|
Abstract Objective To assess features of slow pathway ablation and long-term efficacy of atrioventricular nodal reentrant tachycardia(AVNRT) without AH jump and tachycardia onset during programmed stimulation. Methods Based on electrophysiological test results, 100 patients with paroxysmal supraventricular tachycardia and no bypass pathway were divided into group A, AH jump followed by AVNRT onset(n=40), group B, AH jump but no AVNRT(n=40 ), and group C, no AH jump and no ANVRT (n=20). Electrophysiological parameters and long-term efficacy were compared between groups. Results AV nodal antegrade conduction Wenckebach periods were prolonged significantly in all patients after ablation(P<0.05). The effective refractory period of AV node shortened significantly after ablation(P<0.05). Junctional rhythmappeared during ablation in all patients. The recurrence rate was similar in all groups during follow-up 12 months. Conclusion Slow pathway ablation is safe and effective for AVNRT without AH jump and inducible tachycardia during programmed stimulation. Junctional rhythmis a marker of effective ablation.
|
|
|
|
|
|
