房室结加速传导对房室折返性心动过速诱发方式的影响

Influence of Inducement of enhanced atrioventricular nodal con- duction to atrioventricular reentrant tachycardia

为探讨房室结加速传导对房室折返性心动过速的影响,对27例突发突止的心悸患者作食管心房调搏检查.结果有9例患者具有房室结加速传导,S-R间期仅轻度延长.诱发出室上性心动过速的方法与无房室结加速传导患者具有完全不同的刺激方式.认为当食管心房调搏起搏频率≥200次/min;房室仍是1:1传导,应采取连续期前收缩刺激或Burst刺激,以促发心动过速,防止遗漏房室折返性心动过速诊断.

To study curative effect of enhanced atrioventricular nodal conduction (EAVNC) in atrioventricular reentrant tachycardia (AVRT) 9 cases with EAVNC and S - R intervals slight prolongation were found in 27 cases tachycardia by transesophageal electrophysiological examination(TEAP) methods of induced tachycardia was different between 9 cases above and those with no EAVNC. It is suggested that stimulation of continuous premature contraction or Burst can induce tachycardia and prevent misdiagnosis of AVRT, when TEAP performed≥ 200 blpm, A - V conduction is 1 : 1.