Neonatal outcomes in early term birth

Area of Science:

• Obstetrics and Gynecology
• Neonatal Medicine
• Perinatal Epidemiology

Background:

• Early term birth (37 0/7–38 6/7 weeks) represents a significant portion of deliveries.
• Understanding neonatal morbidity associated with early term birth is crucial for optimizing delivery timing.

Purpose of the Study:

• To compare neonatal morbidity rates between early term and full term births.
• To analyze these rates based on the precursor leading to delivery.

Main Methods:

• Retrospective study of 188,809 deliveries (37 0/7–41 6/7 weeks gestation).
• Delivery precursors categorized: spontaneous labor, indicated premature rupture of membranes, no recorded indication.
• Neonatal morbidities compared across gestational ages, excluding anomalies.

Main Results:

• Early term births (34.1%) exhibited higher neonatal intensive care unit admission and respiratory morbidity compared to deliveries at or beyond 39 weeks.
• Morbidity was lowest at 39 weeks or later for most precursors.
• Respiratory morbidity was significantly higher at 37 weeks compared to 39 weeks, irrespective of delivery route.

Conclusions:

• Findings support classifying 37 weeks as early term due to elevated neonatal morbidity.
• Further prospective research is needed to establish optimal delivery timing for pregnancy complications.