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DOI: 10.1055/a-2414-1006
Neonatal Survival and Outcomes following Periviable Rupture of Membranes

Abstract
Objective
To clarify survival for infants affected by periviable prolonged preterm premature rupture of membranes (PPROM) in the military health system (MHS). To add to current literature on outcomes following expectant management, including long-term neurodevelopment outcomes.
Study Design
Retrospective matched cohort review of six level 3 military neonatal intensive care units (NICUs; 2010–2020). Cases were matched 1:1 with control infants, matched by location, gender, gestational age (within 1 week), birth weight (within 300 g), and rupture of membranes (ROM) within 24 hours of delivery. Follow-up data were obtained for each infant through 48 months' corrected age or age of last documented health visit in a military treatment facility.
Results
Forty-nine infants met inclusion criteria. Mean ROM for cohort infants was 20.7 weeks, with mean latency period of 34.6 days and mean gestational age at delivery of 25.7 weeks. Cohort infants had a mean birth weight of 919 g. Cohort survival to NICU discharge was 75.5 versus 77.6% of controls (p = 0.81). Statistically significant short-term outcomes: oligohydramnios or anhydramnios at delivery (p < 0.0001), pulmonary hypertension (p = 0.0003), and high-frequency ventilation (p = 0.004) were higher in cohort infants. No differences were found regarding rates of early sepsis, intraventricular hemorrhage, surgical necrotizing enterocolitis, oxygen at 36 weeks or at discharge. No statistical difference in long-term outcomes at 18 to 48 months of age or incidence of autism, cerebral palsy, attention deficit hyperactivity disorder, or asthma.
Conclusion
Cohort survival to discharge in the MHS was 75.5%, higher than previously reported and not different from matched controls. Infants born after periviable PPROM should deliver at centers with access to high-frequency ventilation and ability to manage pulmonary hypertension. There was no difference in long-term neurodevelopment between the groups.
Key Points
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Survival to NICU discharge is similar between infants exposed to periviable PPROM and controls.
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Cohort survival to discharge was 75.5%, higher than previously reported in recent literature.
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Infant with periviable PPROM should delivery at centers capable of managing pulmonary complications.
Note
The views expressed in this abstract reflect the results of research conducted by the author(s) and do not necessarily reflect the official policy or position of the Defense Health Agency, Brooke Army Medical Center, Department of Defense, nor the U.S. Government.
Publication History
Received: 31 May 2024
Accepted: 11 September 2024
Article published online:
15 October 2024
© 2024. Thieme. All rights reserved.
Thieme Medical Publishers, Inc.
333 Seventh Avenue, 18th Floor, New York, NY 10001, USA
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