Treatment of catecholamine-sensitive right ventricular tachycardia by endocardial catheter ablation
- Stevenson, William G.
- Nademanee, Koonlawee
- Weiss, James N.
- Wiener, Isaac
DOIAbstract
AbstractEndocardial catheter ablation with direct current high voltage shocks was performed in a patient with recurrent syncope due to a catecholamine-sensitive ventricular tachycardia that was drug refractory and occurred in the absence of identifiable heart disease. Pace mapping and catheter activation mapping of the spontaneous and isoproterenol-induced ventricular tachycardia located the tachycardia origin in the right ventricular outflow tract. Ablation dramatically reduced spontaneous ventricular tachycardia and ectopic activity (from 50,000 to <100 ectopic beats/ 24 h). The patient has remained symptom free and without ventricular tachycardia recurrence for 3 years. These observations and review of previous studies suggest that cathe...
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