What is sample mean in red cross?

SAMPLE are the key letters for:

Signs and Symptoms - what clues does the casualty show of what might be wrong. For example swelling around the ankle may indicate a fracture (among other things)

Allergies - is the casualty allergic to anything. Remove anything which is causing an allergic reaction.

Medication - is the casualty on any medication? how long for? have they taken it recently?

Past medical history - has this hap-penned before? it may be a repeat problem

Last meal - useful to tell the ambulance crew in case an anaesthetic is needed later

Event history - what caused the injury/accident? sometimes called the mechanism of injury