传统心电图概念中,房室同步有着全或无的特点,或呈房室同步或呈房室分离。近年来对房室同步病理生理的新认识产生了房室不良同步的新概念。[定义]房室不良同步是指房室之间虽然处于同步状态,即每个心动周期中都是P波在前QRS波在后(房前室后),但要达到良好同步还需二者间有一良好的时间间期。当PR间期为120~200ms时最佳,属于良好同步,其使心房辅助泵的作用达到最佳状态(图1A)。 In the traditional concept of ECG, atrioventricular synchronization with or without characteristics, or was atrioventricular or ventricular septal separation. In recent years, a new understanding of atrioventricular synaptic pathophysiology has produced a new concept of atrioventricular dystrophy. [Definition] Poor atrioventricular synchronization refers to although the atrioventricular synchronization between the state, that is, each cardiac cycle in the P wave before the QRS wave in the back (room before the room), but to achieve good synchronization also need both There is a good time period between. When the PR interval of 120 ~ 200ms best, belong to a good synchronization, which makes the role of atrial auxiliary pump to achieve the best condition (Figure 1A).