Abstract
Objective:
To assess the risk of neonatal mortality and morbidity in vertex–vertex second twins according to mode of delivery and birth weight.
Study design:
Data from a historical cohort study based on a twin registry in the US (1995–1997) were used. Multivariate logistic regression was used to control for maternal age, race, marital status, cigarette smoking during pregnancy, parity, medical complications, gestational age, and other confounders.
Results:
A total of 86 041 vertex–vertex second twins were classified into two groups: second twins delivered by cesarean section after cesarean delivery of first twin (C–C) (43.0%), second twins whose co-twins delivered vaginally (V–X) (57.0%). In infants of birth weight ⩾2500 g group, the risks of noncongenital anomaly-related death (adjusted odds ratio (aOR): 4.64, 95% confidence interval (95% CI): 1.90, 13.92), low Apgar score (aOR: 2.39, 95% CI: 1.43, 4.14), and ventilation use (aOR: 1.31, 95% CI: 1.18, 1.47) were higher in the V–X group compared with the C–C group. No asphyxia-related neonatal deaths occurred in C–C group, whereas the incidence of this death was 0.04% in the V–X group.
Conclusion:
The risks of neonatal mortality and morbidity are increased in vertex–vertex second twins with birth weight ⩾2500 g whose co-twins delivered vaginally compared with second twins delivered by cesarean section after cesarean delivery of first twin.
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Yang, Q., Wen, S., Chen, Y. et al. Neonatal mortality and morbidity in vertex–vertex second twins according to mode of delivery and birth weight. J Perinatol 26, 3–10 (2006). https://doi.org/10.1038/sj.jp.7211408
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DOI: https://doi.org/10.1038/sj.jp.7211408
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