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对42例房室折返型心动过速作电生理检查发现7例有多条房室旁道。主要表现为右室程序刺激或心动过速时逆传 A 顺序改变或体表 ECG 预激波方向变化。心动过速时心室期前刺激有助于揭示“旁观”的旁道。
42 cases of atrioventricular reentrant tachycardia for electrophysiological examination found that there were 7 cases of atrioventricular bypass. The main manifestations of right ventricular procedures or tachycardia reverse A sequence change or surface ECG pre-shock direction changes. Premature ventricular stimulation when tachycardia helps to reveal the bystander bypass.