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Background: Maternal obesity is a frequent obstetric risk factor, linked with short- and long-term consequences for mother and child, including foetal overgrowth, growth restriction and stillbirth. The mechanisms underlying these pathologies remain unknown but likely involve the placenta., Aims: To study placental cell turnover in relation to maternal body mass index (BMI)., Methods: Term placental villous tissue was randomly sampled from 24 pregnancies, with a range of maternal BMI of 19.5-49.6. Immunohistochemistry was performed for human chorionic gonadotropin, Ki67 and M30 and image analysis used to calculate syncytiotrophoblast area and proliferative and apoptotic indices. Results were compared categorically between women of BMI 18.5-24.9 (normal), BMI 30.0-39.9 (obese classes 1 and 2) and BMI 40+ (obese class 3) and continuously against BMI; p < 0.05 by the Kruskal-Wallis test or linear regression was considered statistically significant., Results: Increased maternal BMI was associated with categorical (normal versus obese class 3 and obese classes 1 and 2 versus obese class 3, both p < 0.05) and continuous (r(2) = 0.24, p = 0.016) reductions in the proliferative index and a continuous reduction (r(2) = 0.17, p = 0.047) in the apoptotic index., Discussion: Maternal obesity is associated with a dose-dependent reduction in placental villous proliferation and apoptosis which may increase susceptibility to adverse pregnancy outcomes.

Aim: Pregnancy after the death of a baby is associated with numerous, varied psychological challenges for pregnant women. This study aimed to explore women's experiences of pregnancy whilst attending a specialist antenatal service for pregnancies after a perinatal death.Methods: Semi-structured interviews with twenty women in a subsequent pregnancy after a perinatal death were conducted and analyzed taking an inductive thematic analysis approach.Results: All women expressed a heightened "awareness of risk". Two subthemes demonstrated how increased awareness of risk affected their experience and their desire regarding antenatal and postnatal support. Women talked about stillbirth being a "quiet, unspoken subject" causing them internal conflict as they had an awareness of pregnancy complications that other people did not. Navigating subsequent pregnancies relied on them "expecting the worst and hoping for the best" in terms of pregnancy outcomes. Women viewed specialist antenatal care in pregnancy after perinatal loss favorably, as it enabled them to receive tailored care that met their needs stemming from their increased awareness of and personal expectations of risk.Conclusion: Women's experiences can be used to develop models of care but further studies are required to determine to identify which components are most valued. [ABSTRACT FROM AUTHOR]

Abstract: Delayed childbearing is a growing trend in developed countries. Between 1982 and 2012, the number of live births to UK women over 40 more than quadrupled. This accelerating demographic shift is of major clinical and public health concern, because advanced maternal age has consistently been associated with adverse pregnancy outcomes. Current evidence suggests increased risk of miscarriage, ectopic pregnancy and stillbirth. Most studies also report elevated maternal morbidity resulting from hypertensive disorders and gestational diabetes. Many questions remain unanswered regarding the underlying mechanisms. The contribution of age per sé versus co-morbidities is unclear, as is the age threshold at which increased risks become significant. Despite the increased risks, there are potential psychological and social advantages to delaying childbirth and absolute numbers of complications are small. Further studies are required to develop effective strategies to reduce poor outcomes and provide optimal care for pregnant women of advanced age. [Copyright &y& Elsevier]

Background: Recent decades have witnessed an increase in mean maternal age at childbirth in most high-resourced countries. Advanced maternal age has been associated with several adverse maternal and perinatal outcomes. Although there are many studies on this topic, data from large contemporary population-based cohorts that controls for demographic variables known to influence perinatal outcomes is limited. Methods: We performed a population-based cohort study using data on all singleton births in 2004–2008 from the North Western Perinatal Survey based at The University of Manchester, UK. We compared pregnancy outcomes in women aged 30–34, 35–39 and ≥40 years with women aged 20–29 years using log-linear binomial regression. Models were adjusted for parity, ethnicity, social deprivation score and body mass index. Results: The final study cohort consisted of 215,344 births; 122,307 mothers (54.19%) were aged 20–29 years, 62,371(27.63%) were aged 30–34 years, 33,966(15.05%) were aged 35–39 years and 7,066(3.13%) were aged ≥40 years. Women aged 40+ at delivery were at increased risk of stillbirth (RR = 1.83, [95% CI 1.37–2.43]), pre-term (RR = 1.25, [95% CI: 1.14–1.36]) and very pre-term birth (RR = 1.29, [95% CI:1.08–1.55]), Macrosomia (RR = 1.31, [95% CI: 1.12–1.54]), extremely large for gestational age (RR = 1.40, [95% CI: 1.25–1.58]) and Caesarean delivery (RR = 1.83, [95% CI: 1.77–1.90]). Conclusions: Advanced maternal age is associated with a range of adverse pregnancy outcomes. These risks are independent of parity and remain after adjusting for the ameliorating effects of higher socioeconomic status. The data from this large contemporary cohort will be of interest to healthcare providers and women and will facilitate evidence based counselling of older expectant mothers. [ABSTRACT FROM AUTHOR]

Abstract: Delayed childbearing is a growing trend in developed countries. Between 1989 and 2009, the number of live births to UK women over 40 almost trebled. This accelerating demographic shift is of major clinical and public health concern, because advanced maternal age has consistently been associated with adverse pregnancy outcomes. Current evidence suggests a strong association with increased risk of miscarriage, ectopic pregnancy and stillbirth. Most studies also report elevated maternal morbidity resulting from hypertensive disorders and gestational diabetes. Many questions remain unanswered regarding the underlying mechanisms. The contribution of age per sé versus co-morbidities is unclear, as is the age threshold at which increased risks become significant. Despite the increased risks, there are potential psychological and social advantages to delaying childbirth and absolute numbers of complications are small. Further studies are required to develop effective strategies to reduce poor outcomes and provide optimal care for pregnant women of advanced age. [Copyright &y& Elsevier]