Advanced life support vs basic life support field care: an outcome study

Area of Science:

• Emergency Medicine
• Pre-hospital Care
• Health Services Research

Background:

• The effectiveness of advanced life support (ALS) in pre-hospital emergency care is a critical area of study.
• Understanding the impact of ALS versus basic life support (BLS) on patient outcomes in diverse urban settings is essential for resource allocation and quality improvement.

Purpose of the Study:

• To evaluate the impact of ALS field care on patient outcomes within an urban Canadian emergency medical services environment.
• To compare the effectiveness of ALS interventions against BLS in a non-trauma center setting.

Main Methods:

• A convenience cohort study analyzed emergent adult ambulance transfers to an urban Canadian hospital.
• Data were collected from ambulance reports and hospital records, comparing outcomes (ED LOS, hospital LOS, admission rates) between BLS and ALS groups across various presenting complaints.
• Patient outcomes were stratified by field care level: BLS (Level 1) versus ALS (Levels 2 and 3).

Main Results:

• The study included 1,397 patients, with no significant baseline demographic differences between BLS and ALS groups.
• No significant differences in ED triage scores, ED length of stay (LOS), admission rates, or hospital LOS were observed between BLS and ALS patients across presenting complaint groups.
• Trends suggested no difference in discharge dispositions between the two care levels.

Conclusions:

• The provision of ALS field care showed no measurable benefit on patient outcomes compared to BLS in Metropolitan Toronto for patients transported to a non-trauma center.
• Findings suggest that for this specific urban environment and patient population, ALS interventions did not lead to improved clinical outcomes.