患者女,33岁,于1997年3月9日第二胎足月妊娠入院待产。患者整个孕期顺利,平素身体健康,既往无病史。查体一般情况好,血压16/10kPa,心肺无异常。产科检查胎儿右枕后位,胎心音好,羊水正常未破,宫内孕42周无产兆。入院当天在局麻下行子宫下段剖宫产手术,娩一正常女婴,手术顺利,术中出血不多。术后给予产妇补液加抗生素预防感染, Female, 33, was admitted to hospital on March 9, 1997 for second-term full-term pregnancy. Patients throughout the pregnancy smooth, usually healthy, past no history of illness. Physical examination is generally good, blood pressure 16 / 10kPa, no abnormal heart and lungs. Obstetric examination fetal right occiput, fetal sound good, normal amniotic fluid is not broken, intrauterine pregnancy 42 weeks no childbirth. The day of admission to local anesthesia in the lower uterine segment cesarean section surgery, giving birth to a normal baby girl, the operation was smooth, less bleeding during surgery. After giving maternal fluid plus antibiotics to prevent infection,