1910年,Lewis将室上性激动下传心室时因遇到心室内不应期的干扰,出现室内传导异常,心电图上呈现宽大畸形的QRS波群,命名为“心室内差异性传导”或“心室内迷路(迷走)传导”。1963年,Shamroth等又将“室内差异性传导”分为“相性和非相性”两类。随着电生理学进展,Rosenbuum 1972年,又提出了“3相和4相阻滞”,并用“3相和4相阻滞”来解释间歇性或频率依赖性束支及其分支、房室等传导障碍,认为这种传导障碍在传导系统有病变的情况下更易发生。 In 1910, Lewis suffered from ventricular refractory period interference in the supraventricular activation of the ventricle, resulting in abnormalities in the conduction of the interior. The ECG showed a broad malformed QRS complex named “ventricular differential conduction” or “ Ventricular labyrinth (vagal) conduction. ” In 1963, Shamroth et al divided “indoor differential conduction” into two categories: “phase and phase”. With the progress of electrophysiology, Rosenbuum again proposed “3-phase and 4-phase retardation” in 1972 and used “3-phase and 4-phase blockade” to explain intermittent or frequency-dependent bundle branches and their branches, atrioventricular Conductive disorders are considered to be more likely to occur if the conduction system is impaired in the conduction system.