time-consuming and the governmental financial support needs to be used as intended, for managing the vaccination programme. A school-based intervention can have favourable effects on the beliefs and actual actions of young people and may possibly thus, in the long term, decrease the risk for HPV-related cancer.
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| 4. |
- Kernell, Kristina
(författare)
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Cardiac disease in pregnancy and consequences for reproductive outcomes, comorbidity and survival
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- BackgroundAdvances in medical treatment during the last 50 years have resulted in more individuals with congenital heart disease (CHD) and Marfan syndrome reaching childbearing age. The substantial physiological changes during pregnancy result in a high-risk situation, and pregnancy is a major concern in women with these conditions.AimsTo describe the socio-demographic characteristics, birth characteristics and reproductive patterns of individuals with CHD and women with Marfan syndrome.To investigate obstetric and neonatal outcomes in the firstborn children of individuals with CHD and women with Marfan syndrome.To study long-term cardiovascular outcomes after childbirth in women with Marfan´syndrome.MethodsThe studies are population-based register studies. The study population in the first paper included all women born between 1973 and 1983 who were alive and resident in Sweden at the age of 13 (494 692 women, of whom 2 216 were women with CHD). In the second paper, the same definition of the study population was chosen, except that it involved all men born between 1973 and 1983 (522 216 men, of whom 2 689 men with CHD). The third and fourth papers involved a study population of all Swedish women born between 1973 and 1993 who were still living in Sweden at age 13. This population consisted of 1 017 538 women, 273 of whom had been diagnosed with Marfan syndrome.Results and conclusionsThe individuals studied were more often born preterm, and were small-for-gestational age babies. They were more likely to have been born by cesarean section. In women with CHD, these characteristics were repeated in their firstborn children. No increased risks were found in children of men with CHD or in children of women with Marfan syndrome. There was no increased risk of aortic dissection in women with Marfan syndrome during pregnancy compared to women with Marfan syndrome who did not give birth. Higher frequencies of cardiac arrhythmia and valvular heart disease were found after childbirth in women with Marfan syndrome. Pregnancy in women with CHD is a high-risk situation associated with increased risk of adverse neonatal outcomes for the expected child. Pregnancy in women without CHD, but where the father has CHD is not so associated with increased risk of adverse obstetric or neonatal outcomes. Pregnancy in women with Marfan syndrome is not associated with adverse outcomes for the expected child.
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| 5. |
- Lilliecreutz, Caroline
(författare)
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Blood-and Injection Phobia in Pregnancy : Epidemiological, Biological and Treatment aspects
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Introduction: Blood- and injection phobia is an anxiety disorder with a prevalence of approximately 3-5% in the general population. The etiology is often a combination of genetic factors and a conditioning experience. The symptoms of blood- and injection phobia are dizziness, confusion, nausea, epigastria discomfort, anxiety and sometimes panic attacks when receiving injections, seeing blood or having a blood sample taken. Unique for this specific phobia is the high probability of fainting when the phobic situation is encountered if there is no possibility to escape or to avoid the stimuli.During pregnancy and labor, women with blood- and injection phobia are exposed to most of their fears and they therefore find themselves in anxiety-ridden situations. Stress and anxiety during pregnancy is known to be risk factors for adverse obstetric and neonatal outcomes. Studies have shown an altered hypothalamic-adrenal-pituitary axis in women with stress or/and anxiety during pregnancy and increased cortisol concentrations can imply negative consequences for the unborn child. Cognitive behavioral therapy (CBT) is known to be effective in treating specific phobias such as blood- and injection phobia.Aim: The prevalence, obstetric and neonatal consequences, impact on the hypothalamic adrenal-pituitary axis and treatment aspects of blood- and injection phobia in a pregnant population have not been investigated before. The aims of this thesis were to study each of these phenomena.Material and methods: During 2005 a total of 1606 pregnant women were approached at their first visit in an antenatal care clinic in the southeast region in Sweden. They were asked to complete the “Injection Phobia Scale-Anxiety” questionnaire. All women who scored ≥ 20 on the “Injection Phobia Scale-Anxiety” questionnaire (N=347), were interviewed and either diagnosed for blood- and injection phobia or dismissed. In total, 110 women were diagnosed as having blood- and injection phobia. Among the women who scored <20 on the “Injection Phobia Scale-Anxiety” questionnaire, 220 women were randomly stratified for age and parity as a control group. The women in the study population answered questionnaires in gestational week 25, 36 and postpartum concerning symptoms of blood- and injection phobia, depression and anxiety. Samples of cortisol in the saliva were collected in the morning and evening in gestational week 25 and 36 in both groups of pregnant women. The medical records from the antenatal care visits, the delivery and postpartum check-up was used to collect data of importance. A treatment study was conducted using a two session cognitive behavioral therapy in a group of pregnant woman with blood- and injection phobia.Results: The prevalence of blood- and injection phobia is 7 % in a pregnant population. Pregnant women with blood- and injection phobia stated more often a fear of childbirth (p<0.001) and were more frequently delivered by elective cesarean section (p=0.032). The incidence of having a baby diagnosed with a complication (p=0.001) was also higher among these women. The women with blood- and injection phobia had increased cortisol concentrations in the saliva compared to the healthy controls (p=0.014). A two-session CBT in group for pregnant women with blood- and injection phobia reduced phobic (p<0.001) anxiety (p<0.001) and depressive (p<0.001) symptoms during pregnancy.Conclusions: Blood- and injection phobia during pregnancy is rather common. Pregnant women with blood- and injection phobia are more likely to be delivered by elective cesarean section and having a baby born with a complication compared to women not suffering from this specific phobia. Untreated blood- and injection phobia during pregnancy increases salivary cortisol concentrations indicating an altered hypothalamic-adrenal-pituitary axis during these weeks of pregnancy. To enhance psychological well being in pregnant women with blood- and injection phobia a two-session program providing CBT for groups of pregnant women is valuable and produces stable results for at least 3 months after delivery.
