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采用羊膜腔穿刺注射 Rivanol 中止12～14周妊娠,由于此时期羊水量偏少,不易准确无误穿刺到羊膜腔内。加之子宫颈管硬长,胎儿又多呈横位,子宫颈管缺乏胎儿先露部的直接压迫,不易被宫缩所扩张开大,故引产成功率不高;采用钳刮术中止妊娠,由于胎盘、胎儿已成形,骨骼亦已发育,尤其是头颅较大,手术有一定困难,并有发生大出血、穿孔、感染、羊水栓塞等并发症之危险。作者近年来对钳刮术作了一些改进,通过临床实践证实这些方法和措施,
Adoption of amniocentesis Rivanol suspension of pregnancy 12 to 14 weeks, due to the low number of amniotic fluid during this period, not easy to accurately puncture the amniotic cavity. Coupled with cervical long and stiff, the fetus was mostly horizontal, the cervix lack of fetal direct exposure to the Ministry of the Ministry of oppression, is not easy to be expanded by contractions, so the success rate of induction of labor is not high; use forceps curettage termination of pregnancy, due to Placenta, the fetus has been formed, the bones have also developed, especially the larger skull, surgery has some difficulties, and the occurrence of bleeding, perforation, infection, amniotic fluid embolism and other complications of danger. In recent years, the author made some improvements to forceps curettage and confirmed these methods and measures through clinical practice.