Key result
Radiofrequency catheter ablation successfully eradicated premature ventricular contractions originating from the right ventricular outflow tract, preventing the recurrence of polymorphic ventricular tachycardia and syncope over a 20-month follow-up.
Case Report (n=1)
No
Radiofrequency catheter ablation of a triggering RVOT PVC successfully prevented recurrence of polymorphic ventricular tachycardia and syncope in a patient without structural heart disease.
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Suggests PVC ablation as option in idiopathic polymorphic VT with syncope; hypothesis-generating pending prospective validation.
Ventricular tachycardia originating from the right ventricular outflow tract (RVOT) is considered benign, but sometimes it causes polymorphic ventricular tachycardia and ventricular fibrillation, resulting in sudden cardiac death. A 58-year-old woman without structural heart disease was admitted for evaluation of recurrent episodes of syncope. Surface ECG showed frequent repetitive premature ventricular contraction (PVC) of RVOT origin. Polymorphic ventricular tachycardia triggered by the same PVC was documented by Holter ECG during an episode of syncope. Radiofrequency catheter ablation was performed to eradicate this PVC. No polymorphic ventricular tachycardia has developed after the procedure, and the patient has had no recurrence of syncope.
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Uemura et al. (2008) conducted a case report in Polymorphic ventricular tachycardia triggered by premature ventricular contraction from the right ventricular outflow tract (n=1). Radiofrequency catheter ablation was evaluated on Recurrence of polymorphic ventricular tachycardia and syncope. Radiofrequency catheter ablation successfully eradicated premature ventricular contractions originating from the right ventricular outflow tract, preventing the recurrence of polymorphic ventricular tachycardia and syncope over a 20-month follow-up.
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