Fetal and infant outcome of pregnancies with very early rupture of membranes.

Fetal and infant outcome was studied in 38 singleton pregnancies complicated by very early rupture of membranes (PROM), in gestational weeks 19-29, over a 4-year period, in a Swedish population. The pregnancies were managed according to a specified protocol, including postponement of delivery until 34 weeks of gestation if possible. Stillbirth occurred in 10 cases (26.3%), all with PROM before 26 completed weeks, while 6 other infants died in the neonatal period. Respiratory distress syndrome was evident in half (50.0%) of the 28 liveborn infants. The surviving 22 infants (57.9%) were followed up to 2 years of age. The rate of neurological sequelae at follow-up was 22.7% (5/22). The fetal outcome of the 20 pregnancies with rupture of membranes before 26 completed weeks was poor; only 7 infants of the 10 born alive survived the neonatal period. The short-term fetal outcome in the group with rupture of membranes in 26-29 completed weeks was better: 15 of the 18 infants survived, but 4 had neurological sequelae. PROM before 29 completed weeks of gestation is associated with severe short-term and long-term fetal complications, in cases where the pregnancy is prolonged for several weeks.