一.概述1975年,Fontaine等[1]首次提出逆向型房室折返性心动过速的概念。根据预激综合征时折返环路前传支与逆传支的不同,将预激折返性心动过速分成顺向型和逆向型房室折返性心动过速。逆向型AVRT以旁道为前传支,以房室结和正常房室传导系统或另外的旁道为逆传支,折返连续发生时形成预激性心动过速,属于宽QRS波心动过速中的少见类型。逆向 I. Overview In 1975, Fontaine et al [1] first proposed the concept of reverse atrioventricular reentrant tachycardia. According to pre-excitation syndrome reentrant loop pre-transfer and reverse transfer of different, the pre-reentry tachycardia into cis and reverse atrioventricular reentrant tachycardia. Reverse type AVRT bypass to the anterior descending branch to the atrioventricular node and the normal atrioventricular conduction system or another bypass for the retrograde branch, reentry occurs when the formation of pre-excitation tachycardia, wide QRS tachycardia The rare type. Reverse