阵发性房室阻滞是一种相对罕见的临床疾病.通常在某些早先存在有希氏束疾病或束支阻滞患者中,由心动过缓或心动过速所激发,提示在希氏束-浦顷野系统中有一频率依赖性(心动过缓或心动过速)阻滞部位.本文报告2例阵发性房室阻滞的患者,阻滞部位局限于房室结,可能是由于迷走神经介导的反应所致.例1,女,21岁.因二年内反复发作8次晕厥和房室阻滞而就诊,其中7次与情绪应激和疼痛有关. Paroxysmal atrioventricular block is a relatively rare clinical disease usually caused by bradycardia or tachycardia in some patients with prior His bundle disease or bundle branch block, suggesting that in the His bundle - Pu are wild system in a frequency-dependent (bradycardia or tachycardia) block sites.This article reports 2 patients with paroxysmal atrioventricular block, the block is limited to atrioventricular node may be due to the vagus nerve Example 1, female, 21 years of age due to repeated episodes within two years of syncope and atrioventricular block and treatment, of which seven were associated with emotional stress and pain.