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| 6. |
- Skogsdal, Yvonne, 1964-
(författare)
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Preconception health in Sweden : The impact of lifestyle factors and the role of midwife's counselling
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Preconception health is an important topic since women and men have a possibility to change lifestyle habits preceding pregnancies, to increase the chances of a healthy pregnancy and child. The aim of this thesis was to increase knowledge about fertility and awareness of preconception health. Studies I and II were based on a randomised controlled trial among women who visited midwives for contraceptives counselling. Questionnaires were used before and after an intervention with the Reproductive Life plan (RLP), which is a discussion tool for preconception health. Study I showed that women do not always use a contraceptive that is suitable for their reproductive intentions and Study II indicated that women´s knowledge about fertility and awareness of preconception health increased with RLP-counselling (RLPC). Study II also showed that women appreciated the RLPC by the midwives.In studies III and IV, data from the Swedish Pregnancy Register were used. The main findings in Study III were that smoking, and use of snuff, in early pregnancy and risk consuming of alcohol the year preceding pregnancy were associated with spontaneous abortion (SA). Study IV showed that heavy alcohol consumption the year preceding pregnancy was associated with lower Apgar-score and might have been associated with lower birth weight. The studies contribute important new knowledge about lifestyle factors preceding pregnancy. It is important to highlight this new knowledge together with other factors about preconception health to midwives and other healthcare providers. Preconception counselling is also needed to increase women´s (and men´s) knowledge. There is still a lack of knowledge in the field, but it is a golden opportunity for midwives to start talking about reproductive health during contraception counselling.
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| 7. |
- Sylvén, Sara M, 1982-
(författare)
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Biological and Psychosocial Aspects of Postpartum Depression
- 2012
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Postpartum depression (PPD) is one of the most common complications of childbirth around the world. Despite several studies on the underlying mechanisms, the pathophysiology remains elusive. The aims of this thesis were to assess possible associations between the risk for self reported PPD and serum levels of leptin, the season of delivery, the gender of the newborn, and the history of premenstrual symptoms, respectively. A population based cohort of 2318 newly delivered women in Sweden were screened five days, six weeks and six months postpartum, using the Edinburgh Postnatal Depression Scale. This cohort comprised 60% of the total population, and the prevalence of self reported PPD was 11.1% six weeks after the delivery. A negative association between leptin levels at delivery and self reported PPD at six weeks and six months postpartum was evident, even after adjusting for confounding factors. An increased risk for self reported PPD was noted among women delivering during the last three months of the year, compared to those giving birth in April through June. This is of clinical importance, since women delivering at the end of the year could benefit from a closer follow-up after delivery. Despite previous varying findings – depending on study population and consequently different cultural settings – in our study, no association between infant gender and self reported PPD could be detected at six weeks or six months postpartum. However, women giving birth to baby boys had a higher risk for postpartum blues. Lastly, an increased risk for self reported PPD among women with a history of premenstrual symptoms was noted. Interestingly, after stratification for parity, the association between PPD and premenstrual symptoms remained only among multiparas. The association between PPD and premenstrual symptoms might shed light on the many possible routes by which hormonal changes may influence mood in women. In conclusion, this population based study strengthens the notion that PPD is a complex multifactorial disorder, with biological, social and psychological parameters shaping each individual’s risk. Further research is needed in this field, in order to investigate underlying pathophysiological mechanisms, propose more effective diagnostic tests and assess therapeutic interventions.
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