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目的运用右室侧壁三尖瓣环组织多普勒TDI-Tei指数评价肺动脉高压患者右心室功能。方法 30例健康者作为对照组,90例肺动脉高压患者依肺动脉压程度分为轻、中、重度3个亚组,各30例,超声常规测量右心室横径、右心房横径、肺动脉主干内径,下腔静脉呼吸动度,并测量三尖瓣前叶瓣环的组织多普勒频谱,测量其右室Tei指数,进行比较分析。结果肺动脉高压轻、中、重组患者右心结构及肺动脉出现渐进性重构,右心室Tei指数敏感地反映肺动脉压力及右心功能变化。结论肺动脉高压患者右心室Tei指数升高,右心室整体功能降低,且与肺动脉收缩压相关。TDI-Tei指数可以灵敏地反映肺动脉高压患者右心室功能的变化,是评价其右心室整体功能的较好指标。
Objective To evaluate right ventricular function in patients with pulmonary hypertension by using Doppler TDI-Tei index of right ventricular tricuspid annulus tissue. Methods Thirty healthy subjects were included as control group. 90 patients with pulmonary hypertension were divided into 3 groups: mild, moderate and severe, 30 patients in each group according to the degree of pulmonary arterial pressure. The right ventricular transverse diameter, right atrial diameter, , Vena cava respiratory rate, and measuring the anterior tricuspid annulus Doppler tissue Doppler spectrum, measure the right ventricular Tei index, comparative analysis. Results The right heart structure and pulmonary artery remodeling were progressive in mild, moderate and severe PAH patients. The Tei index of right ventricle reflected the changes of pulmonary artery pressure and right heart function. Conclusions The Tei index of the right ventricle in patients with pulmonary hypertension is increased, and the overall function of the right ventricle is decreased, which is related to the pulmonary systolic pressure. The TDI-Tei index can sensitively reflect the change of right ventricular function in patients with pulmonary hypertension, which is a good indicator to evaluate the overall function of right ventricle.