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为探讨冠状动脉病变与QTc离散度（QTcd）关系，分析129例冠脉造影者体表心电图。结果显示冠状动脉病变组比冠脉正常组QTcd显著增大；冠脉狭窄＞75％组比冠脉狭窄＞50％＜75％组QTcd显著增大；双大病变组比单支病变组QTcd增大；三支病变组比双支病变组QTcd显著增大；而左冠病变组与右冠病变组相比QTcd无显著差异。提示QTcd与冠状动脉狭窄程度及病变受累支数相关。
To investigate the relationship between coronary artery lesions and QTc dispersion (QTcd), 129 cases of coronary angiography on the body surface electrocardiogram were analyzed. The results showed that the QTcd of coronary lesion group was significantly higher than that of the normal coronary artery group; the QTcd of coronary lesion group was significantly higher than that of coronary artery stenosis> 75% and 75% The QTcd of three lesion group was significantly higher than that of double vessel lesion group, while there was no significant difference between left coronary lesion group and right coronary lesion group. Tip QTcd and degree of coronary artery stenosis and lesion involvement count related.