Key result
High-frequency proximal pulmonary artery stimulation successfully induces RVOT tachycardia when conventional protocols fail.
Why the study?
Noninducibility of idiopathic right ventricular outflow tract ventricular tachycardia poses a major challenge in mapping and ablation.
Does high-frequency stimulation of the proximal pulmonary artery induce tachycardia in patients with noninducible idiopathic right ventricular outflow tract tachycardia?
Case Report (n=1)
Does high-frequency stimulation of the proximal pulmonary artery induce tachycardia in patients with noninducible idiopathic right ventricular outflow tract tachycardia?
High-frequency stimulation of the proximal pulmonary artery may be an effective alternative approach to induce idiopathic right ventricular outflow tract tachycardia when conventional protocols fail.
May warrant consideration as an alternative induction approach in refractory cases; leaves open the need for systematic evaluation.
Idiopathic Right Ventricular Tract Outflow Tachycardia Induced by High‐Frequency Stimulation. Ventricular tachycardia arising from the right ventricular outflow tract is one of the common forms of idiopathic ventricular tachycardia. One of the major challenges in mapping and ablation of idiopathic right ventricular outflow tract ventricular tachycardia is noninducibility. Direct stimulation of sympathetic nerves innervating the right ventricular outflow may provide an alternative approach to induce arrhythmia. We report a case of idiopathic right ventricular outflow tract tachycardia in whom tachycardia was noninducible by aggressive conventional stimulation protocols, which was induced by high‐frequency stimulation of proximal pulmonary artery and was successfully ablated. (J Cardiovasc Electrophysiol, Vol. 24, pp. 221‐223, February 2013)
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Jesuraj et al. (2012) conducted a case report in Idiopathic right ventricular outflow tract tachycardia (n=1). High-frequency stimulation of proximal pulmonary artery vs. Aggressive conventional stimulation protocols was evaluated on Induction of tachycardia. High-frequency stimulation of the proximal pulmonary artery successfully induced idiopathic right ventricular outflow tract tachycardia that was noninducible by conventional stimulation protocols.
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