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目的:探讨心肌梗死后心肌存活面积与心功能的关系。方法:对98例曾患有心肌梗死的患者,用硝酸甘油介入、99Tc-甲氨基异丁基异氰(99TcmMIBI)二次扫描方法测定存活心肌面积,同时计算出心功能指标。结果:存活心肌面积大组与存活心肌面积小组平均年龄及有无心力衰竭、心脏扩大等各项危险因素例数比较,差异无显著性意义(P>0.05);前者的严重心律失常的发生率为58.2%,后者为25.6%,2组有显著差异(P<0.01)。结论:提示心肌梗死后存活心肌面积与心功能和心率失常密切相关。
Objective: To investigate the relationship between myocardial viability and cardiac function after myocardial infarction. Methods: Ninety-eight patients with myocardial infarction were enrolled in this study. The area of viable myocardium was determined by 99Tc-methylaminoisobutylisocyanide (99Tcm-MIBI) secondary scanning with nitroglycerin and the cardiac function was calculated. Results: There was no significant difference in the mean age of viable myocardium area and the number of risk factors such as heart failure and heart enlargement (P> 0.05). The incidence of serious arrhythmia in the former Was 58.2%, the latter was 25.6%, two groups were significantly different (P <0.01). Conclusion: It is suggested that the area of viable myocardium after myocardial infarction is closely related to cardiac function and heart rate disorder.