心脏传导系统包括窦房结、房室结、希氏束、右束支和左束支(前、后分支)。窦房结与正常冲动的形成有关,而其他结构为冲动由心房序贯传导至心室所必需。在传导时,窦性激动可在这些传导组织的任何部位被阻滞,而产生房室或室内传导障碍。阻滞的重 Cardiac conduction system includes the sinoatrial node, atrioventricular node, His bundle, right bundle branch and left bundle branch (anterior and posterior branches). Sinus node and the formation of normal impulse, while other structures necessary for impulse conduction from the atrium to the ventricle. Sinusitis can be blocked at any part of these conductive tissues during conduction, resulting in atrioventricular or intra-ventricular conduction disturbances. Blocking weight