【病例摘要】孙××,已婚,27岁,孕,产,住院号811399。月经周期规律,末次月经为1980年8月23日,预产期为1981年5月30日。妊娠期间未见异常改变,突于1981年4月21日晨4时无诱因出现阴道流水,无明显阵发性腹痛,诊为第一胎妊娠34 4/7周、双胎、胎膜早破入院。入院后查体温36.2℃,脉搏84次/分, [Case Summary] Sun × ×, married, 27 years old, pregnant, obstetric, hospital No. 811399. Menstrual cycle regularity, the last menstrual period August 23, 1980, the expected date of May 30, 1981. No abnormal changes during pregnancy, suddenly in the morning of April 21, 1981 at 4 am no incentive to vaginal water, no significant paroxysmal abdominal pain, the first child was diagnosed 34 4/7 weeks of pregnancy, twins, premature rupture of membranes Admission. After admission, check body temperature 36.2 ℃, pulse 84 beats / min,