Tachycardia-induced cardiomyopathy secondary to right ventricular outflow tract ventricular tachycardia: improvement of left ventricular systolic function after radiofrequency catheter ablation of the arrhythmia.
BACKGROUND
Several reports describe development of cardiomyopathies secondary to supraventricular tachycardia. Few reports have described cardiomyopathies secondary to ventricular tachycardia.


RESULTS
We describe a patient who presented with dilated cardiomyopathy and repetitive nonsustained monomorphic ventricular tachycardia. Cardiac catheterization showed hemodynamically insignificant coronary artery disease. Radiofrequency ablation of a right ventricular outflow tract ventricular tachycardia resulted in improvement of the left ventricular systolic function and resolution of heart failure symptoms.


CONCLUSIONS
This report suggests that right ventricular outflow tract ventricular tachycardia may cause reversible tachycardia-induced cardiomyopathy.
Vijgen
J
J
St. Elizabeth Hospital, Youngstown, Ohio, USA.
Hill
P
P
Biblo
L A
LA
Carlson
M D
MD
D000368:Aged; D009202:Cardiomyopathies / Q000209:etiology* / Q000503:physiopathology; D017115:Catheter Ablation; D004562:Electrocardiography; D006801:Humans; D008297:Male; D013599:Systole; D017180:Tachycardia, Ventricular / Q000150:complications* / Q000503:physiopathology / Q000601:surgery; D016277:Ventricular Function, Left; D014694:Ventricular Outflow Obstruction / Q000150:complications* / Q000503:physiopathology