Advanced life support versus basic life support in the pre-hospital setting: a meta-analysis

Area of Science:

• Emergency medicine
• Pre-hospital care
• Clinical effectiveness research

Background:

• Limited evidence exists on the benefits of Advanced Life Support (ALS) in pre-hospital trauma or acute illness care.
• Existing research often lacks controlled studies to definitively assess ALS impact on survival.

Purpose of the Study:

• To systematically review controlled studies evaluating if pre-hospital Advanced Life Support (ALS) improves patient survival compared to Basic Life Support (BLS).
• To identify specific patient groups that benefit from ALS interventions in pre-hospital settings.

Main Methods:

• A systematic review of controlled studies was conducted, searching databases like Medline, EMBASE, Cochrane Library, and Scopus up to July 31st, 2010.
• Studies comparing pre-hospital ALS treatment versus BLS treatment in trauma patients or cardiac arrest patients were included.

Main Results:

• ALS care did not increase survival in 16,857 trauma patients compared to BLS (pooled OR 0.892).
• ALS care significantly increased survival in 7,659 cardiac arrest patients compared to BLS (OR 1.468).
• Physician-led ALS interventions further enhanced survival probability in cardiac arrest patients (OR 2.047).

Conclusions:

• Implementing ALS for non-traumatic cardiac arrest patients demonstrably increases survival rates.
• ALS care is not associated with improved survival in trauma patients based on current meta-analysis.
• The scarcity of high-quality controlled studies on pre-hospital ALS for trauma patients limits definitive conclusions.