孕妇由于特殊原因造成错过早期终止妊娠时机 ,而使妊娠超过 12周 ,过去对于孕 12～ 16周妊娠妇女 ,常采用雷夫奴尔羊膜腔注入法引产 ,72小时未能娩出者再采用钳夹术。由于钳夹术操作难度大 ,易引起术中、术后并发症 ,1999年我所改用米非司酮配伍米索前列醇对孕 12～ 16周妊娠妇 Pregnant women due to special reasons missed the timing of early termination of pregnancy, leaving the pregnancy for more than 12 weeks, the past for pregnant women of 12-16 weeks of pregnancy, often using Rehvoren amniotic injection method of induction of labor, 72 hours did not deliver those who use the clamp Surgery. Due to the difficulty of clamping operation, easy to cause intraoperative and postoperative complications, in 1999 I switched to mifepristone with misoprostol for pregnant 12 to 16 weeks of pregnant women