Heres how Id do it
BSI
Look around the scene as you approach to gather clues of MOI (IE car is smashed, human sized hole in windshield, pt is lying about 10ft from vehicle)
While approaching the scene look for any other patients, you and your partner go around seperate sides of vehicle and look inside vehicle doing a quick but safe scan.
If it looks like and ALS call or youve got more pts than your crew can handle, then radio for additional units.
Take a quick moment to see how bad your pt. is. (Blood gushing out of thigh is NOT a good sign!)
Determine LOC by identifying yourself and asking the pt his name if he doesnt respond do AVPU (Alert, Verbal, Pain, Unconscious)
Then ask, Name, what hurts the most???
Then assess airway, if hes talking in complete sentences and calm he's got a open airway, if not, time to do something. Remember A-B-C
Airway - is his airway open?
Breathing - are is respirations within normal range? Good chest rise?
Circulation - does he have a good strong steady pulse within normal ranges.
If the ABCs warrant it strip the chest area to expose it and any problems with the chest rise (sucking chest wound, uneven chest rise, no chest rise)
Remember when going in for skill check-offs go in confident and calm. Nerves can ruin an otherwise good patient asessment.
-CP