患女,28岁。孕~4产~3,孕22周,末次月经1988年4月30日。停经后无阴道出血史。停经3个月妊娠反应征,持续月余消失。孕4个月觉胎动。要求引产而入院。既往月经正常。产检:宫底平脐,头先露,浮,阴道无出血,附件(-)。于10月27日经腹壁羊膜腔内注射利凡诺溶液100mg。注药3天,孕妇觉阵发性腰骺部憋 Female, 28 years old. Pregnancy ~ 4 production ~ 3, pregnant 22 weeks, the last menstrual April 30, 1988. No history of vaginal bleeding after menopause. 3 months after menopause pregnancy reaction syndrome, continued more than a month disappeared. Pregnant 4 months to feel fetal movement. Ask for induction of labor and admission. Past menstrual normal. Inspection: uterine flat uterus, the first first exposed, floating, vaginal bleeding, Annex (-). On October 27 by intra-abdominal amniotic injection of rivanol solution 100mg. Injection for 3 days, pregnant women feel paroxysmal epiphysis Department Bie