复极的跨室壁离散是指同一部位不同层次心肌之间的复极差异,该概念的提出是近年来心律失常机制研究的重大突破。心室存在三层心肌细胞,即心内膜、中层(M层)、心外膜。如图所示,各种离子通道在心室三层心肌细胞的分布明显不同,构成了生理条件下跨室壁的复极离散,但其 Reversible transmural dispersion refers to the same site different levels of myocardial repolarisation differences, the concept of the proposed arrhythmia mechanism in recent years a major breakthrough. There are three ventricular myocardial cells, namely the endocardium, middle (M layer), epicardium. As shown in the figure, the distribution of various ion channels in the three layers of ventricular cardiomyocytes is significantly different, constituting the repolarization dispersion across the wall under physiological conditions, but