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The value of uterine arteries hemodynamic indexes in predicting adverse outcomes of pregnancy-induced hypertension |
WANG Ya-yun1, SU Hai-li2, TUO Sheng-jun1, YU Ming1, LIU Zhi-ling1, QIAO Yuan3, CHEN Xiao-yuan3 |
1. Department of Ultrasound, Xijing Hospital, the Fourth Military Medical University, Xi’an 710032, China;
2. University of Cincinnati Medical Center, Cincinnati Ohio 45242, USA;
3. The Northwest Women and Children Hospital, Xi’an 710061, China |
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Abstract Objective: To discuss the value of the clinical data and hemodynamic indexes of uterine arteries in predicting adverse outcomes in patients with pregnancy-induced hypertension(PIH). Methods: Eighty-seven PIH patients in second-third trimester complicated with fully follow-up materials were chosen for this study. The general clinical data were recorded. A series of dynamics indexes of uterine artery were detected by conventional abdominal ultrasound. All the patients were followed-up through the whole pregnant period. Eclampsia, fetal distress in uterus and early pregnancy termination were recorded as the adverse outcomes. The patients were divided into benign group and adverse group based on the outcomes. Results: Sixty-three PIH patients(72.4%) presented adverse outcomes during the followed-up period. The proportion of severe preeclampsia in adverse group increased significantly compared with the benign group(58.7% vs 20.8%, P=0.003). In adverse group, patients were more likely to have the early diastolic notch in both sides of uterine arteries compared to the patients in begin group(39.7% vs 16.7%, P=0.042). The PI, RI and S/D values of uterine artery were increased significantly in PIH patients presented adverse outcomes in late pregnancy(P<0.05). When the cut-off value of PI was 0.97, the sensitivity and specificity of predicting adverse outcomes were 50.8% and 83.8% respectively. When the cut-off value of RI was 0.51, the sensitivity and specificity of predicting adverse outcomes were 63.5% and 70.8% respectively; When the cut-off value of S/D was 2.1, the sensitivity and specificity of predicting adverse outcomes were 65.1% and 70.8% respectively. The multinomial logistic regression analysis showed that RI>0.51 was the independent predictive factor of adverse outcomes of PIH patients(OR=4.224, P=0.006). Conclusions: PIH can cause multiple hemodynamic changes. Hemodynamic changes of the uterine arteries which could be assessed by ultrasound has certain significance for the prognosis of PIH, and our study suggests that the RI could be the independent predictive factor of adverse pregnancy outcomes.
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Received: 10 November 2016
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