Lorthe, Elsa, Ancel, Pierre-Yves, Torchin, Héloïse, Kaminski, Monique, Langer, Bruno, Subtil, Damien, Sentilhes, Loïc, Arnaud, Catherine, Carbonne, Bruno, Debillon, Thierry, Delorme, Pierre, D'Ercole, Claude, Dreyfus, Michel, Lebeaux, Cécile, Galimard, Jacques-Emmanuel, Vayssiere, Christophe, Winer, Norbert, L'Helias, Laurence Foix, Goffinet, François, and Kayem, Gilles
Objective: To assess the impact of latency duration on survival, survival without severe morbidity, and early-onset sepsis in infants born after preterm premature rupture of membranes (PPROM) at 24-32 weeks' gestation.Study Design: This study was based on the prospective national population-based Etude Épidémiologique sur les Petits Ȃges Gestationnels 2 cohort of preterm births and included 702 singletons delivered in France after PPROM at 24-32 weeks' gestation. Latency duration was defined as the time from spontaneous rupture of membranes to delivery, divided into 4 periods (12 hours to 2 days [reference], 3-7 days, 8-14 days, and >14 days). Multivariable logistic regression was used to assess the relationship between latency duration and survival, survival without severe morbidity at discharge, or early-onset sepsis.Results: Latency duration ranged from 12 hours to 2 days (18%), 3-7 days (38%), 8-14 days (24%), and >14 days (20%). Rates of survival, survival without severe morbidity, and early-onset sepsis were 93.5% (95% CI 91.8-94.8), 85.4% (82.4-87.9), and 3.4% (2.0-5.7), respectively. A crude association found between prolonged latency duration and improved survival disappeared on adjusting for gestational age at birth (aOR 1.0 [reference], 1.6 [95% CI 0.8-3.2], 1.2 [0.5-2.9], and 1.0 [0.3-3.2] for latency durations from 12 hours to 2 days, 3-7 days, 8-14 days, and >14 days, respectively). Prolonged latency duration was not associated with survival without severe morbidity or early-onset sepsis.Conclusion: For a given gestational age at birth, prolonged latency duration after PPROM does not worsen neonatal prognosis. [ABSTRACT FROM AUTHOR]