Abstract:

Stillbirth is defined as a baby born without signs of life after 23+6 weeks of pregnancy， which is one of the important causes of perinatal death.If stillbirth can be effectively predicted，it is of great significance to reduce perinatal mortality.Maternal uterine artery doppler in the prediction of stillbirths in different gestational age shows that in second-trimester uterine artery PI is effective in identifying early stillbirths in association with PE，abruption or SGA. The fetal doppler blood flow parameters，including the umbilical artery，middle cerebral artery，venous catheter，abdominal umbilical vein，and so on，can improve the diagnostic rate of fetal distress. Combined monitoring of blood flow parameters，comprensive evaluation of intrauterine hypoxia and timely intervention may prevent stillbirth.

Key words: stillbirth, color doppler, ultrasound, uterine artery, fetus

摘要：

死胎是指妊娠大于23+6周、无生命迹象的胎儿，是围产儿死亡的主要原因之一，产前有效预测死胎，对降低围产儿死亡率具有重大意义。利用彩色多普勒超声监测不同孕期母体子宫动脉血流参数，特别是妊娠中期子宫动脉搏动指数（PI）对与子痫前期、胎盘早剥、小于胎龄儿（SGA）相关的死胎预测有重要意义；监测胎儿各项多普勒血流参数，如脐动脉、大脑中动脉、静脉导管、腹内脐静脉等，能够反映胎儿宫内缺氧状况，提高胎儿窘迫的诊断率；联合监测母体及胎儿各项血流参数，全面评估胎儿宫内缺氧程度并及时干预，可避免死胎的发生。

关键词: 死胎, 彩色多普勒, 超声, 子宫动脉, 胎儿