title: [Association of an epsilon wave and syncope].
abstract: BACKGROUND
  Epsilon waves, rarely observed in clinical practice, result from late potentials favoring the development of ventricular rhythm disorders by reentry.
  
  
  METHODS
  A 53-year-old man with sequellar myocardial infarction experienced a syncope. The surface ECG recorded an epsilon wave. Programmed ventricular stimulation before and after anti-arrhythmia drugs triggered ventricular tachycardia which was hemodynamically poorly tolerated. A defibrillator was implanted and confirmed retrospectively the rhythmic origin of the syncope.
  
  
  CONCLUSIONS
  The association of an epsilon wave and syncope should guide the etiology search towards severe ventricular rhythm disorders such as ventricular tachycardia. An electophysiologic study is required in order to determine the appropriate therapy and thus help avoid possibly fatal recurrence.
authors.affiliation: Service de Cardiologie et des Urgences cardio-vasculaires, hôpital de Meaux.
authors.forename: M
authors.initials: M
authors.lastname: Aldakar
authors.forename: H
authors.initials: H
authors.lastname: Perchet
authors.forename: R
authors.initials: R
authors.lastname: Coutte
authors.forename: J
authors.initials: J
authors.lastname: Dauptain
authors.forename: J F
authors.initials: JF
authors.lastname: Lefort
authors.forename: P
authors.initials: P
authors.lastname: Charon
mesh_terms: D002304:Cardiac Pacing, Artificial; D017147:Defibrillators, Implantable; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis* / Q000503:physiopathology; D012815:Signal Processing, Computer-Assisted; D013575:Syncope / Q000209:etiology* / Q000517:prevention & control; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy
vernacular_title: Association d'une onde epsilon et d'une syncope.