An outpatient regimen of combined oral mifepristone 400 mg and misoprostol 400 μg for first-trimester legal medical abortion

Abstract

Aim. To evaluate the success rate of medical abortion using an outpatient regimen of oral mifepristone 400 mg and oral misoprostol 400 μg for legal abortion in women < 56 days pregnant. Methods. Successful abortion was defined as an endometrial thickness < 20 mm evaluated by transvaginal ultrasound and minimal vaginal bleeding at a control examination performed 14 days after administration of misoprostol. Over a 6-month period in 2003, a questionnaire (completion rate 70%) was used for a spot check of the patients' evaluation of the method. Results. Six hundred and sixty women underwent the procedure over a 3-year period and 606 (92%) experienced successful medical abortion. The remaining 8% had vacuum aspiration performed mainly due to uterine retention (70%). Other reasons were vaginal bleeding (25%), vomiting (2%), or pelvic infection (4%). Most women reported no days with severe pain (67%), 0-1 days with moderate pain (82%), and 0-1 days with light pain (62%). In terms of gastrointestinal side effects, 68% reported nausea, 33% vomiting, and 27% diarrhea. Most women (90%) felt that the information given at the hospital prior to the abortion was sufficient, 74% would prefer medical abortion again in case of a future unwanted pregnancy, and 85% would prefer to abort at home again. Conclusion. A high acceptance and success rate was seen using this outpatient oral regimen of mifepristone and misoprostol. © Acta Obstet Gynecol Scand 2005.