Resolution of tachycardia-induced cardiomyopathy following ablation of verapamil-sensitive idiopathic left ventricular tachycardia.
Few reports have described tachycardia-induced cardiomyopathy secondary to ventricular tachycardia. We present a 12-year-old boy with dilated cardiomyopathy and incessant verapamil-sensitive idiopathic left ventricular tachycardia. Twelve-lead electrocardiogram showed right bundle branch block QRS morphology with superior axis during tachycardia. Electrophysiology study confirmed the diagnosis, and radiofrequency ablation was done and successfully terminated and prevented induction of ventricular tachycardia. During the follow-up period of 18 months, the patient remained free of symptoms and arrhythmia. Three months after ablation, left ventricular ejection fraction improved and cardiac silhouette became normal on chest x-ray.
Arya
A
A
Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Medical Center, Mellat Park, Vali Asr Avenue, Tehran, 1996911151, Iran. dr.arasharya@gmail.com.
Haghjoo
M
M
Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Medical Center, Mellat Park, Vali Asr Avenue, Tehran, 1996911151, Iran.
Davari
P
P
Department of Pediatric Cardiology, Rajaie Cardiovascular Medical Center, Mellat Park, Vali Asr Avenue, Tehran, 1996911151, Iran.
Sadr-Ameli
M A
MA
Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Medical Center, Mellat Park, Vali Asr Avenue, Tehran, 1996911151, Iran.
D002311:Cardiomyopathy, Dilated / Q000209:etiology* / Q000601:surgery*; D017115:Catheter Ablation; D002648:Child; D004562:Electrocardiography; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011690:Purkinje Fibers / Q000601:surgery; D017180:Tachycardia, Ventricular / Q000150:complications* / Q000601:surgery*; D018487:Ventricular Dysfunction, Left / Q000150:complications* / Q000601:surgery*; D014700:Verapamil / Q000627:therapeutic use*
D014700:Verapamil