Pregnancy outcome following preterm premature rupture of the membranes at less than 26 weeks' gestation.

The outcome of 71 singleton pregnancies where premature rupture of the membranes (PROM) occurred at gestations of less than 26 weeks was assessed retrospectively. The incidence of chorioamnionitis was 39.4% and the overall maternal morbidity rate was 53% but there were no long-term maternal sequelae. The latent period from PROM until delivery ranged from less than 12 hours to 77 days, with 41% of women delivering within 1 week. There was no increased risk of infection with increasing latent period. The perinatal mortality was 66.2% (26.7% stillbirths and 39.4% neonatal deaths). There was a 65% chance of a live baby if PROM occurred between 24-26 weeks but only 5 of 40 fetuses (12.5%) survived if PROM occurred before 24 weeks. The use of antibiotics, tocolytics and steroids in an uncontrolled manner is reported. Overall there is little serious risk to the mother if a conservative approach is adopted but only about one-third of such women will take home a live baby.