title: [Electrocardiographic characteristics and radiofrequency catheter ablation results of ventricular tachycardia or premature ventricular contractions originating in the vicinity of atrioventricular annulus].
abstract: OBJECTIVE
  To evaluate the electrocardiographic (ECG) characteristics and results of radiofrequency catheter ablation (RFCA) of idiopathic ventricular tachycardia or premature ventricular contractions (VT/PVCs) originating in the vicinity of atrioventricular annulus.
  
  
  METHODS
  Nineteen patients with idiopathic VT/PVCs underwent conventional electrophysiological study and RFCA were included in this analysis. The 12 leads (ECG) characteristics were also analyzed.
  
  
  RESULTS
  The VT/PVCs were originated in the vicinity of mitral annulus in 10 cases, including anterolateral (n = 5), posterolateral (n = 3) and posteroseptal (n = 2). The VT/PVCs were originated in the vicinity of tricuspid annulus in the rest 9 cases, including the free wall (n = 5) and the septal portion (n = 4). The 12-lead ECG patterns of VT/PVCs originating in the vicinity of atrioventricular annulus were helpful for determine the site of RFCA. The VT/PVCs were successfully eliminated by RFCA in all cases.
  
  
  CONCLUSIONS
  The exact origin of VT/PVCs originating in the vicinity of atrioventricular annulus could be determined by 12-leads ECG analysis and can be successfully and safely cured by RFCA.
authors.affiliation: Department of Cardiology, Wuhan Asian Heart Hospital, Wuhan 430022, China.
authors.forename: Jin-lin
authors.initials: JL
authors.lastname: ZHANG
authors.forename: Xi
authors.initials: X
authors.lastname: SU
authors.forename: Hong-wei
authors.initials: HW
authors.lastname: HAN
authors.forename: Zhen
authors.initials: Z
authors.lastname: LI
authors.forename: Cheng
authors.initials: C
authors.lastname: TANG
authors.forename: Ping
authors.initials: P
authors.lastname: JIANG
authors.forename: Guang-hui
authors.initials: GH
authors.lastname: CHENG
mesh_terms: D000328:Adult; D000368:Aged; D017115:Catheter Ablation / Q000379:methods; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017180:Tachycardia, Ventricular / Q000209:etiology / Q000503:physiopathology* / Q000628:therapy*; D016896:Treatment Outcome; D014261:Tricuspid Valve / Q000503:physiopathology; D018879:Ventricular Premature Complexes / Q000209:etiology / Q000503:physiopathology* / Q000628:therapy*