A randomized clinical trial of mifepristone plus different routes of administration of misoprostol for terminating a pregnancy up to 37 days

<正>Objective:To explore the efficacy of 400μg of misoprostol administered sublingually on medical abortion for early pregnancy by comparing with routine administration of misoprostol. Methods;Women presenting for termination of early pregnancy,whose gestational ages were not more than 37 days,were randomly allocated into two groups.Women in group A were given 50 mg of mifepristone orally on the first day and 25 mg of mifepristone 8 to 12 hours later.The schedule on the second day was as the same as above followed by 400μg of misoprostol orally on the third day.Women in group B were given a dose of 150 mg of mifepristone orally followed by 400μg of misoprostol sublingually 36 to 48 hours later.Both completed abortion rates and side effects were evaluated. Results:The completed abortion rates were 93.4%in group A and 91.0%in group B,showing no significant difference（χ2 =2.3846,P>0.05）.About 80%of the women experienced nausea,vomit,dizziness,headache and breast tenderness.There were no significant differences in side effects of the two groups（P all>0.05）.The duration of vaginal bleeding in the two groups were（9.08 + 3.49） days and（9.04 + 3.43） days,showing no significant difference（t= 0.15,P>0.05）.About 97.3%of validated questionnaires on patient satisfaction were recovered.The proportions of patient satisfaction were 88.1%in group A and 92.0%in group B,showing no significant difference （P>0.05）. Conclusion:Administration of 150 mg mifepristone orally followed by 400μg of misoprostol sublingually could be more suitable for termination of early pregnancy due to its higher complete abortion rate and less side effects.