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We report a case of a 63-year-old man with incessant ventricular tachycardia (VT) who was treated by left ventricular (LV) mapping and radiofrequency catheter ablation. The ablation procedure was complicated since the patient had undergone aortic prosthetic valve surgery before. Left ventricular catheterization through the mechanical aortic valve is not routinely performed because of the risks involved as they may damage or ‘jam the occluder’. In our patient ablation of ventricular tachycardia was achieved via transseptal approach and through the mitral valve. During the follow-up period of two years, the patient remained free from implantable cardioverter deﬁbrillator shocks.
Keywords: Catheter ablation; left heart catheterization through a transmitral approach; mechanical prosthetic aortic valve; ventricular tachycardia