本文报道18例迷走神经性房性心律失常综合征患者,表现为长期(平均9年)发作阵发性心房颤动或心房扑动。男14例,女4例,初次发病年龄平均为43.8岁(25～60岁)。临床上多数患者有心悸表现,且常在夜间或白天休息、消化道异常时发生,而运动或情绪激动时无发作。心电图常显示病理性P波,其中14例(77.8％)常有房内传导异常,表现为P波增宽(0.12秒),Ⅱ、V_2和V_3导联P波双峰以及左、右或双侧心房肥厚的表现;2例房内传导异常不十分明显;仅2例P波正常。窦房结功能检查正常,PR间期平均为155.5毫秒。发作时心电图描记、电生理观察及Holter This article reports 18 patients with vagal atrial arrhythmia syndrome, manifested as long-term (average 9 years) episodes of paroxysmal atrial fibrillation or atrial flutter. There were 14 males and 4 females with an average age of onset of 43.8 years (range 25-60 years). Most patients have palpitations in clinical manifestations, and often rest at night or during the day, gastrointestinal abnormalities occurred, and exercise or emotional excitement. Electrocardiogram often showed pathological P wave, of which 14 cases (77.8%) often had abnormal conduction in the atrium, which showed P wave broadening (0.12 seconds), P wave bimodal in Ⅱ, V_2 and V_3 leads, left and right or double Side of the performance of atrial hypertrophy; 2 cases of room conduction abnormalities is not very clear; only 2 cases of P wave normal. Sinus node function tests were normal, PR interval average of 155.5 milliseconds. Electrocardiogram at onset, electrophysiological observation and Holter