过早搏动(简称早搏)又称期前收缩。早搏可以偶尔发生,亦可频繁出现;可以不规律地发生,亦可在一个或两个正常心搏之后规律地出现,而成二联律或三联律。早搏可以是多源性,也可以是单源性。早搏分房性、室性和房室交界性三种。一、早搏的病因早搏的病因基础,一是心肌中存在的各种因素,二是神经功能因素的影响,二者往往相互关 Premature beat (referred to as premature beats), also known as premature contraction. Premature beats can happen occasionally, and can occur frequently; they can occur irregularly and can occur regularly after one or two normal beats to form a dual or triple action. Premature beats can be multi-source, it can be single source. Premature beating sex, ventricular and atrioventricular junctional three. First, the etiology of premature beats The etiology of premature beats, one is the existence of a variety of factors in the myocardium, the second is the impact of neurological factors, the two are often inter-related