Case report: an unstable wide QRS complexes tachycardia after ablation of a poster-septal accessory pathwayWhat is the mechanism?
Conclusion:It was an atypical atrial-ventricular node reentrant tachycardia with right bundle branch block. Reasonable analysis based on electrophysiological electrophysiologic knowledge was the basis of successful diagnosis and treatment.
Introduction:
Differentiation of wide QRS complex tachycardia required repeated electrophysiological stimuli and mapping. However, instability of tachycardia would increase the difficulty in differential diagnosis.
Symptoms and Clinical findings:
In this paper, we reported a wide QRS tachycardia following ablation of an atrioventricular reentrant tachycardia participated by a poster-septal accessory pathway. Limited differentiation strategy was performed because the wide QRS tachycardia was self-limited and with unstable hemodynamics. We analyzed the mechanism of the wide QRS tachycardia by only 4 beats ventricular overpacing. On the basis of the last ventricular pacing, an atypical atrioventricular nodal reentrant tachycardia was confirmed.
Intervention and Outcomes:
After slow-pathway modification, the wide QRS tachycardia was eliminated.
Conclusion:
It was an atypical atrial-ventricular node reentrant tachycardia with right bundle branch block. Reasonable analysis based on electrophysiological electrophysiologic knowledge was the basis of successful diagnosis and treatment.
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
More News: Internal Medicine