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应用彩色多普勒脐血流分析仪（脐血流分析仪）检测１７０例妊娠３６＋４～４２＋３ｗ的胎儿脐动脉血流频谱，测定收缩期峰值与舒张期低值之比（Ｓ／Ｄ），随诊至分娩。判断Ｓ／Ｄ值与高危因素、围产儿结局的关系。结果：Ｓ／Ｄ≥３者其高危因素及围产儿结局异常发生率较高，且与胎心监测仪结合明显提高胎儿窘迫诊断率。其敏感性较胎心监测仪更好
The umbilical artery blood flow spectrum of 170 pregnant women with gestational age 36 + 4 ~ 42 + 3w was detected by color Doppler umbilical cord blood flow analyzer (Umbilical blood flow analyzer), and the ratio of peak systolic and diastolic blood pressure (S / D) Clinic to childbirth. To determine the S / D value and risk factors, the relationship between perinatal outcome. Results: S / D≥3 were associated with high risk factors and abnormal outcome of perinatal infants. Combined with fetal heart rate monitor could significantly improve the diagnostic rate of fetal distress. Its sensitivity than fetal heart rate monitor better