Abstract 2622: Lay Rescuers’ Characteristics Affect Quality of Chest Compressions during cardiac-only resuscitation
[Introduction]Quality of chest compressions has been recognized as a key determinant of successful outcome from cardiac arrest. However, whether the quality of chest compressions varies according to lay rescuers’ characteristics including sex, age and body weight are unclear.
[Objective] To evaluate the associations between rescuers’ characteristics and the quality of chest compressions.
[Method]Participants: General public (18 years or older).
Data: Data were obtained from 182 participates in a 1-hour cardiac-only CPR training program. A 2 minute scenario-based test was conducted and resuscitation skills were recorded automatically.
Outcomes: The primary outcome was the proportion of chest compressions with sufficient depth among the total chest compressions .
Statistical Analysis: Difference in the proportion of sufficient chest compressions according to sex, age (<<26>50, 51–60, >=61) and body weight (<<26>50, 51–55, 56–60, >=61Kg) were analyzed using analysis of covariance.
[Result]The proportion of chest compressions with sufficient depth decreased with decreasing of body weight. Female sex and aging were independently associated with poor performance of chest compressions (Table⇓). Time-dependent deterioration of the skills were observed (figure⇓).
[Conclusion]Female sex, higher age, and low body weight of lay rescuers would lower the quality of chest compressions.