title: Defibrillation and the quality of layperson cardiopulmonary resuscitation-dispatcher assistance or training?
abstract: OBJECTIVE
  To examine whether basic life support-defibrillation (BLS-D) training of laypersons enhances the speed of defibrillation and the quality of cardiopulmonary resuscitation (CPR) during a simulated ventricular fibrillation scenario compared with a situation where the care provider has no previous BLS-D training but receives dispatcher assistance with the use of an automated external defibrillator (AED) and the performance of CPR.
  
  
  METHODS
  Fifty-two military conscripts of the Finnish Defence Forces who without previous medical education had been tested in a simulated cardiac arrest scenario with dispatcher assistance and thereafter received a 4-h BLS-D training. Six months later they were randomly divided to form teams of two and again tested in a similar scenario but without dispatcher assistance. The time interval from collapse to first shock, hands-off time and the quality of CPR were compared between the two tests.
  
  
  RESULTS
  The quality of mouth-to-mouth ventilation was better after training, but there was only a minor improvement in the quality of compressions and the speed of defibrillation.
  
  
  CONCLUSIONS
  Training improved the quality of mouth-to-mouth ventilation performed by laypersons but had only a minor effect on defibrillation and the quality of compressions.
authors.affiliation: The Finnish Defence Forces, Centre for Military Medicine, FIN-15701 Lahti, Finland. heini.harve@helsinki.fi
authors.forename: Heini
authors.initials: H
authors.lastname: Harve
authors.forename: Jorma
authors.initials: J
authors.lastname: Jokela
authors.forename: Antti
authors.initials: A
authors.lastname: Tissari
authors.forename: Ari
authors.initials: A
authors.lastname: Saukko
authors.forename: Toni
authors.initials: T
authors.lastname: Okkolin
authors.forename: Ville
authors.initials: V
authors.lastname: Pettilä
authors.forename: Tom
authors.initials: T
authors.lastname: Silfvast
mesh_terms: D016887:Cardiopulmonary Resuscitation / Q000193:education*; D004554:Electric Countershock; D004631:Emergency Medical Service Communication Systems; D005387:Finland; D006266:Health Education; D006323:Heart Arrest / Q000628:therapy*; D006801:Humans; D014693:Ventricular Fibrillation / Q000628:therapy