Tei指数评估妊娠期高血压疾病胎儿右室功能的研究

The value of Tei index for evaluating fetal right ventricular function in pregnancy-induced hypertension syndrome

目的:探讨Tei指数评价妊娠期高血压疾病(HDCP)胎儿右室功能的临床价值。方法:应用多普勒超声心动图测量HDCP胎儿63例(HDCP组)及正常妊娠胎儿60例(正常对照组)的三尖瓣区一个心动周期内的等容舒张时间(IRT)、等容收缩时间(ICT)和射血时间(ET),并计算右室Tei指数。结果:HDCP组ICT、ET与正常对照组比较差异无统计学意义(P>0.05),而IRT较正常对照组显著延长(P<0.05);HDCP组Tei指数明显高于正常对照组(P<0.05)。结论:Tei指数作为评估胎儿右心室整体功能的指标之一,能准确地反映HDCP患者胎儿的右心功能,具有较好的临床应用价值。

Objective：To investigate the value of Tel index for evaluating fetal ventricular function in women with hypertensive disorder complicating pregnancy （HDCP）. Methods： Fetal echocardiograms were performed in 63 women with HDCP （HDCP group） and 60 with normal pregnancy （control group）. Tel index was obtained by calculating the ratio of the isovolumic contraction time （ICT） and isovolumic relaxation time （IRT） to the ejection time （ET） of the right ventricle. Results： No significant difference was noted in ICT and ET between HDCP group and control group （P〉0.05）. IRT in HDCP group was longer than that in the control group （P〈0.05）. Significant difference was found in the right ventricular Tel index between HDCP group and control group （P〈0.05）. Conclusion： Tel index could serve as one of the useful indica tots in evaluating fetal right ventricular function.