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Abstract
Objective: To compare the perinatal outcome of triplet gestations with and without prophylactic cerclage.
Methods: A retrospective chart review of all triplet gestations delivered between January 1988 and June 1997 was performed. Only women initiating prenatal care before 15 weeks gestation were included. The cerclage group was compared to the no-cerclage group for maternal and perinatal outcome variables. Student t-test, Chi-square, and Fisher's exact test were used for analysis.
Results: Twenty of the 59 (33.8%) sets of triplet gestations had prophylactic cerclage. There were no differences between groups when compared for maternal age, parity, preterm labor rate, gestational diabetes, anemia, antenatal steroid use, histologic chorioamnionitis, and postoperative endometritis. In addition, there were no differences in mean birth weight, Apgar scores, respiratory distress syndrome (RDS), intraventricular hemorrhage/periventricular leucomalacia (IVH/PVL), and neonatal mortality. Although the mean gestational age at delivery for the cerclage group (32.8 ± 2.4 weeks) was not different from the no-cerclage group (31.5 ± 3.6 weeks), the proportion of pregnancies delivered at 31 weeks or more, and at 32 weeks or more, was significantly higher in the cerclage group (90 vs. 62%, P =. 02; 80 vs. 54%, P =. 05), respectively. In addition, the incidence of extremely low birth weight (LBW) was significantly decreased in the cerclage compared with the no-cerclage group (1.7 vs. 15.4%, P =. 005).
Conclusions: Prophylactic cerclage decreased significantly the incidence of extremely LBW neonates in triplet pregnancies. The proportion of neonates delivered at 31 weeks or more, and at 32 weeks or more was higher in the cerclage group.