Short structured feedback training is equivalent to a mechanical feedback device in two-rescuer BLS: a randomised...

Area of Science:

• Emergency Medicine
• Cardiopulmonary Resuscitation
• Medical Education

Background:

• Resuscitation guidelines advocate CPR feedback devices to improve outcomes.
• The efficacy of verbal "human feedback" from a second rescuer has not been previously studied.
• This study directly compares human feedback to mechanical feedback devices.

Purpose of the Study:

• To compare the effectiveness of human feedback versus a mechanical audio-visual feedback device in improving CPR quality.
• To evaluate CPR performance metrics in a simulated two-rescuer scenario.

Main Methods:

• An open, prospective, randomized controlled trial involving 326 medical students.
• Three groups were compared: standard BLS (control), BLS with mechanical feedback (mfCPR), and BLS with human feedback (hfCPR).
• CPR quality was assessed using parameters like effective compression ratio (ECR), compression, ventilation, and time-related metrics over 8 minutes on a manikin.

Main Results:

• Effective Compression Ratio (ECR) was comparable between human feedback (hfCPR) and mechanical feedback (mfCPR) groups (0.33 vs. 0.35).
• The hfCPR group initiated chest compressions faster (2s vs. 8s) and had fewer incorrect decompressions (26% vs. 33%).
• However, the hfCPR group experienced a higher absolute hands-off time (67s vs. 60s).

Conclusions:

• CPR quality achieved with human feedback is similar to that obtained with mechanical audio-visual feedback devices.
• Human feedback presents a comparable alternative to technology-based feedback for CPR training.
• Further research into extended human feedback training is warranted to potentially enhance CPR quality cost-effectively.