title: [Preliminary clinical experience on radiofrequency catheter ablation of right-sided accessory pathway guided by Ensite-NavX navigation].
abstract: OBJECTIVE
  To explore the feasibility and methodology of radiofrequency catheter ablation (RFCA) guided by 3D navigation system (Ensite-NavX) for right atrioventricular accessory pathway.
  
  
  METHODS
  Thirty-three cases of right accessory pathway atrioventricular reentrant tachycardia including 16 cases in right free wall, 3 in right middle septum, 14 in right posterior septum; 23 cases of dominant accessory pathway and 10 cases of concealed were treated by RFCA guided by NavX navigation. NavX navigation modeling method or spatial localization method was exploited to locate target positioning.
  
  
  RESULTS
  All patients were successfully ablated without serious complications. Among them, 25 cases were operated without exposure to X-ray, 7 patients were exposed for several seconds to verify catheter position, 1 case in right free wall was ablated under X-ray combined with Swartz sheath ablation.
  
  
  CONCLUSIONS
  Nonfluoroscopy or less fluoroscopy RFCA for right atrioventricular accessory pathway with Ensite-NavX is safe and feasible, modeling or spatial orientation method are helpful to locate the ablation target positioning.
authors.affiliation: Department of Cardiology, Zhejiang Provincial People's Hospital, Hangzhou 310014, China.
authors.forename: Lin-yan
authors.initials: LY
authors.lastname: Qian
authors.forename: Bai-ming
authors.initials: BM
authors.lastname: Qu
authors.forename: Jian-wu
authors.initials: JW
authors.lastname: Yu
authors.forename: Xue-jiang
authors.initials: XJ
authors.lastname: Cen
authors.forename: Qiang
authors.initials: Q
authors.lastname: Xu
authors.forename: Yin-wei
authors.initials: YW
authors.lastname: Hong
authors.forename: Xian-da
authors.initials: XD
authors.lastname: Che
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017115:Catheter Ablation / Q000379:methods*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D025321:Surgery, Computer-Assisted; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000601:surgery*; D055815:Young Adult