摘要
目的 评价定量组织速度成像技术测定三尖瓣环的运动速度在检测下壁合并右室梗死中的应用价值。方法 研究对象分为初次急性下壁合并右室心肌梗死组 (Ⅰ组 ) 18例、初次急性单纯下壁心肌梗死不合并右室心肌梗死组 (Ⅱ组 ) 2 0例和正常对照组 (Ⅲ组 ) 2 0例。在标准心尖四腔心切面二维图像指引下 ,用M型超声记录三尖瓣环右室游离壁处运动曲线 ,测量右室收缩期、舒张早期与晚期室壁运动幅度 ;应用定量组织速度成像 (QTVI)技术 ,记录该处运动速度曲线 ,测量右室收缩期、舒张早期与晚期的运动峰速度。结果 下壁合并右室心肌梗死组右室游离壁三尖瓣环处的收缩期位移 (SD)、舒张期早期位移 (DED)及收缩期峰速度 (VS)、舒张早期峰速度 (VE)、VE VA(舒张晚期峰速度 )均显著低于对照组 ,其中VS 和VE 也显著低于单纯下壁心肌梗死组 ;单纯下壁心肌梗死组的SD、DED及VS 显著低于对照组 ;VA 在三组间无显著差异。结论 应用定量组织速度成像技术测量右室游离壁三尖瓣环运动速度可作为评价下壁心肌梗死是否合并右室心肌梗死的一项新指标 ,同时能测定右室收缩和舒张功能 ,有助于指导治疗和随访观察。
Objective To assess right ventr ic ular (RV) function by quantitative tissue velocity imaging(QTVI) in patients wit h RV infarction. Methods Eighteen patients with a first acute inf erior wall myocardial infarction (MI) and RV infarction (group Ⅰ), 20 patients with a first acute inferior wall MI without RV involvement (groupⅡ) and 20 age -matched healthy control subjects (group Ⅲ) underwent QTVI and M-echocardiogr aphy. The tricuspid annular systolic and diastolic velocities and amplitudes wer e acquired in apical four-chamber views at the junction of the right ventricula r free wall and the anterior leaflet of the tricuspid valve using QTVI and M-ec hocardiography. Results In patients with inferior wall MI and RV infarction, the peak systolic and the peak early and late diastolic tricuspid an nular velocity were significantly lower than those in group Ⅲ, the systolic and early diastolic amplitude of tricuspid annular motion were significantly lower than those in group Ⅱ. In patients with inferior MI without RV infarction, only the systolic and early diastolic amplitude of tricuspid annular motion and the peak systolic velocity were significantly lower than those in group Ⅲ. T he late diastolic peak velocity (V A) had no significant difference in the thre e group s. Conclusion The evaluation of tricuspid annular velocitie s at RV free wall using QTVI provides a rapid and noninvasive tool for assessing inferior wall MI with or without RV infarction, and for assessing RV function.
出处
《中华老年多器官疾病杂志》
2004年第3期182-184,共3页
Chinese Journal of Multiple Organ Diseases in the Elderly
关键词
定量组织速度成像
检测
急性下壁心肌梗死
合并症
右室心肌梗死
quantitative tissue velocity imaging
tricuspid a nnulus
right ventricular function
myocardial infarction
