Why the study?
Does percutaneous catheter ablation prevent recurrence of symptomatic tachycardia in a patient with incessant SVT due to a concealed accessory pathway?
Does percutaneous catheter ablation prevent recurrence of symptomatic tachycardia in a patient with incessant SVT due to a concealed accessory pathway?
Direct endocardial recording of accessory pathway potentials may offer the opportunity for successful catheter ablation in patients with incessant SVT.
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Ablation success in this case does not change practice; leaves open generalizability of accessory pathway recording for incessant SVT.
A patient presented with incessant supraventricular tachycardia due to a concealed accessory pathway. The His bundle electrocardiogram showed a large discrete accessory pathway potential following ventricular activation and resulting in retrograde atrial activation. Percutaneous catheter ablation in the region of the accessory pathway potential left nodal conduction intact but prevented retrograde activation of the atria. Symptomatic tachycardia has not recurred. Direct endocardial recording of accessory pathway potentials is rare but may offer the opportunity for catheter ablation.
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Webb et al. (1988) studied this question.
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