title: Improvement in chest compression quality using a feedback device (CPRmeter): a simulation randomized crossover study.
abstract: OBJECTIVE
  Cardiac arrest survival depends on celerity and efficiency of life support action. Guidelines emphasized the chest compression (CC) quality and feedback devices are encouraged. The purpose is to study the impact of the CPRmeter feedback device on resuscitation performed by untrained rescuers.
  
  
  METHODS
  This is a prospective randomized crossover study on manikins (Resusci Anne). One hundred and forty four students inexperienced in cardiopulmonary resuscitation representing untrained rescuers were included. Participants performed 2 minutes of CC without interruption with (group G) or without (group B) feedback. Four months passed between the 2 crossover phases to avoid resilience effect. Data collected by the CPRmeter device were: CC rate, depth and release.
  
  
  RESULTS
  Efficient CC rate ([simultaneous and correct CC rate, depth and release] primary outcome) (absolute difference [95% CI]) was significantly improved in group G (71%) compared to group B (26%; [45 {36-55}]; P < .0001). Adequate depth rate (>38 mm) was significantly improved in group G (85%) compared to group B (43%; [42 {33-52}]; P < .0001). Adequate CC rate (90-120/min) was significantly improved in group G (81%) compared to group B (56%; [25 {15-35}]; P < .0001). The average CC rate and depth in group G were significantly less dispersed around the mean compared to group B (test of variance P < .007; P < .015 respectively).
  
  
  CONCLUSIONS
  The use of the CPRmeter significantly improved CC quality performed by students inexperienced in cardiopulmonary resuscitation.
authors.affiliation: CHU de Caen, Pôle Réanimations - Anesthésie - SAMU, F-14000 Caen, France. Electronic address: buleon-c@chu-caen.fr.
authors.forename: Clément
authors.initials: C
authors.lastname: Buléon
authors.forename: Jean-Jacques
authors.initials: JJ
authors.lastname: Parienti
authors.forename: Laurent
authors.initials: L
authors.lastname: Halbout
authors.forename: Xavier
authors.initials: X
authors.lastname: Arrot
authors.forename: Hélène
authors.initials: H
authors.lastname: De Facq Régent
authors.forename: Dan
authors.initials: D
authors.lastname: Chelarescu
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Fellahi
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Gérard
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Hanouz
mesh_terms: D018592:Cross-Over Studies; D005246:Feedback; D005260:Female; D006336:Heart Massage / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008297:Male; D008348:Manikins; D011446:Prospective Studies; D055815:Young Adult