Abstract
Objective: Our purpose was to compare the efficacy, safety, and adverse effects of intra-amniotically administered (15S)-15-methyl-prostaglandin F 2α and intravaginally administered misoprostol for second-trimester uterine evacuation. Study Design: Fifty-one patients were randomly assigned to receive either a single 2.5-mg intra-amniotic injection of (15S)-15-methyl-prostaglandin F 2 α (n = 26) or two 200-μg intravaginal doses of misoprostol (n = 25) at 12-hour intervals. The primary outcome measured was evacuation of the uterus within 24 hours. Results: The mean time from initiation of termination to uterine evacuation was less in the prostaglandin group than in the misoprostol group (17.5 ± 8.6 hours vs 22.3 ± 12.5 hours), but this was not statistically significant ( P > .05). The rate of successful fetal evacuation at 24 hours was significantly higher in the prostaglandin group than in the misoprostol group (88% vs 60%, P = .02). The complete-abortion rate and the incidence of adverse effects were similar in both groups. Conclusion: The use of an intra-amniotic injection of (15S)-15-methyl-prostaglandin F 2α for midtrimester pregnancy termination is safe and is associated with a greater number of successful uterine evacuations within 24 hours, without an increase in adverse effects, than intravaginal administration of misoprostol. (Am J Obstet Gynecol 1999;181:1057-61.)
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