title: Ventricular fibrillation treated by cryotherapy to the right ventricular outflow tract: a case report.
abstract: BACKGROUND
  Arrhythmias originating from the right ventricular outflow tract are generally considered benign but cases of cardiac arrest have been described, usually associated with polymorphic ventricular tachycardia or extrasystoles with short coupling intervals.
  
  
  METHODS
  We report the case of a 54-year-old Caucasian woman with symptomatic right ventricular outflow tract arrhythmias without structural heart disease who suffered a ventricular fibrillation arrest without prior malignant clinical features. Cryoablation was performed and an implantable cardioverter defibrillator was implanted. She has since been free of arrhythmia for 7 years and has asked that the implantable cardioverter defibrillator not be replaced when the battery becomes depleted.
  
  
  CONCLUSIONS
  Although usually benign, right ventricular outflow tract tachycardia can be life-threatening. Even the most malignant cases can be cured by ablation.
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK.|St Peter's Hospital, Guildford Road, Chertsey, KT16 0PZ, UK.
authors.forename: Paramdeep S
authors.initials: PS
authors.lastname: Dhillon
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK.
authors.forename: Giulia
authors.initials: G
authors.lastname: Domenichini
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK.
authors.forename: Hanney
authors.initials: H
authors.lastname: Gonna
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK.
authors.forename: Anthony
authors.initials: A
authors.lastname: Li
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK.
authors.forename: Nadia
authors.initials: N
authors.lastname: Sunni
authors.affiliation: St Peter's Hospital, Guildford Road, Chertsey, KT16 0PZ, UK.
authors.forename: Michael
authors.initials: M
authors.lastname: Mahmoudi
authors.affiliation: Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, Blackshaw Road, London, SW17 0QT, UK. mark_m_gallagher@hotmail.com.|St Peter's Hospital, Guildford Road, Chertsey, KT16 0PZ, UK. mark_m_gallagher@hotmail.com.|Department of Cardiology, St. Georges Hospital, Blackshaw Road, London, SW17 0QT, UK. mark_m_gallagher@hotmail.com.
authors.forename: Mark M
authors.initials: MM
authors.lastname: Gallagher
mesh_terms: D001145:Arrhythmias, Cardiac / Q000517:prevention & control*; D017115:Catheter Ablation / Q000379:methods*; D017679:Cryotherapy; D017147:Defibrillators, Implantable; D005260:Female; D006801:Humans; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000503:physiopathology / Q000628:therapy*; D016896:Treatment Outcome; D014693:Ventricular Fibrillation / Q000150:complications / Q000503:physiopathology / Q000628:therapy*
keywords: Cardiac arrest; Case report; Cryoablation; Right ventricular outflow tract; Ventricular extrasystole