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对186例住院分娩证实的脐带绕颈孕妇，根据是否出现胎儿窘迫，新生儿窒息和相对性脐带过短分为高、低危两组，用脐动脉血流S／D值，胎头高浮和B超提示脐带绕颈周数三项指标分别对两组进行预测。结果：脐动脉血流S／D值≥3.0，胎头高浮和脐带绕颈在2周或以上者发生高危的机会均明显增多，三项指标预测的阳性率达90．8％。提示：脐动脉血流S／D值，胎头高浮和脐带绕颈周数以及胎心监护均能很好地对脐带统颈时胎儿的宫内安危进行判断，为脐带绕颈的分娩方式的选择提供依据。
According to whether fetal distress, neonatal asphyxia and relative umbilical cord were too short were divided into high and low risk groups. The umbilical cord blood flow S / D and fetal head floating And B-ultrasound prompted the umbilical cord around the neck number three indicators of the two groups were predicted. Results: The S / D values of umbilical artery blood flow ≥3.0, high fetal head flotation and cord around the neck at 2 weeks or more were all significantly increased. The positive predictive value of the three indexes was 90.8%. Tip: Umbilical artery blood flow S / D value, high fetal head and umbilical cord around the neck number and fetal heart monitoring can be well on the umbilical cord when the fetal uterine endometrial safety assessment for the umbilical cord around the neck mode of delivery The basis for the choice.