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通过对47例急性心肌梗塞病人的心电图QRS计分与急性心肌梗塞3周后所作冠脉造影测定的左室射血分数进行相关性分析,发现两者有显著的相关性(r=-0.67,P<0.01),并推导出两者的回归方程式为LVEF(％)=59.62-2.97×QRSs,证明心电图QRS计分是估价急性心肌梗塞后心功能的一种简单可靠的方法,同时发现QRS计分≤3分与>3分者左室射血分数相差十分显著(P<0.01),认为QRS>3分可作为心肌梗塞后心功能异常的指标。
The correlation between QRS score of 47 patients with acute myocardial infarction and left ventricular ejection fraction measured by coronary angiography 3 weeks after acute myocardial infarction was found to be significant (r = -0.67, P <0.01). The regression equation of the two was deduced as LVEF (%) = 59.62-2.97 × QRSs. It was proved that ECG QRS score is a simple and reliable method to evaluate the cardiac function after acute myocardial infarction. Points ≤ 3 points and> 3 points were significantly different left ventricular ejection fraction (P <0.01), that QRS> 3 points can be used as an index of cardiac dysfunction after myocardial infarction.