患者32岁，孕2产1。因停经20＋4周未觉胎动于1995年10月17日入院。查体：体温36．5℃，血压14／10千帕，心肺无异常。子宫如孕3一个月大小，双侧附件正常。B超提示：子宫增大，宫内见胎儿，颅径3．2厘米，未见胎心搏动，胎盘位于子宫前壁，羊水量较少。实验室检查：血红蛋白12 The patient is 32 years old and has 2 pregnancies. Due to menopause 20 +4 weeks did not feel fetal movement in October 17, 1995 admission. Physical examination: body temperature 36.5 ℃, blood pressure 14/10 kPa, no abnormal heart and lungs. Uterus, such as pregnancy 3 month size, bilateral attachment normal. B-Tip: Uterine enlargement, intrauterine see the fetus, cranial diameter of 3.2 cm, no fetal heart beat, the placenta is located in the anterior wall of the uterus, amniotic fluid less. Laboratory tests: hemoglobin 12