三维超声心动图定量左室局部射血分数对诊断室壁瘤的价值:与左室X-线造影的对照研究

目的探讨三维超声心动图定量分析左室节段收缩功能对心肌梗死后室壁瘤形成的诊断价值。方法38例心肌梗死患者分别进行了常规心电图检查、二维超声心动图检查、三维超声心动图检查及多投照体位左室造影检查，三维超声心动图定量分析左室节段收缩功能以左室节段射血分数为负值定义为局部室壁瘤形成，以左室造影为标准，计算3种方法诊断室壁瘤的敏感性和特异性。结果以左室造影为标准，常规心电图检查、二维超声心动图检查、三维超声心动图定量左室节段收缩功能分析诊断室壁瘤的特异性和敏感性分别为75％和92．3％，81．2％和92．8％，100％和94．1％。结论采用实时（动态）三维超声心动图定量分析左室节段射血分数能更准确地诊断心肌梗死后室壁瘤，其敏感性和特异性均显著高于二维超声心动图。

Three-dimensional Echocardiographic Determination of Left Ventricular Regional Ejection Fraction for Diagnosis of Ventricular Aneurism

Objective To explore the value of regional ejection fraction by 3-dimensional echocardiography in determining left ventricular aneurysm after myocardial infarction, Methods Totally 38 patients with myocardial infarction underwent electrocardiography, 2-dimensional echocardiography, 3 dimensional echocardiography and left ventricular angiography, respectively. The sensitivity and specificity of the three methods in determining left ventricular aneurysm were calculated and compared with left ventricular angiography. Results Compared with left ventricular angiography, the sensitivity and specificity of electrocardiography, 2 dimensional echocardiography, 3- dimensional echocardiography were 75% and 92.3%, 81.2% and 92.8% , 100% and 94.1%, respectively. Conclusions Negative regional ejection fraction determined by 3 dimensional echocardiography was a good index to diagnose left ventricular areunysm.