产妇,24岁,制药厂工人,第一胎。预产期4月18日。产前检查4次,诊断为双胎。1974年3月30日因先兆子痫入院,4月6日0时宫缩开始,3时自然破膜,9时子宫口开全。因避免产妇过度用力,提早结束分娩,于9时50分用吸引器助产,娩出一女婴,自然呼吸,体重2公斤(水脐),10时10分自然娩出第二个女婴,自然呼吸,体重1.8公斤。10时30分胎盆自然娩出,为单卵双胎,一个胎盆,两条脐带,胎盆 Maternal, 24 years old, factory worker, first child. The expected date of birth on April 18. Prenatal examination 4 times, diagnosis of twins. March 30, 1974 because of preeclampsia admitted to hospital, at 0 o’clock on the April 6 began contractions, 3:00 natural rupture of membranes, cervix open at 9:00. In order to avoid over-exertion of maternal, early termination of childbirth, at 9:50 midwifery with aspirator, giving birth to a baby girl, natural breathing, weight 2 kg (water navel), 10:10 natural delivery of a second baby girl, naturally Breathing, weighing 1.8 kg. 10:30 natural delivery of the births for the monozygotic twins, a births, two umbilical cord, the births