经食管心电图测量冠状动脉粥样硬化性心脏病患者左房室间期的临床研究

Clinical study on transesophageal electrocardiogram for measuring left atrioventricular interval in patients with coronary artery disease

目的探讨冠状动脉粥样硬化性心脏病(简称冠心病)患者中出现左房室(AR)间期异常的机制及临床意义。方法选取确诊为冠心病的患者48例,根据食管心电图测量的AR间期分为AR间期缩短组(AR≤100ms)与AR室间期正常组(AR>100ms),比较两组的临床特征、心脏彩超以及冠脉病变情况。结果 AR≤100ms组患者年龄高于AR>100ms组(P=0.018);右冠状动脉病变的比例,AR≤100ms组高于AR>100ms组(P=0.038);AR≤100ms组左心房内径较AR>100ms组增大(P=0.041)。结论冠心病患者存在心脏电传导的异常,AR≤100ms的冠心病患者多为右冠状动脉病变。

Objective To explore the mechanism and clinical significance of left atrioventricular interval abnormality in the patients with coronary artery disease. Methods A total of 48 patients with coronary artery disease were selected and divided into the left interval atrioventricular shortening group（AV≤100 ms） and the left atrioventricular interval normal group（AR〉100 ms） according to the left atrioventricular interval measured by the esophageal electrocardiogram. The clinical features, cardiac echocar- diography and coronary vessel lesions were compared between the two groups. Results The age in the AR≤100 ms group was higher than that in the AR〉10 ms group（P=0. 018） ;the proportion of right coronary arterial lesion in the AR ≤ 100 ms group was higher in that in the AR〉10ms group（P=0.038） ;the left atrial diameter in the AR ≤100ms group was enlarged compared with that in the AR〉100 ms group（P=0. 041）. Conclusion The cardiac electric transduction abnormality exists in the patients with coronary heart disease,the majority of the patients with left atrioventricular interval shortening have the right coronary artery lesion.