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本文分析Ⅱ°Ⅰ型ＡＶＢ２４例，结果发现有器质性心脏病的１４例中３例有昏厥、阿斯综合征及／或高度ＡＶＢ，另１例希氏束电图示Ａ－Ｈ延长，阿托品可改善房室传导，但不能使之消失，心电监护出现高度ＡＶＢ，但不能明确有否器质性心脏病。我们认为Ⅱ°Ⅰ型ＡＶＢ的预后与原发病相关；但不包括迷走张力过高所致的Ⅱ°Ⅰ型ＡＶＢ，后者特点是Ⅱ°ＡＶＢ间隙出现，以夜间为多，好发于年轻人，食道电生理及心内电生理有助于鉴别。
In this paper, Ⅱ ° Ⅰ type AVB24 cases, found that 14 cases of organic heart disease in 3 cases have fainting, Asperger’s syndrome and / or high AVB, another case of His bundle beam shows A-H prolongation, Atropine can improve atrioventricular conduction, but can not make it disappear, a high AVB ECG, but can not clearly have any organic heart disease. We believe that the prognosis of type Ⅱ ° Ⅰ AVB is related to the primary disease; however, it does not include Ⅱ ° Ⅰ type AVB caused by excessive vagal tension. The latter is characterized by the appearance of Ⅱ ° AVB gap, People, esophageal electrophysiology and intracardiac electrophysiology help identify.