心房脱节

Atrial Dissociation

报告５例心房脱节，多发生于器质性心脏病人，常见诱因为洋地黄中毒，发生机理为两个心房节律点之间存在动力性双向传导阻滞。建议将心房脱节分为４型：①两套并行的心房节律；②一为窦性或结性节律，另一为房速、房扑或颤房，③一为房颤，另一为房扑或房速，④三套或更多的心房节律。

ive casess of atrial dissociattion were reported. They often occurred in patients with organic heart diseaase. The precipitating cause was digitalis intoxication. The postulated mechanism was the presence of dynamic bidirectio nal block between two atrial automatic foci. It is suggested that the atrial diss-ociation may be classified into four type:1, two parasystolic atrial rhythms ,2, sinus or nodal rhythm dissociated with atrial tachycardia, fibrillation or flutter, 3,atrial fibrillation dissociated with flutter or tachycardia,4, three or more atrial rhythms dissociated each other.