Association of placenta praevia and sex ratio at birth.
نویسندگان
چکیده
منابع مشابه
Placenta praevia and sex ratio at birth.
The ratio of male to female sex among infants born to 391 women with and 114 079 without placenta praevia was analysed by parity. In the women without placenta praevia the sex ratio decreased significantly with increasing parity, whereas in the women with placenta praevia it increased. Overall, the sex ratio was increased among the women with placenta praevia, particularly multiparas. An increa...
متن کاملMaternal and perinatal mortality, morbidity and risk factor evaluation in ante partum hemorrhage associated with Placenta Praevia
Abstract: Objective: To determine the maternal & perinatal morbidity and mortality associated with Placenta Praevia in Bangladesh. To assess the risk factors of antepartum hemorrhage associated with Placenta Praevia. Design: A cross sectional observational hospital based descriptive study. Setting: Obstetric inpatient units of two tertiary care teaching hospitals of Dhaka. Participants: One hun...
متن کاملObservations related to the aetiology of placenta praevia, with special reference to the influence of age and parity.
It is generally accepted that the frequency of placenta praevia is higher among multigravidae than among primigravidae. This observation has prompted the suggestion that low implantation of the ovum is a result of functional or structural changes in the uterus resulting from repeated pregnancies (Solomons and Canter, 1932; Davis and Campbell, 1946; Shaw, 1947; Findley, 1951). It is possible, ho...
متن کاملTrends and recurrence of placenta praevia: a population-based study.
We determined recent trends and recurrence rates of placenta praevia in 790,366 deliveries in NSW. From 2001 to 2009, the rate of placenta praevia increased by 26%, from 0. 69% to 0. 87% (trend P < 0.001). The placenta praevia recurrence rate in a second birth was 4.8%. Two-thirds of the increase in placenta praevia was accounted for by trends in known risk factors, and the unexplained portion ...
متن کاملRe: "Placenta previa: preponderance of male sex at birth".
To determine the relation between placenta previa and male sex at birth, the authors conducted two types of analysis: 1) a historical cohort analysis of singleton live births in New Jersey hospitals during 1989-1992 (N = 447,963); and 2) a meta-analysis of previously published studies on the subject. For the cohort analysis, subject mother-infant dyads were identified from linked birth certific...
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ورودعنوان ژورنال:
- British medical journal
دوره 294 6571 شماره
صفحات -
تاریخ انتشار 1987