Quality of chest compressions during continuous CPR; comparison between chest compression-only CPR and conventional CPR

Resuscitation. 2010 Sep;81(9):1152-5. doi: 10.1016/j.resuscitation.2010.05.008. Epub 2010 Jun 17.


Objectives: This study aimed to compare the time-dependent deterioration of chest compressions between chest compression-only cardiopulmonary resuscitation (CPR) and conventional CPR.

Methods: This study involved 106 and 107 participants randomly assigned to chest compression-only CPR training and conventional CPR training, respectively. Immediately after training, participants were asked to perform CPR for 2 min and the quality of their CPR skills were evaluated. The number of chest compressions in total and those with appropriate depth were counted every 20-s CPR period from the start of CPR. The primary outcome was the CPR quality index calculated as the proportion of chest compressions with appropriate depth among total chest compressions.

Results: The total number of chest compressions remained stable over time both in the chest compression-only and the conventional CPR groups. The CPR quality index, however, decreased from 86.6+/-25.0 to 58.2+/-36.9 in the chest compression-only CPR group from 0-20 s through 61-80 s. The reduction was greater than in the conventional CPR group (85.9+/-25.5 to 74.3+/-34.0). The difference in the CPR quality index reached statistical significance (p=0.003) at 61-80 s period.

Conclusions: Chest compressions with appropriate depth decreased more rapidly during chest compression-only CPR than conventional CPR. We recommend that CPR providers change their roles every 1 min to maintain the quality of chest compressions during chest compression-only CPR. (UMIN-CTR C0000000321).

Publication types

  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Cardiopulmonary Resuscitation / education
  • Cardiopulmonary Resuscitation / methods*
  • Cardiopulmonary Resuscitation / standards
  • Defibrillators
  • Education
  • Female
  • Heart Arrest / therapy*
  • Humans
  • Male
  • Middle Aged
  • Pressure
  • Quality of Health Care*
  • Respiration, Artificial / methods
  • Respiration, Artificial / standards
  • Thorax
  • Time Factors
  • Young Adult