COMPARATIVE STUDY
JOURNAL ARTICLE
META-ANALYSIS
RESEARCH SUPPORT, NON-U.S. GOV'T
REVIEW
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Mifepristone in combination with prostaglandins for termination of 10-16 weeks' gestation: a systematic review.

OBJECTIVES: Medical regimens using mifepristone in combination with prostaglandins have been widely available for women undergoing termination of pregnancy (TOP) at 10-16 weeks' gestation in China. We undertook a systematic review to compare different regimens of mifepristone with prostaglandins for TOP at 10-16 weeks' gestation.

METHODS: We searched multiple electronic databases for English and Chinese language reports (1990-2007) including MEDLINE, the Cochrane Library and the Chinese Biomedical Literature Database. Included were trials comparing mifepristone with prostaglandins (misoprostol, gemeprost or carboprost (PG05)) to each other for women at 10-16 weeks' gestation. Outcomes were successful abortion rates, induction-to-expulsion time, blood loss and side effects. Data were processed with RevMan 5 software.

RESULTS: Nineteen trials comparing mifepristone with prostaglandin (misoprostol and PG05) were found of which 14 contributed to meta-analyses (4206 women). The quality of reports was poor. The effectiveness of vaginal mifepristone/misoprostol was super than mifepristone/PG05 (RR 1.14, 95%CI 1.05-1.22) as was induction-to-expulsion time, blood loss and side effects. When comparing misoprostol/mifepristone 150mg to misoprostol/mifepristone 200mg, no difference in TOP success rates were found (RR 0.98, 95%CI 0.96-1.01). Misoprostol vaginally compared to orally significantly increased the TOP success rate (RR 1.12, 95%CI 1.01-1.24). Gastrointestinal symptoms and fever occurred more often in misoprostol oral group (RR 1.67, 95%CI 1.46-1.91).

CONCLUSIONS: Medical regimens of mifepristone/prostaglandins were effective and safe for TOP at 10-16 weeks' gestation. Misoprostol was super than PG05, and misoprostol vaginally was found to have better effectiveness than misoprostol orally. Further research should evaluate the relative effectiveness of medical methods compared to surgery.

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