title: Prevalence of Intraventricular Conduction Disturbances in a Large French Population.
abstract: BACKGROUND
  Recommendations for the interpretation of electrocardiogram have been published in 2009. The aim of this study was to define the prevalence of intraventricular conduction disturbances (ICoDs) in a large population, using these recommendations.
  
  
  METHODS
  From 01/31/1996 to 09/22/2010, an electrocardiogram was performed at each visit for all aircrew members examined for fitness assessment in an aeromedical center. The prevalence of left bundle branch block (LBBB), right bundle branch block (RBBB), incomplete LBBB, incomplete RBBB, nonspecific intraventricular disturbance (NIVCD), left anterior fascicular block (LAFB), and left posterior fascicular block (LPFB) was measured and compared by age and gender.
  
  
  RESULTS
  The global prevalence of ICoD was 3.09% in our population of 69,186 patients. The most frequent types of ventricular blocks were IRBBB (1.25%) and LAFB (1.10%), whereas RBBB (0.46%), LBBB (0.08%), ILBBB (0.03%), NIVCD (0.05%), and LPFB (0.13%) were rare findings. ICoDs are more frequent for males and older age groups (P < 0.001).
  
  
  CONCLUSIONS
  Our results are comparable to studies concerning low cardiovascular risks populations. The association between ICoD and cardiovascular diseases needs to be studied in this population.
authors.affiliation: Department of Aeronautical Medicine and Cardiovascular Diseases, Percy Military Hospital, Clamart, France.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Monin
authors.affiliation: Aeromedical Center, Robert Picqué Military Hospital, Bordeaux, France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Bisconte
authors.affiliation: Military Medical Center of Verdun-Etain, France.
authors.forename: Aurore
authors.initials: A
authors.lastname: Nicaise
authors.affiliation: Aeromedical Center, Percy Military Hospital, Clamart, France.
authors.forename: Anne-Pia
authors.initials: AP
authors.lastname: Hornez
authors.affiliation: Aeromedical Center, Percy Military Hospital, Clamart, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Manen
authors.affiliation: Aeromedical Center, Percy Military Hospital, Clamart, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Perrier
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001359:Aviation; D004562:Electrocardiography; D005260:Female; D005602:France / Q000453:epidemiology; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence
keywords: electrocardiogram; intraventricular conduction disturbance; prevalence