Abstract
The purpose of this study was to clarify the relationship between the difference in the environment under the body surface during cardiac arrest and the quality of chest compressions. A study on the quality of chest compressions was conducted using CPR mannequins by 30 University A nursing students in five environments. The analysis calculated descriptive statistics on basic attributes and the quality of chest compressions in the five environments, and multiple comparisons were made between the assessment of chest compressions and the environments. Pearson's product-moment correlation coefficient or Spearman's rank correlation coefficient was calculated for the relationship between the quality of chest compressions and the body size of the practitioner. Results there was no correlation between the quality of chest compressions and body size in the five environments. The effect of hardness under the body surface, posture of the practitioner and physique on the quality of the chest compressions was clarified. In the subjective evaluation, the evaluation is significantly higher as the support basal plane of the practitioner is secured.