Management of premature rupture of membranes at term: randomized trial

Abstract

Objective: We hypothesize that expectant management in the presence of premature rupture of membranes at term would result in a lower cesarean birth rate with no increase in maternal, fetal, or neonatal infection.

Study design: Term patients who consented to the study were randomly allocated either to expectant management for 48 hours or to induction of labor 8 hours after premature rupture of membranes. Premature rupture of membranes was confirmed by sterile speculum examination of the vagina. Patients randomized to expectant management were transferred to antenatal care and were not examined vaginally until they went into labor. Patients randomized to induction of labor had induction with oxytocin 8 hours after premature rupture of membranes.

Results: Two hundred sixty-two patients were randomized to the expectant management and induction of labor groups. The cesarean birth rate and the clinical diagnosis of postpartum endometritis was not significantly different in the two groups. Pathologic diagnosis of chorioamnionitis and funisitis, however, was significantly greater in the expectant management group (p < 0.05). Eight of the 15 babies with funisitis were admitted to the neonatal intensive care unit for therapy (two in the induction of labor group and six in the expectant management group, p < 0.05).

Conclusion: Expectant management did not reduce the incidence of cesarean birth and increased the pathologic diagnosis of funisitis and newborn requirements for neonatal intensive care.