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Maternal Outcomes Among Periviable Births by Cesarean Delivery

JAMA Network Open 10.1001/jamanetworkopen.2026.34705

September 18, 2026 at 11:00 AM EDT

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In this cross-sectional study of periviable births, the proportion of periviable deliveries by cesarean increased over time. Compared with vaginal delivery, periviable cesarean delivery was associated with an increased risk for adverse maternal outcomes and severe maternal morbidity.

Corresponding Author: Alexander Friedman, MD, MPH, Division of Maternal-Fetal Fetal Medicine, Department of Obstetrics and Gynecology, Columbia University College of Physicians and Surgeons, 622 W 168th St, New York, NY 10032 (amf2104@cumc.columbia.edu).

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