心房纤颤(简称房颤)时洋地黄过量所致Ⅲ°传入阻滞及非阵发性房室交界性(简称交界性)心动过速伴文氏型传出阻滞,在临床听诊时似不规则,易为临床及心电图所忽视,但对其识别又有非常重要的临床意义。现将笔者近遇一例介绍如下。患者女,60岁。风心病二尖瓣狭窄并关闭不全已26年,持续房颤21年,坚持服用地高辛0.25mg/日。于1985年5月2同因心慌、气短加重,夜间不能平卧而住院。入院后继续口服地高辛0.25mg/日,症状无好转。心电图示心房纤颤,不完全性右束支并左前分支传导阻滞。4日在心电监护下静注西地 Atrial fibrillation (referred to as atrial fibrillation) caused by excessive digitalis transitional third degree and non-paroxysmal atrioventricular junction (referred to as borderline) tachycardia with Wen’s type block, the clinical auscultation Seems irregular, easy to ignore for clinical and ECG, but its recognition has another very important clinical significance. I will now encounter a case described below. Female patient, 60 years old. Rheumatic mitral stenosis and closed incomplete 26 years, sustained atrial fibrillation for 21 years, insisted on taking digoxin 0.25mg / day. In May 1985 2 the same as palpitation, increased shortness of breath, at night can not be supine and hospitalization. After oral administration of digoxin 0.25mg / day, no improvement in symptoms. ECG shows atrial fibrillation, incomplete right bundle branch and left anterior branch block. On the 4th ECG intravenous injection West