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窦房结的激动如何传送给心房和房室结,自Lewis于1910年提出放散传播(radial-spread)学说以来,一直有不同看法。近年来有人提出窦房结和房室结之间存在着特殊的心房细胞,称为结间束(internodal tracts),窦房结的激动经此途径传给心房和房室结。但此途径是否存在,看法并不一致。心房内的传导对窦房和房室传导的关系究竟如何,更不清楚。我们观察到2例特殊类型的房内传导阻滞并影响到窦房结的传出和房室传导,现予分析报道,以期对阐明窦房和房室传导之间的关系有所启迪。
How sinus node activation is delivered to the atria and atrioventricular node has been different since Lewis proposed the theory of radial-spread in 1910. In recent years, it has been suggested that there is a special atrial cell between the sinus node and the atrioventricular node, called internodal tracts. The activation of the sinus node is transmitted to the atria and atrioventricular node through this pathway. However, this approach exists, the views are not consistent. What is the relationship between atrial conduction and sinoatrial and atrioventricular conduction, more unclear. We observed 2 cases of special types of conduction block in the room and affect the transmission of the sinus node and atrioventricular conduction is analyzed and reported to elucidate the relationship between the sinoatrial and atrioventricular conduction.