QRS计分系统对心肌梗死面积测定意义的新评价

为评价QRS计分系统对心肌梗死面积测定的临床意义,比较观察101例伴或不伴心电学干扰因素病人心电图QRS计分法和定量解剖学方法对左心室心肌梗死面积的测定结果,及人工测量与计算机自动测量QRS波群的差别。结果QRS计分系统对无心电影响因素的梗死面积测定与病理解剖学存在正相关关系(r=0.45—0.88),但有心电学干扰因素存在时,两者无相关性。人工测量与计算机测量有高度正相关(r>0.7)。认为QRS计分系统对估测前壁心肌梗死具有良好的实用价值,有心电学干扰因素时不够精确;对进一步改善测定梗死面积的QRS计分系统提供了实验依据。

Evaluation of QRS scoring system for estimating my-ocardial infarction size

In order to discuss clinical value of QRS scoring system for confirming size of myocardial infarction, we observed 101 patients with and without confounding factors on ECG for comparison of QRS scores with postmortem anatomic quantilation of MI size. Difference between QRS scores by manual operatilon and automated measurement was also analyzed. Results showed a good relation between QRS scoring systemand postmortem anatomic quantitation in patients without confounding factors on ECG ( r=0.45-0. 88), while no relation was revealed in patients with confounding factors. Study of manual method vs automated method showed a relatively high correlation ship ( r>0.7). In conclusion, QRS scoring system is of great value in estimating anterior myocardial infarction size, but less accurate for patients with confounding factors on ECG. This study might be helpful in improvement of QRS scoring system for determination of MI size.