Pahlajani D B, Miller R A, Serratto M
Am Heart J. 1975 Aug;90(2):165-71. doi: 10.1016/0002-8703(75)90116-7.
In this study, intracardiac electrograms were performed in 20 children--ranging in age from eight months to 18 years and without evidence of conduction disturbances on the scalar electrocardiogram--to determine the normal conduction patterns, response to atrial pacing, and values of refractory periods. Atrial pacing--18 cases--induced a prolongation al AH on increasing heart rates in all; 11 developed Wenckebach block proximal to the bundle of His at the mean pacing rate of 224 per minute +/- 45 (1 S.D.). Refractory periods were shorter than in adults. Study of the pattern of A-V conduction revealed three types of response: (1) the atrium was the limiting structure in 11 cases; (2) the delay occurred in the A-V node only in four cases; and (3) the delay occurred both in the A-V node and His-Purkinje system. This response was observed in one case only.
在本研究中，对20名年龄从8个月至18岁、体表心电图无传导障碍证据的儿童进行了心内心电图检查，以确定正常传导模式、对心房起搏的反应以及不应期值。18例心房起搏患者在心率增加时均出现AH间期延长；11例在平均起搏频率为每分钟224次±45次（标准差）时，在希氏束近端发生文氏阻滞。不应期比成人短。对房室传导模式的研究揭示了三种反应类型：（1）11例中，心房是限制结构；（2）仅4例延迟发生在房室结；（3）延迟同时发生在房室结和希氏-浦肯野系统，仅在1例中观察到这种反应。
