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目的 探讨联合仪器监护判断胎儿预后的价值。方法 联合应用胎心无负荷试验 (NST)及多普勒脐动脉血流速度测定对 6 73例妊娠晚期孕妇进行观察。结果 NST可疑型和无反应型组S/D≥ 3者发生率比反应型组明显增高 ,在S/D≥ 3组中羊水污染、1分钟Apgar评分≤ 7分及低体重儿发生率均明显高于S/D <3组 (P <0 0 0 5 ) ,NST可疑或无反应型与S/D比值≥ 3预测胎儿预后的特异性、敏感性、阳性预测值和阴性预测值分别为77 86 %、83 6 5 %、40 85 %、96 30 %与 98 2 4%、2 8 85 %、75 0 0 %、88 31% ,NST可疑或无反应型联合S/D比值≥3的特异度、敏感度、阴性预测值和阳性预测值为 99 30 %、2 8 85 %、88 42 %、88 2 4%。结论 NST与多普勒脐动脉血流速度测定联合应用可以提高胎儿宫内缺氧状态的诊断 ,为临床及时纠正宫内缺氧提供了可靠依据。
Objective To explore the value of combined instrument monitoring in predicting fetal prognosis. Methods A total of 673 pregnant women of the third trimester of pregnancy were observed with fetal heart rate load test (NST) and Doppler umbilical artery blood flow velocity. Results The incidence of S / D≥3 in both NST suspicious and non-responsive groups was significantly higher than that of reactive groups, and the incidences of amniotic fluid contamination, Apgar score≤7 at 1 minute, and low birth weight were all significantly higher in S / D≥3 group The specificity, sensitivity, positive predictive value and negative predictive value of prognosis were higher than that of S / D <3 groups (P <0 055), NST suspicious or non-responsive and S / D ratio ≥ 3 respectively 86%, 83.65%, 40.85%, 96.3% and 98.24%, 28.5%, 75.0%, 88.31%, respectively, and the SST ratio of suspected or unrelated NST was ≥3 Degree, sensitivity, negative predictive value and positive predictive value were 99 30%, 28 85%, 88 42%, 88 2 4%. Conclusion The combined application of NST and Doppler umbilical artery blood flow velocity measurement can improve the diagnosis of fetal intrauterine hypoxia and provide a reliable basis for clinical timely correction of intrauterine anoxia.