我们知道心脏的传导系主要包括窦房结、房室结、房室束、左右束支及其室内分支。窦房结是心脏的起步点,冲动由窦房结发生后如何传至房室结和左、右心房的问题,一般认为冲动是由窦房结放射状沿心房肌肉本身传导,心房内并无特殊的传导束,这也是现在心电图学的一般概念。但这个问题自从1906年田原氏发现房室结和1907年Keith和 We know that the heart’s conduction system mainly includes the sinus node, atrioventricular node, atrioventricular bundle, left and right bundle branch and its indoor branch. Sinus node is the starting point of the heart, the impulse from the occurrence of the sinus node to the atrioventricular node and the left and right atrium, the general impulse is from the sinus node radial conduction along the atrial muscle itself, there is no special atrial The conduction beam, which is now the general concept of electrocardiography. But this problem has been discovered in 1906 by Taguchi’s atrioventricular node and 1907 Keith and