title: Don't move during ablation of atrial fibrillation!
abstract: BACKGROUND
  Restless patient is recalcitrant during ablation of atrial fibrillation (AF). We aimed to assess the association between patient movements during AF ablation and its outcome.
  
  
  METHODS
  We examined the body movement during AF ablation in 78 patients with the use of a novel portable respiratory monitor, the SD-101, which also has the ability to quantify the frequency of body movements.
  
  
  RESULTS
  The body movement index, defined as the number of the units of time with body movement events divided by the recording time (11.4 ± 6.5 events/h), was significantly correlated with the ablation time defined as the time from the first point of the ablation to the end of the procedure (1.2 ± 0.3h) (r=0.35; p=0.0014) and a total radiofrequency energy applied (56.6 ± 17.7 kW) (r=0.36; p=0.0015). A multiple linear regression analysis showed that non-paroxysmal AF (β=0.25; p=0.036) and the body movement index (β=0.36; p=0.0019) were independent determinants of the ablation time. The body movement index was similar in patients with and without recurrence of AF.
  
  
  CONCLUSIONS
  Keeping patients motionless may be important to reduce the procedural duration of AF ablation.
authors: Department of Cardiology, Cardiovascular Center, Nagoya Daini Red Cross Hospital, Nagoya, Japan; Department of Cardiology, Graduate School of Medicine, Hiroshima University, Hiroshima, Japan. Electronic address: rjrgw059@ybb.ne.jp.
authors: Akinori
authors: A
authors: Sairaku
authors: Department of Cardiology, Cardiovascular Center, Nagoya Daini Red Cross Hospital, Nagoya, Japan.
authors: Yukihiko
authors: Y
authors: Yoshida
authors: Department of Cardiology, Cardiovascular Center, Nagoya Daini Red Cross Hospital, Nagoya, Japan.
authors: Haruo
authors: H
authors: Hirayama
authors: Department of Cardiology, Graduate School of Medicine, Hiroshima University, Hiroshima, Japan.
authors: Yukiko
authors: Y
authors: Nakano
authors: Department of Clinical Laboratory, Nagoya Daini Red Cross Hospital, Nagoya, Japan.
authors: Noriaki
authors: N
authors: Kondo
authors: Department of Cardiology, Graduate School of Medicine, Hiroshima University, Hiroshima, Japan.
authors: Yasuki
authors: Y
authors: Kihara
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D017115:Catheter Ablation / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000295:instrumentation / Q000379:methods*; D009068:Movement / Q000502:physiology*; D016896:Treatment Outcome
keywords: Ablation time; Atrial fibrillation; Body movement; Pressure sensor; SD-101; Total radiofrequency energy