孕中期羊水过少胎儿动脉血流参数对胎儿窘迫的预测价值

Predictive value of artery blood flow parameters for fetal distress in mid-pregnancy fetus with oligohydramnios

目的:通过超声监测大脑中动脉、肾动脉及脐动脉血流,对孕中期羊水过少胎儿发生胎儿窘迫进行预测。方法:回顾性选取2020年1月至2022年5月于某院接受治疗的羊水过少的104例孕中期孕妇的临床资料,依据是否存在胎儿窘迫将其分为窘迫组(n=43)和非窘迫组(n=48)。采用Logistic多因素回归分析胎儿窘迫发生的危险因素,采用ROC曲线评估发生胎儿窘迫的预测效能,构建贝叶斯网络模型并对其进行验证。结果:胎动异常、胎心监护异常、血脂水平异常、血液流变学指标异常以及大脑中动脉、肾动脉、脐动脉参数异常均是发生胎儿窘迫的独立危险因素(P<0.05)。大脑中动脉、肾动脉和脐动脉血流参数三者联合评估发生胎儿窘迫的预测效能优于单一参数。贝叶斯网络模型预测显示,当患者3种动脉参数的异常概率为100%时,胎儿窘迫发生率由49.9%升高为61.50%,且经验证贝叶斯网络模型预测胎儿窘迫的净获益较高。结论:孕中期孕妇羊水过少时,对胎儿进行脐动脉、大脑中动脉和肾动脉血流参数的三者联合监测可以有效预测胎儿窘迫。

Objective To predict fetal distress in oligohydramnios fetuses in mid-pregnancy by monitoring the blood flows in middle cerebral artery,renal artery and umbilical artery by means of ultrasound.Methods Totally 104 mid-pregnancy women with oligohydramnios in some hospital from January 2020 to May 2022 were selected retrospectively,and were divided into a distress group(n=43)and a non-distress group(n=48)based on the presence of fetal distress.Logistic multivariate regression was used to analyze the risk factors for the occurrence of fetal distress;the predictive value for fetal distress was assessed with ROC curves;a Bayesian network model was constructed and validated.Results The independent risk factors for fetal distress included abnormal findings in fetal movement,fetal cardiac monitoring,lipid levels and blood rheology indices and abnormal parameters of middle cerebral artery,renal artery,and umbilical artery(P<0.05).Higher predictive efficiency could be obtained for fetal distress when the blood flow parameters of middle cerebral artery,renal artery and umbilical artery were combined than only the parameters of only one artery were involved in.The Bayesian network model predicted an increase in the incidence of fetal distress from 49.9%to 61.50%when the probability of abnormality in all the three artery parameters was 100%,which proved to gain a high net benefit.Conclusion For mid-pregnancy women combined monitoring of the blood flow parameters of middle cerebral artery,renal artery and umbilical artery may predict fetal distress effectively.