晚近期电生理的研究表明,激动从窦房结到房室结的传导较普通心房肌的传导快得多,显微组织解剖已证明从窦房结到房室结存在着三条传导通路即结间束,而左、右心房之间尚存在着房间传导束.结间束有三条即前结间束、中间结间束和后结间束,在传导激动时,三条传导并非同时传导,有先有后,一般前结间束是优先通道。至于结间束的传导阻滞理论上与房室传导阻滞一样,应当存在.但直到1976 Late recent electrophysiological studies have shown that the activation of the conduction from the atrial node to the atrioventricular node conduction is much faster than normal atrial muscle, the anatomy of the microstructure has been demonstrated from the sinoatrial node to the atrioventricular node there are three conduction path junction Between the left and right atria, there is still room conduction beam. There are three intercostal bundle between the anterior junction, the middle junction and the posterior junction bundle, conduction conduction, the three conduction is not simultaneous conduction, there are First, after the general before the end of the bundle is the priority channel. As for the conduction block of the intercostal bundle, it should theoretically be the same as atrioventricular block, but until 1976