Objective:To analyze the causes and associated factors of fetal death and to explore effective preventive measures so as to reduce the incidence rate of fetal death .Methods:Clinical data of 85 pregnant women ,who suffered from intrauterine fetal death with gestational age of 20‐42 weeks ,in Obstetrics & Gynecology Hospital of Fudan University during Jan 2010 and Dec 2014 were analyzed retrospectively .Results:The incidence rate of fetal death was 2 .36‰ .The highest incidence rate of fetal death emerged at the gestational age of 28‐31+6 weeks ,and accounted for 31 .8% .The causes ,in turn ,were maternal factors for 54 cases ,fetal factors for 28 cases ,umbilical cord factors for 13 cases ,placental factors 10 cases ,unexplained factors for 10 cases .And 27 cases saw a doctor for abnormal fetal irritability .The rate of pathological examination was 21 .12% .And 11 pa‐tients had more than two kinds of causes of fetal death .Conclusions:Maternal complications were the most common causes of fetal death .In order to reduce the perinatal rate of fetal death ,actions such as attaching importance to prenatal examination and early intervention and treatment ,enhancing fetal monitoring and terminating pregnancy at proper time point ,should be taken .%目的：分析死胎的主要原因及相关影响因素，探讨预防措施，降低死胎发生率。方法：回顾分析2010年1月—2014年12月复旦大学附属妇产科医院收治的85例孕20～42周发生死胎的孕妇的临床资料。结果：死胎发生率为2．36‰，其中孕28～31＋6周死胎发生率最高，占31．8％，死胎的原因依次为：母体因素54例，胎儿因素28例，脐带因素13例，胎盘因素10例，不明原因10例；以胎动异常就诊者27例；病理送检率21．12％。其中11例患者有2种以上病因。结论：母体合并症或并发症为死胎发生的首要原因。应重视孕期检查，早期干预和治疗，加强胎儿监测，适时终止妊娠，以降低围产儿死胎发生率。
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