title: A randomized trial of the capability of elderly lay persons to perform chest compression only CPR versus standard 30:2 CPR.
abstract: OBJECTIVE
  Early cardiopulmonary resuscitation (CPR) improves survival after cardiac arrest, but there is a discrepancy between the age group normally attending CPR-classes and the age group most likely to witness a cardiac arrest. We wanted to study if elderly lay persons could perform 10min of CPR on a realistic manikin with continuous chest compressions (CCC) and conventional CPR (30:2).
  
  
  METHODS
  Volunteers were tested 5-7 months after CPR-classes. They were randomized to CCC or 30:2, and to receive feedback (FB) or not. Quality of CPR, age adjusted maximum heart rate (HRmax), and subjective exhaustion ratings were measured and evaluated in a blinded fashion. Temporal development and group differences were evaluated with ANOVA procedures.
  
  
  RESULTS
  All 64 volunteers were able to perform CPR for 10min and rated their efforts as mild to moderate in concordance with a mean HRmax of 78%. Quality of CPR was similar in all groups, except for chest compression rate that was slightly higher and had less variability in the FB group. Overall chest compression depth was 41+/-4.5mm. Analysis of temporal development of chest compression depth revealed a small initial decline before leveling off. As expected, CCC group had less pauses and higher total number of chests compressions.
  
  
  CONCLUSIONS
  Lay people in the age group 50-76 were able to perform CPR with acceptable quality for 10min and we found only very slight temporal quality deterioration. This makes training programs for the elderly meaningful to improve survival after cardiac arrest.
authors.affiliation: Institute for Experimental Medical Research, Oslo University Hospital Ulleval, Kirkeveien 166, Oslo, Norway. andres.neset@studmed.uio.no
authors.forename: Andres
authors.initials: A
authors.lastname: Neset
authors.forename: Tonje S
authors.initials: TS
authors.lastname: Birkenes
authors.forename: Helge
authors.initials: H
authors.lastname: Myklebust
authors.forename: Reidar J
authors.initials: RJ
authors.lastname: Mykletun
authors.forename: Silje
authors.initials: S
authors.lastname: Odegaard
authors.forename: Jo
authors.initials: J
authors.lastname: Kramer-Johansen
mesh_terms: D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D016887:Cardiopulmonary Resuscitation / Q000193:education* / Q000379:methods; D005260:Female; D006323:Heart Arrest / Q000628:therapy*; D006336:Heart Massage / Q000379:methods; D006801:Humans; D008297:Male; D008348:Manikins; D008875:Middle Aged; D018763:Muscle Fatigue / Q000502:physiology*; D011312:Pressure; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D035441:Thoracic Wall; D013997:Time Factors