比较冠状动脉狭窄与冠状动脉正常者，其房室传导系统房室顺传及室房逆传的电生理特征。
To evaluate the electrophysiological characteristics of antrograde and retrograde atrioventricular node conduction in the patients with or without coronary artery stenosis.
结果：快径与慢径的顺传ERP有极显著性差异（P＜0．001）。
Results: There existed a significant difference in anterograde ERP of fast and slow pathways(p<0. 001 ).
结论绝大多数在体房室结固有逆传功能明显低于房室顺传，或呈单向传导。
Conclusion Intrinsic atrioventricular conduction ability is poor, representing unidirectional conduction in majority of cases.
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