Improper bystander-performed basic life support in cardiac arrests managed with public automated external...

Area of Science:

• Emergency Medicine
• Cardiology
• Public Health

Background:

• Basic life support (BLS) quality is crucial for out-of-hospital cardiac arrests (OHCAs).
• Public automated external defibrillators (AEDs) are increasingly available for bystander use.
• The effectiveness and quality of BLS with public AEDs in real-world scenarios require investigation.

Purpose of the Study:

• To assess the quality of basic life support (BLS) in out-of-hospital cardiac arrests (OHCAs).
• To evaluate the impact of bystander cardiopulmonary resuscitation (CPR) and public AED application on OHCA outcomes.
• To compare BLS performance between healthcare providers (HCPs) and non-HCPs using public AEDs.

Main Methods:

• Prospective data collection on OHCAs treated with and without public AEDs before emergency medical technician (EMT) arrival (January 2006 - December 2012).
• Comparison of BLS actions and outcomes between cases with and without public AED application.
• Analysis of CPR interruptions and AED usage patterns between HCP and non-HCP groups.

Main Results:

• Public AEDs were used in 4.3% of eligible OHCAs, with defibrillation in 13.3% of these cases.
• Public AED application improved 1-year survival for shockable rhythms but not non-shockable rhythms.
• Non-HCP AED users showed significantly lower compression rates and longer CPR pauses compared to HCPs.

Conclusions:

• Basic life support quality was often suboptimal in OHCAs involving public AEDs.
• Public AED use demonstrated a survival benefit in specific OHCA scenarios.
• Periodic, standardized BLS training is essential for both healthcare providers and the general public using AEDs.