Repetitive monomorphic ventricular tachycardia of left coronary cusp origin |
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Authors: | Sadanaga T Saeki K Yoshimoto T Funatsu Y Miyazaki T |
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Affiliation: | Department of Cardiology, Tokyo Dental College Ichikawa General Hospital, Ichikawa City, Chiba, Japan. |
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Abstract: | Repetitive monomorphic ventricular tachycardia with a morphology of inferior axis and left bundle branch block pattern in patients without structural heart disease commonly originates from the right ventricular outflow tract. We report the case of a 22-year-old man with an incessant, monomorphic ventricular tachycardia with a similar morphology originating from the left coronary cusp, which was confirmed by perfect pace mapping, local ventricular activation preceding the onset of QRS by 25 mse, and eliminated by a single delivery of low-energy (11 W) radiofrequency currents. |
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Keywords: | ventricular tachycardia catheter ablation right ventricular outflow tract left ventricular outflow tract coronary cusp |
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