多普勒组织成像评价肺动脉高压患者右室心功能应用

目的:应用多普勒组织成像技术(Doppler tissue imaging,DTI)测定肺动脉高压(Pulmonary hypertension,PHT)患者的三尖瓣环运动频普,探讨其评价右室心功能的价值。材料与方法:常规超声心动图检查28例PHT组及32例健康对照组,并检测三尖瓣口舒张早期速度(E)、舒张晚期速度(A),DTI检测三尖瓣环的收缩期峰值速度(Sa)、舒张早期速度(Ea)、舒张晚期速度(Aa),计算E/A、Ea/Aa,并对两组参数进行比较。结果:PHT组三尖瓣环及瓣口Sa、Ea、Ea/Aa及E/A均减低(P0.05),Ea/Aa更为明显(P0.01),Aa高于对照组(P0.05)。结论:应用DTI测定三尖瓣环运动,可以敏感地反映PHT患者右室功能的变化,是评价右室整体功能的较好指标。

Assessment of Right-ventricular Systolic and Diastolic Function in Patients with Pulmonary Hypertension by Doppler Tissue Imaging

Purpose：To determine RV systolic and diastolic function in patients with pulmonary hypertension（PHT） using Doppler tissue imaging（DTI） parameters of the tricuspid annulus.Materials and Methods：28 patients with pulmonary hypertension were studied,and 32 healthy subjects as control group.Echocardiography parameters were measured including Early diastolic velocity（E）.Late diastolic velocity（A）.in Tricuspid mouth,DTI parameters were measured including systolic velocities（Sa）,early diastolic velocities（Ea）,and late diastolic velocities（Aa）,Calculated E/A、Ew/Aw,in tricuspid annulusand Comparison of two groups of parameters.Results：Comparing to controls group,Sa.Ea.Ea/Aa.E/A were all decreased（P〈0.05）,Ea/Aa More obvious（P〈0.01）,Aa were escalated in patients with PHT（P〈0.05）.Conclusion：DTI of the TAM can be used to assess RV right ventricular function in patients with PHT.Was to evaluate the right ventricular function better indicator of overall.