近年来有的学者认为,临产后行人工破膜,可缩短产程,降低母儿的发病率及围产儿死亡率,但对破膜的指征和时间尚无统一认识。1985年我们观察妊娠38～42周住院初产妇381例,年龄24～30岁,无胎位异常,无骨盆狭小,孕妇无心、肺及全身疾患,新生 In recent years, some scholars believe that artificial rupture of membranes after labor can shorten the labor process, reduce the incidence of maternal and infant mortality rates, but the signs and timing of rupture of the membrane is not uniform understanding. In 1985, we observed 381 primary primipara in 38-42 weeks of gestation, aged from 24 to 30 years without any abnormalities of the fetus, no pelvic pelvis, unintentional pregnant women, pulmonary and systemic diseases, freshmen