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预激综合征患者不论旁道位于左侧还是右侧,常可发生顺向型房室折返性心动过速。心动过速的折返环路中,正常的房室传导系统为房室间的前传支,旁道为房室间的逆传支,心房和心室都是折返环的必需成分。顺向型房室折返性心动过速时的心室除极顺序正常,QRS波时限<0.11s,属于窄QRS波心动过速。心动过速时的RR间期为下述两个间期之和:①AV间期(PR间期):从P波开始到R波开始,代表房内传导时间、房室结传导时间、希浦系传导时间三者之和,称为房室前向传导时
Wolff-Parkinson’s syndrome patients regardless of whether the bypass is located on the left or right, often can occur in atrioventricular reentrant tachycardia. Tachycardia in the reentry circuit, the normal AV conduction system for anterior chamber anterior branch, bypass pathway for the antrioventricular anterior branch, the atrium and ventricular reentrant ring are essential components. Forward ventricular reentrant tachycardia ventricular depolarization sequence normal, QRS wave limit <0.11s, is a narrow QRS tachycardia. The RR interval during tachycardia is the sum of the following two intervals: ① AV interval (PR interval): from the beginning of P wave to the beginning of R wave, it represents the conduction time of the atrium, the conduction time of AV node, Department of conduction of the sum of the three, known as the anterior chamber conduction