Teaching basic life support with an automated external defibrillator using the two-stage or the four-stage teaching...

Area of Science:

• Emergency Medicine
• Medical Education
• Public Health

Background:

• Laypersons hesitate to perform basic life support (BLS) and use automated external defibrillators (AEDs) due to perceived lack of skills.
• Effective training can reduce this barrier, potentially improving emergency response.
• Shorter, more cost-effective training methods are desirable to train more individuals.

Purpose of the Study:

• To compare the acquisition of BLS/AED skills using a two-stage versus a four-stage teaching technique.
• To evaluate self-perceived skill improvement after BLS/AED training.
• To determine the noninferiority of the two-stage technique compared to the four-stage technique.

Main Methods:

• Randomized trial comparing two-stage and four-stage BLS/AED training techniques.
• Participants assessed in a simulated cardiac arrest scenario using the European Resuscitation Council BLS/AED assessment form.
• Primary endpoint: successful completion of all 17 skills; noninferiority margin set at 20%.

Main Results:

• The two-stage technique (57% pass rate) was noninferior to the four-stage technique (59% pass rate), with a -2% difference.
• No significant differences observed in chest compression rate, depth, or rescue breath adequacy between groups.
• All participants in both groups reported improved skills post-training.

Conclusions:

• The two-stage BLS/AED teaching technique is noninferior to the four-stage technique for layperson skill acquisition.
• This simplified training method may facilitate wider adoption and improve public preparedness for cardiac emergencies.
• Further research could explore long-term skill retention and real-world performance differences.