title: Catheter ablation of premature ventricular contractions arising from the mitral annulus after mitral valvoplasty.
abstract: A 57-year-old man undergoing mitral valvoplasty underwent catheter ablation of symptomatic premature ventricular contractions (PVCs) with a right bundle branch block and right inferior axis QRS morphology. Left ventriculography revealed a normal left ventricular function and visualized the anatomical relationships between the left ventricular outflow tract and the mitral annuloplasty ring. Electroanatomic mapping during the PVCs revealed a centrifugal activation pattern arising from the mitral annulus, and the PVCs were likely to be idiopathic. Successful radiofrequency ablation was achieved at the site close to the antero-paraseptal end of the mitral annuloplasty ring, which was located adjacent to the fibrous trigone.
authors: Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294-0019, USA. takumi-y@fb4.so-net.ne.jp
authors: Takumi
authors: T
authors: Yamada
authors: H Thomas
authors: HT
authors: McElderry
authors: Harish
authors: H
authors: Doppalapudi
authors: Andrew E
authors: AE
authors: Epstein
authors: Vance J
authors: VJ
authors: Plumb
authors: G Neal
authors: GN
authors: Kay
mesh_terms: D017115:Catheter Ablation / Q000379:methods*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D016896:Treatment Outcome; D018879:Ventricular Premature Complexes / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery*