心房脱节(Atrial dissociation)是一个心电图诊断。它的特点是心房的某一局限部分与心房的共余部分分别被两个独立的、互不干扰的节律点所激动[8,11]。一般说来,心房的某一局限部分被异位节律点控制,而心房的其余部分则被窦房结控制[6,7]。在心房脱节中,异位房性节律点的冲动绝不下传到心室[1,3,5,6,8,10,11]。心房脱节在心电图上的表现是出现两组独立的心房P波[10]。一组是基本节律,规律,和QRS波群有固定关系,常是窦房结发放冲动激动心房而成[6];另一组P波和基本节律P波 Atrial dissociation is an electrocardiographic diagnosis. It is characterized by a limited part of the atrium and the rest of the atrium excited by two independent, non-interfering rhythms, respectively [8,11]. In general, some limitations of the atrium are controlled by ectopic rhythm points, while the rest of the atrium is controlled by the sinoatrial node [6,7]. In the atrial dislocation, the impulse of the ectopic atrial rhythm point must not be transmitted to the ventricle [1,3,5,6,8,10,11]. Atrial dislocation in the performance of the ECG is the emergence of two independent atrial P wave [10]. A group is the basic rhythm, regular, and QRS wave group has a fixed relationship, often issued atrial sinus node stimulation impulsive atrial [6]; another group of P wave and basic rhythm P wave