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Geographical Association Between Basic Life Support Courses and Bystander Cardiopulmonary Resuscitation and Survival

Theo Walther Jensen1,2,3, Annette Kjær Ersbøll3,4, Fredrik Folke2,3,5

  • 1Emergency Medical Services Region Zealand, Naestved, Denmark.

Open Access Emergency Medicine : OAEM
|June 21, 2023
PubMed

Insights

Increased basic life support (BLS) course participation significantly boosts bystander cardiopulmonary resuscitation (CPR) rates during out-of-hospital cardiac arrests (OHCAs). Even a 5% rise in BLS training correlates with more bystander CPR, improving survival chances.

Area of Science:

  • Emergency Medicine
  • Public Health
  • Cardiology

Background:

  • Basic life support (BLS) training is crucial for improving outcomes in out-of-hospital cardiac arrest (OHCA).
  • The impact of widespread BLS course participation on bystander cardiopulmonary resuscitation (CPR) and OHCA survival remains under investigation.
  • Approximately 4% of Denmark's adult population participates in BLS courses annually.

Purpose of the Study:

  • To investigate the geographical association between BLS course participation and bystander CPR.
  • To examine the relationship between BLS course participation and 30-day survival from OHCA.
  • To identify geographical areas with low BLS participation and bystander CPR rates.

Main Methods:

  • Nationwide register-based cohort study utilizing data from the Danish Cardiac Arrest Register (2016-2019).
  • Inclusion of 704,234 individuals with BLS certificates and 15,097 OHCAs.
  • Analysis using logistic regression and Bayesian conditional autoregressive models at the municipality level.

Main Results:

  • A 5% increase in BLS course certificates was significantly associated with higher bystander CPR rates (OR 1.34).
  • This association was more pronounced during out-of-office hours (OR 1.43).
  • Identified geographical clusters with low BLS course participation and bystander CPR.

Conclusions:

  • Mass BLS education positively impacts bystander CPR rates in OHCA cases.
  • Increased BLS course participation at the municipal level significantly enhances the likelihood of bystander CPR.
  • The positive effect of BLS training on bystander CPR is particularly notable during out-of-office hours.
Abstract

Keywords:
basic life supportconditional autoregressive regressionepidemiologygeographysurvival

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