实时三维超声心动图评价右心室心肌梗死后收缩功能

摘要

目的 应用实时三维超声心动图(RT-3DE)评价冠心病患者右心室功能变化.方法 选取右冠状动脉单支病变(狭窄≥70%)但无心肌梗死29例(组Ⅱ),右冠状动脉病变伴心肌梗死22例(组Ⅲ),以及对照组36例(组Ⅰ),应用三维超声心动图测量各组右室收缩末期容积(RVESV)、右室舒张末期容积(RVEDV)、右室每搏量(RVSV)、右室射血分数(RVEF).结果 对照组与右冠状动脉狭窄组RVESV、RVEDV、RVSV、RVEF差异无统计学意义(均P＞0.05);对照组、右冠状动脉狭窄组与心肌梗死组相比RVESV、RVEDV、RVEF差异有统计学意义(均P＜0.01).心肌梗死组患者右心室形态不同程度改变.结论 实时三维超声心动图能通过测量右室容积及射血分数来评价冠心病患者右室收缩功能的变化.%Objective To evaluate right ventricular function in patients with coronary heart disease by real-time three-dimensional echocardiography( RT-3DE). Methods Twenty-nine patients with isolate right coronary artery stenosis(≥70 ％ stenosis) without myocardial infarction(group Ⅱ ) ,22 patients with right coronary artery stenosis and right ventricular myocardial infarction(group Ⅲ ) , and 36 healthy control participants ( group Ⅰ ) were studied. Right ventricular end-systolic volume ( RVESV) , right ventricular enddiastolic volume( RVEDV) , right ventricular stroke volume( RVSV) , and right ventricular ejection fraction( RVEF) were measured by using RT-3DE. Results There was no statistically significant difference in RVESV, RVFDV,RVSV and RVFF between group Ⅰ and group Ⅱ (all P＞0. 05) ,but there was significant difference between group Ⅰ or Ⅱ and group Ⅲ (all P＜0. 01). And morphological changes of the right ventricle could be observed. Conclusion Right ventricular functional change could be evaluated by using RT-3DE to calculate right ventricular volume and RVEF.