Key result
Radiofrequency ablation targeting a discrete pathway potential at the left anterolateral mitral annulus successfully eliminated antidromic AVRT, with the patient remaining asymptomatic at 1 year.
Why the study?
Left-sided atrioventricular accessory pathways with long anterograde conduction time are uncommon causes of wide-QRS tachycardia.
Population
A 21-year-old woman with recurrent wide-QRS tachycardia
Design
Case report
Follow-up
1-year
Authors
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May aid recognition of atypical APs in wide-QRS tachycardia without pre-excitation; leaves open optimal diagnostic and ablation strategies.
Case Report (n=1)
Left-sided accessory pathways with long conduction time can mediate antidromic AVRT and can be successfully treated by targeting a discrete pathway potential during ablation.
Park et al. (2025) conducted a case report in Antidromic atrioventricular re-entrant tachycardia (n=1). Radiofrequency ablation was evaluated on Elimination of accessory pathway potential and noninducibility of tachycardia. Radiofrequency ablation targeting a discrete pathway potential at the left anterolateral mitral annulus successfully eliminated antidromic AVRT, with the patient remaining asymptomatic at 1 year.
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