A population-based study of effect of multiple birth on infant mortality in Nigeria

<p>Abstract</p> <p>Background</p> <p>Multi-foetal pregnancies and multiple births including twins and higher order multiples births such as triplets and quadruplets are high-risk pregnancy and birth. These high-risk groups contribute to the higher rate of childhood mortality especially during early period of life.</p> <p>Methods</p> <p>We examined the relationship between multiple births and infant mortality using univariable and multivariable survival regression procedure with Weibull hazard function, controlling for child's sex, birth order, prenatal care, delivery assistance; mother's age at child birth, nutritional status, education level; household living conditions and several other risk factors.</p> <p>Results</p> <p>Children born multiple births were more than twice as likely to die during infancy as infants born singleton (hazard ratio = 2.19; 95% confidence interval: 1.50, 3.19) holding other factors constant. Maternal education and household asset index were associated with lower risk of infant mortality.</p> <p>Conclusion</p> <p>Multiple births are strongly negatively associated with infant survival in Nigeria independent of other risk factors. Mother's education played a protective role against infant death. This evidence suggests that improving maternal education may be key to improving child survival in Nigeria. A well-educated mother has a better chance of satisfying important factors that can improve infant survival: the quality of infant feeding, general care, household sanitation, and adequate use of preventive and curative health services.</p

Myometrial norepinephrine in human pregnancy. Elevated levels in various disorders leading to cesarean section

Myometrial norepinephrine was measured consecutively with high-performance liquid chromatography in women who delivered by cesarean section. The previously recorded marked reduction in tissue norepinephrine at the end of normal pregnancy was confirmed. When cesarean section was performed because of abruptio placentae/hemorrhage, impending asphyxia, dystocia or preeclampsia, the norepinephrine concentrations were six to ten times higher than in normal pregnancy. When an emergency cesarean section was carried out for premature breech presentation, transverse position of the fetus or prolapse of the umbilical cord (following an otherwise-normal pregnancy), the reduced norepinephrine values were not significantly different from those measured in a control group of women who underwent elective cesarean section. It is possible that the abnormally elevated levels of myometrial norepinephrine are part of the primary pathophysiologic condition associated with sympathetic overactivity, resulting in disturbed myometrial circulation and/or motor activity

Ultrasound screening for fetal anomalies in Southern Sweden: a population-based study

Background. The accuracy of ultrasound in the diagnosis of congenital malformations has been the subject of many studies. Most of these are hospital-based studies over a limited period of years presenting high detection rates and also relatively high incidence of major malformations. We present here a large population-based study over a long period of years. Methods. The prenatal diagnoses are compared with the diagnoses of the newborns and aborted fetuses, including autopsy results. The detection rate of some common structural malformations is studied. Results. The overall detection rate of malformations in our study was 28.4%. We noticed an improved detection rate of heart defects and cleft lip during the study period. The prevalence of malformations in the population was 2.6%. The false positive diagnoses were few, 54 cases, and mainly of a mild nature. Conclusions. Ultrasound screening of fetal malformations in our population has a low false positive rate and even though the overall sensitivity is low, 28.4%, the detection rate for many common structural malformations is relatively good

Few women wish to be delivered by caesarean section

Objective: To investigate how many women wish to have a caesarean section when asked in early pregnancy, and to identify background variables associated with such a wish. Design: National survey. Setting: Swedish antenatal clinics. Population: 3283 Swedish-speaking women booked for antenatal care, at approximately 600 Swedish antenatal clinics, during three weeks spread over one year (1999-2000). Methods: A questionnaire was mailed shortly after the first antenatal visit. Main outcome measures: Women's preferences for mode of delivery. Results: 3061 women completed the first questionnaire, corresponding to 94% of those who consented to participate after exclusion of reported miscarriages. The background characteristics of the study sample were very similar to a one-year cohort of women giving birth in Sweden during 1999. The result showed that 8.2% of the women would prefer to have a caesarean section. A wish for caesarean section was associated with parity, age, civil status, residential area and obstetric history. Women preferring caesarean section were more depressed and worried, not only about giving birth, but also about other things in life. A multivariate logistic regression model showed three factors being statistically associated with a wish for caesarean section: a previous caesarean section, fear of giving birth and a previous negative birth experience. Conclusions: Relatively few women wish to have a caesarean section when asked in early pregnancy, and these women seem to be a vulnerable group