Different Resting Methods in Improving Laypersons Hands-Only Cardiopulmonary Resuscitation Quality and Reducing...

Area of Science:

• Emergency Medicine
• Cardiopulmonary Resuscitation Research
• Public Health Interventions

Background:

• Prolonged continuous chest compressions (CCC) in hands-only cardiopulmonary resuscitation (CPR) can lead to significant rescuer fatigue.
• Maintaining high-quality CPR is crucial for patient survival, but fatigue can impair compression depth and rate.
• Investigating optimal rest strategies is vital for improving CPR effectiveness by laypersons.

Purpose of the Study:

• To evaluate the impact of different resting strategies on CPR quality and rescuer fatigue.
• To compare various rest-start points and rest-compression ratios during a 10-minute hands-only CPR scenario.
• To identify the most effective method for laypersons performing prolonged CPR.

Main Methods:

• A prospective crossover study involving 30 laypersons performing hands-only CPR.
• Participants performed 10-minute CPR using continuous chest compressions (CCC) or methods with intermittent rests (e.g., 4+6, 2+8, 5/30, 3/15).
• CPR quality (depth, rate, hands-off duration, CCF) and fatigue indicators (HR, BP, RPE) were measured and compared.

Main Results:

• All resting methods improved CPR quality by reducing declining compression depth and increasing perceived exertion compared to continuous compressions.
• The 3/15 method (3-second rest after 15-second compressions) yielded the best CPR quality and highest heart rate increase.
• While the 2+8 method showed no overall difference in quality or fatigue compared to continuous CPR, it offered better minute-by-minute CPR quality than the 4+6 method.

Conclusions:

• Transient rests are beneficial for maintaining CPR quality and reducing subjective fatigue in laypersons during prolonged hands-only CPR.
• The 3/15 rest strategy appears most effective for optimizing CPR performance and minimizing fatigue.
• These findings support the integration of structured rest periods into CPR training for lay rescuers.