title: [Efficacy of catheter radiofrequency ablation for the treatment of ventricular arrhythmia storm post cardioverter-defibrillators implantation].
abstract: OBJECTIVE
  To evaluate the acute and long-term effects of catheter radiofrequency ablation for the treatment of ventricular arrhythmia storm (VAS) post implantable cardioverter-defibrillators (ICD) implantation.
  
  
  METHODS
  Acute and long-term effects of catheter radiofrequency ablation for the treatment of VAS post ICD implantation were retrospectively assessed in 11 patients from September 2008 to August 2011.
  
  
  RESULTS
  A total of 15 ablation procedures were performed in 11 patients. Six ablation procedures were performed through epicardial approach. In 9 patients, 20 types of ventricular tachycardia (VT) (including 20% hemodynamically unstable VT) were induced during the procedures [mean cycle length (384 ± 141) ms] and polymorphic ventricular tachycardia were induced in 7 patients. The average X-ray fluoroscopy time and procedural time were (26 ± 17) min and (189 ± 60) min, respectively. Complete success, partial success, and failure rates immediately post catheter radiofrequency ablation were 46.7% (7/15), 26.7% (4/15) and 26.7% (4/15), respectively. All patients are alive at follow-up[(2.45 ± 9.6) months after the last catheter ablation] and the complete success, partial success, and failure rates during follow-up were 72.7% (8/11), 9.1% (1/11) and 18.2% (2/11), respectively.
  
  
  CONCLUSIONS
  VAS can be effectively treated by catheter radiofrequency ablation in patients post ICD implantation.
authors.affiliation: Department of Cardiology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
authors.forename: Yu-min
authors.initials: YM
authors.lastname: Sun
authors.forename: Jin-bo
authors.initials: JB
authors.lastname: Yu
authors.forename: Ming-long
authors.initials: ML
authors.lastname: Chen
authors.forename: Bing
authors.initials: B
authors.lastname: Yang
authors.forename: Feng-xiang
authors.initials: FX
authors.lastname: Zhang
authors.forename: Fa-rong
authors.initials: FR
authors.lastname: Shen
authors.forename: Zhi-jun
authors.initials: ZJ
authors.lastname: Wang
authors.forename: Wei-zhu
authors.initials: WZ
authors.lastname: Ju
authors.forename: Hong-wu
authors.initials: HW
authors.lastname: Chen
authors.forename: Ya-zhou
authors.initials: YZ
authors.lastname: Lin
authors.forename: Ke-jiang
authors.initials: KJ
authors.lastname: Cao
mesh_terms: D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017180:Tachycardia, Ventricular / Q000209:etiology / Q000601:surgery*; D016896:Treatment Outcome