Related Experiment Video
Updated: Jul 16, 2026

Standardized Model of Ventricular Fibrillation and Advanced Cardiac Life Support in Swine
Published on: January 30, 2020
Practical impact of the European Resuscitation Council's BLS algorithm 2005
B Roessler1, R Fleischhackl, H Losert
1Research Institute of the Vienna Red Cross, Vienna, Austria.
The 2005 Basic Life Support (BLS) algorithm is easier to learn and leads to faster chest compressions compared to the 2000 guidelines. However, adherence to the 2005 BLS sequence needs improvement for better cardiac arrest survival rates.
Area of Science:
- Emergency Medicine
- Cardiopulmonary Resuscitation
- Public Health
Background:
- The European Resuscitation Council (ERC) introduced significant changes to the Basic Life Support (BLS) algorithm in 2005.
- The practical impact of these modifications on BLS algorithm adherence required investigation.
Purpose of the Study:
- To evaluate the practical impact of the 2005 ERC BLS algorithm modifications.
- To compare adherence to the 2000 versus 2005 BLS algorithms.
- To determine the time to initiation of chest compressions under both guideline versions.
Main Methods:
- A randomized cross-over design study involving adult participants.
- Participants were randomized to adhere to either the 2000 or 2005 ERC BLS algorithm.
- Performance was assessed using a recording resuscitation manikin, measuring adherence and time to chest compressions.
Main Results:
- Adherence to the 2005 BLS algorithm (40.68%) was significantly higher than to the 2000 algorithm (15.25%).
- The time to start chest compressions was significantly shorter with the 2005 algorithm (21.31s) compared to the 2000 algorithm (36.68s).
- Despite improvements, nearly 60% of participants did not correctly follow the 2005 BLS algorithm.
Conclusions:
- The 2005 BLS algorithm appears easier to learn and retain than the 2000 version.
- Faster initiation of chest compressions with the 2005 algorithm is a significant benefit.
- Improved adherence to the 2005 BLS algorithm is crucial for potentially enhancing survival rates after cardiac arrest.
Related Concept Videos
Cardiopulmonary Resuscitation IV: Pharmacological Management
Cardiopulmonary Resuscitation I: Adult
Cardiopulmonary Resuscitation III: AED Use
Cardiopulmonary Resuscitation II: ACLS Airway Management
Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques

