Key result
Electrophysiological mapping and ablation demonstrated that a pseudo V-A-V response during ventricular induction was caused by the initiation of atrial tachycardia due to frequency-dependent block.
Population
A 53-year-old man with multiple episodes of paroxysmal supraventricular tachycardia
Design
Case report
Authors
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May prompt consideration of atypical retrograde pathways in long RP SVT; leaves open prevalence and management implications pending larger studies.
Case Report (n=1)
A pseudo V-A-V response during ventricular induction of SVT can occur due to frequency-dependent block, emphasizing the importance of confirming V-A causality to accurately diagnose atrial tachycardia.
Kaneko et al. (2019) conducted a case report in Paroxysmal supraventricular tachycardia (n=1). Electrophysiological studies and catheter ablation was evaluated on Mechanism of tachycardia and activation sequences. Electrophysiological mapping and ablation demonstrated that a pseudo V-A-V response during ventricular induction was caused by the initiation of atrial tachycardia due to frequency-dependent block.