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.
Department of Electrophysiology, CARE Institute of Medical Sciences, Hyderabad, India.
Masilamani Lawrance
ML
Jesuraj
B Hygriv
BH
Rao
K
K
Sharada
C
C
Narasimhan
D003937:Diagnosis, Differential; D004558:Electric Stimulation / Q000379:methods*; D004568:Electrodiagnosis / Q000379:methods*; D006334:Heart Function Tests / Q000379:methods*; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000150:complications / Q000175:diagnosis* / Q000601:surgery*; D016896:Treatment Outcome; D014694:Ventricular Outflow Obstruction / Q000150:complications / Q000175:diagnosis* / Q000601:surgery*; D055815:Young Adult