房室结折返性心动过速(AV node re-entrant tachycardia,AVNRT)为最常见的阵发性室上性心动过速(PSVT),约占全部PSVT病例的60～70%[1、2]。AVNRT的发生与房室结内存在有双径道有关。我们用食道心房调搏检查18例PSVT患者,共查出房室结内双径道12例,其中8例诱发出室上性心动过速。因其他原因做食道心房调搏检查者32例,查出双径道2例。提 AV node reentrant tachycardia (AVNRT) is the most common paroxysmal supraventricular tachycardia (PSVT), accounting for 60-70% of all cases of PSVT [1, 2] . The occurrence of AVNRT is related to the existence of dual pathways in the AV node. We use esophageal atrial pacing 18 cases of PSVT patients found a total of 12 cases of atrioventricular nodal pathways were found, of which 8 cases induced supraventricular tachycardia. 32 cases of esophageal atrial pacing for other reasons, found in 2 cases of dual pathways. mention