笔者收集了近年来文献报道该药在妇产科的一些新应用 ,现综合介绍如下。1　紧急避孕将要求紧急避孕的妇女 1 31例随机分为对照组和治疗组。对照组服用左炔诺孕酮 0 .75ｍｇ,间隔 1 2ｈ再服 0 .75ｍｇ。治疗组一次服用米非司酮 2 5ｍｇ。避孕有效率以Ｄｉｘｏｎ预期妊娠概率计算 I collected in recent years the literature reported some new applications of the drug in obstetrics and gynecology, are summarized below. 1 Emergency contraception The women who requested emergency contraception were randomly divided into control group and treatment group. Control group levonorgestrel 0.75 mg, interval 1 2h and then serve 0.75mg. The treatment group took mifepristone 25mg once. Effectiveness of contraception is calculated as the probability of expected pregnancy by Dixon