超声脐血流与大脑中动脉血流定量检测用于胎儿宫内窘迫的临床研究

The clinical research of quantitative detection of ultrasonic in umbilical blood flow and middle cerebral artery blood flow in fetal distress

目的研究超声脐血流与大脑中动脉血流定量检测用于胎儿宫内窘迫的临床应用价值。方法纳入150例住院分娩孕妇作为研究对象,其中胎儿窘迫组72例,正常对照组78例。对所有孕妇行彩色多普勒超声检查,记录脐动脉(UA)和大脑中动脉(MCA)收缩期末期最大血流速度与舒张末期血流速度比值(S/D)、阻力指数(RI)及搏动指数(PI)。采用受试者工作曲线(ROC)分析超声UA和MCA血流检测在诊断胎儿宫内窘迫中的临床应用价值。结果胎儿窘迫组UA的S/D、RI及PI均显著高于正常对照组(P<0.05),MCA的S/D、RI及PI均低于正常对照组(P<0.05)。UA对预测胎儿宫内窘迫的ROC曲线显示S/D、RI及PI的敏感度为0.986、0.958及0.944,特异度为0.614、0.625及0.534。MCA对预测胎儿宫内窘迫的ROC曲线显示S/D、RI及PI的敏感度为0.897、0.924及0.892,特异度为0.712、0.657及0.684。结论产前超声联合检测UA和MCA血流参数有助于筛查胎儿宫内窘迫,提高诊断准确性,指导临床。

Objective To study the clinical value of ultrasonic quantitative detection in blood flow and middle cerebral artery blood flow in fetal distress. Methods 150 hospitalized pregnant women were included in the study, including fetal distress group （ n = 72） and normal control group （ n = 78 ）. Color Doppler uhrasonography was performed on all pregnant women. The maximal systolic blood flow velocity and end diastolic blood flow velocity ratio （S/D） , resistance index （RI） and pulsatility index （PI） of the umbilical artery （UA） and the middle cerebral artery （MCA） were recorded. The application value of ultrasonic UA and MCA blood flow detection were analyzed by the receiver operating curve （ROC）. Results The S/D, RI and PI of UA in fetal distress group were significantly higher than those in normal control group （ P 〈 0. 05 ）. The S/D, RI and PI of MCA in fetal distress were significantly lower than those in normal control group （ P 〈 0.05 ）. The ROC of UA and MCA showed that S/D, RI and PI of sensitivity were [0. 986, 0. 958, 0. 944 vs 0. 897, 0. 924, 0. 892] , the specificity were [ 0. 614, 0. 625, 0. 534 vs 0. 712, 0. 657, 0. 684 ]. Conclusion The prenatal ultrasound combined detection UA and MCA blood flow parameters are helpful for screening fetal distress, improving diagnostic accuracy and guiding the clinical.