患者32岁,因停经38周于2011年6月8日入院待产。定期产检无异常。无血栓病史、慢性心肺疾病史及静脉曲张病史等。2009年1月5日曾孕34周因“胎膜早破、胎儿窘迫”剖宫产。入院查体无异常。辅助检查:血、尿常规、凝血功能、肝肾 The patient, 32, was admitted to hospital on June 8, 2011 for 38 weeks after menopause. Regular birth control without exception. No history of thrombosis, history of chronic heart disease and history of varicose veins. January 5, 2009 had 34 weeks of pregnancy because of “premature rupture of membranes, fetal distress,” cesarean section. Admission examination without exception. Auxiliary examination: blood, urine, coagulation, liver and kidney