摘要
目的应用组织多普勒（TDI）结合M型超声技术评价急性下壁心肌梗死（心梗）患者右心室功能变化。方法急性下壁心梗患者50例，男34例、女16例；正常对照组50例，男30例，女20例。急性心梗第4～7天行超声心动图检查，采用M型超声记录三尖瓣环右心室游离壁处运动曲线，测量收缩期、舒张早期和舒张晚期运动幅度（SD、DED和DAD）及DED／DAD比值；并应用TDI技术，记录该处速度曲线，测量右室收缩期、舒张早期和晚期最大运动速度Sm、Em和Am及Em／Am比值。结果急性下壁心梗患者三尖瓣环右室游离壁处SD、DED运动幅度、DED／DAD比值均较对照组显著降低[分别为（18．7±5．5）mm和（24．9±2．8）mm、（10．9±3．4）mm和（16．6±3．4）mm、1．5±0．6和2．3±0．9，t值分别为18．711、19．055、6．068，均P〈0．013；Sm、Em和Em／Am明显下降[分别为（12．9±2．8）cm／s和（15．9±2．7）cm／s、（12．3±3．4）cm／s和（16．7±4．7）cm／s、0．9±0．4和1．1±0．3，t值分别为11．851、14．781、2．127，P〈0．01或P〈0．053。结论急性下壁心梗损害右室舒缩功能，表现为既有运动幅度下降又有最大运动速度下降，舒张功能降低以舒张早期性能下降为主。
Objective To evaluate the right ventricular （RV） function in patients with acute inferior wall myocardial infarction （ AIMI ） with tissue Doppler imaging and M-mode echocardiography. Methods There were 50 cases of AIMI, 34 males and 16 females. And 50 healthy persons were as control group, 30 males and 20 males. From the echocardiographic apical 4- chamber views, the systolic, early and late diastolic motion （SD, DED, DAD） of the tricuspid annulus were recorded at the RV free wall with the use of two-dimentional guided M-mode recordings. Peak systolic, early and late diastolic velocities （Sm, Era, Am） of the tricuspid annulus were also recorded at the same site by tissue Doppler imaging. The ratios of DAD/DAD and Em/Am were calculated. Results SD, DED, Sm and Em of the tricuspid annulus at the RV free wall, as well as the ratios of DED/DAD and Em/Am, were reduced significantly in patients with AIMI as compared with health control [SD： （18.7±5.5） mm vs. （24.9±2.8） mm, DED： （10.9±3.4） mm vs. （16.6±3.4） mm; Sm： （12.9±2.8） cm/s vs. （15.9±2.7） cm/s; Em： （12.3±3.4） cm/s vs. （16.7±4.7） cm/s; DED/DAD： （1.5±0.6） vs. （2.3±0.9）; Em/Am： （0.9±0.4） vs. （1.1±0.3）; t=18.711, 19. 055, 11. 851, 14. 781, 6. 068, 2. 127; P〈0.01 or 0.05, respectively]. There were no statistically significant differences in DAD and Am between two groups （DAD： （8.8±1.9） mm vs. （7.7±2.1） mm; Am： （17.5±4.8） cm/s vs. （16.6±5.2） cm/s; t=0.414, 0.649; both P〉0.05]. Conclusions The systolic and diastolic functions of RV are impaired in patients with AIMI.
出处
《中华老年医学杂志》
CAS
CSCD
北大核心
2010年第5期359-362,共4页
Chinese Journal of Geriatrics
关键词
心肌梗死
心室功能
右
Myocardial infarction
Ventricular function, right
