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A case-control study of unexplained antepartum stillbirths
L M Alessandri1, F J Stanley, J B Garner
1Western Australian Research Institute for Child Health, Perth.
British Journal of Obstetrics and Gynaecology
|September 1, 1992
Summary
Identifying unexplained antepartum stillbirth risk factors is crucial. This study found polyhydramnios and cord issues were associated with stillbirth, highlighting areas for improved obstetric care and fetal risk assessment.
Area of Science:
- Obstetrics and Gynecology
- Perinatal Medicine
- Reproductive Health
Background:
- Unexplained antepartum stillbirth remains a significant concern in perinatal medicine.
- Identifying predictive factors for stillbirth is essential for improving fetal outcomes.
- Current diagnostic systems have limitations in identifying fetuses at risk.
Purpose of the Study:
- To identify factors associated with an increased risk of unexplained antepartum stillbirth.
- To investigate potential indicators for fetal risk assessment in pregnancies.
Main Methods:
- A matched case-control study design was employed.
- Cases were unexplained antepartum stillbirths (birthweight >= 1000g), matched with liveborn controls.
- Analyses were conducted on the whole group and dichotomized by birthweight (low vs. normal).
Main Results:
- Increased risk of stillbirth was associated with polyhydramnios (OR 10.83) and cord problems (OR 6.57).
- Other obstetric and medical complications were paradoxically less common in stillbirth cases.
- In normal birthweight infants, fetal distress was more frequent in cases (OR 3.65).
Conclusions:
- Existing clinical and diagnostic systems are insufficient for identifying fetuses at high risk of death.
- Reducing unexplained antepartum stillbirth rates requires novel discoveries in preventable causes or innovations in obstetric care.