title: Successful radiofrequency catheter ablation of ventricular tachycardia originating from underneath the mechanical prosthetic aortic valve.
abstract: A 67-year-old man who developed sustained ventricular tachycardia (VT) 4 years after a prosthetic aortic valve replacement, underwent electrophysiologic testing and catheter ablation. The mechanism of the VT was suggested to be triggered activity because the VT could be induced by programmed ventricular stimulation, and burst ventricular pacing demonstrated overdrive suppression without a transient entrainment. Successful catheter ablation using a transseptal approach was achieved underneath the mechanical prosthetic aortic valve on the blind side for that approach. This case demonstrated that catheter mapping and ablation of the entire LV using a transseptal approach might be possible.
authors.affiliation: Division of Cardiovascular Disease, Cardiac Rhythm Management Laboratory, University of Alabama at Birmingham VH B147, 1670 University Boulevard, 1530 3rd AVE S, Birmingham, AL 35294, USA. takumi-y@fb4.so-net.ne.jp
authors.forename: Takumi
authors.initials: T
authors.lastname: Yamada
authors.forename: H Thomas
authors.initials: HT
authors.lastname: McElderry
authors.forename: Harish
authors.initials: H
authors.lastname: Doppalapudi
authors.forename: G Neal
authors.initials: GN
authors.lastname: Kay
mesh_terms: D000368:Aged; D001011:Aorta / Q000601:surgery*; D018780:Body Surface Potential Mapping / Q000379:methods*; D017115:Catheter Ablation / Q000379:methods*; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000601:surgery*; D016896:Treatment Outcome