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作者观察的亚急型克山病１５３例中，心电图发生低电压者９７例（６３．４％），其中死亡４２例，病死率４３．３％，为非低电压组的１．３５倍，其临床痊愈率（３６．１％）明显低于后者（５３．６％），Ｐ＜０．０５。低电压组合并其他心肌损害的心电图改变如病理性Ｑ波、ＳＴ－Ｔ异常、完全或不完全性右束支阻滞等明显多于非低电压组，Ｐ＜０．０５或Ｐ＜０．０１，表明心肌损害广泛。ＱＲＳ电压随病情的改善或加重有动态变化，故心电图ＱＲＳ电压及其变化可作为评估亚急型克山病预后的重要指标之一。
Of the 153 subacute KK cases observed by the authors, 97 (63.4%) had low voltage electrocardiograms, 42 of which died, with a case fatality rate of 43.3%, which was 1.35 times that of non-low voltage group. The clinical cure rate (36.1%) was significantly lower than the latter (53.6%), P <0.05. Electrocardiogram changes such as pathological Q wave, ST-T abnormality, complete or incomplete right bundle branch block, etc. were significantly more in low voltage group and other myocardial damage than in non-low voltage group, P <0.05 or P <0. 01, indicating a wide range of myocardial damage. QRS voltage with the improvement or aggravation of the dynamic changes, so ECG QRS voltage and its changes can be used as an assessment of subacute KK an important indicator of prognosis.