[Mifepristone 100 mg for early medical abortion]

To assess the clinical efficacy of mifepristone 100 mg followed two days later by misoprostol 400 microg orally in women undergoing medical termination of pregnancy up to 56 days gestational age.

Retrospective study over 8.5 months of 762 cases early medical abortion. 100 mg mifepristone was used on day 1 after clinic visit and vaginal ultrasonography. Misoprostol 400 microg was administered orally on day 3. Following administration of prostaglandin, women were observed in the ward for 4 hours. A control visit on day 15 was systematic. Success was defined as a complete uterine evacuation without the need for surgical intervention.

Medical terminations accounted for 42% of all abortions. 16% of women were pregnant for < 42 days, 76% for 43 to 49 days and 8% for 50 to 56 days. Termination occurred within 4 hours after administration of misoprostol in 80.2% of the women. Only one woman aborted within 48 hours of mifepristone administration only. The success rate in this study was 94.4% and the failure rate increased with the gestational age. Pain was the predominant side effect. Six cases of bleeding required a surgical intervention. No patient required transfusion. 96% of patients attended a control visit on day 15. The acceptability rate of the method has been 94%.

Mifepristone 100 mg followed two days later by misoprostol 400 microg orally is safe and effective for early termination of pregnancy.