Scene Size Up
Components of scene size-up:
Body substance isolation precautions
Most important part is hand washing
Important to choose the correct protection in a given situation (gloves, face shield, mask, gown)
Key to preventing danger is observation: downed power lines, use binoculars with haz mat trailers,
watch for jagged metal, look for agitated people or hostile crowds and weapons, evidence at crime
scenes, signs of alcohol or drug use, unusual silence, looking for blood and other bodily fluids
In cases of violence: do not enter, retreat if there are weapons, use equipment as a distraction, cover
and conceal, call police
In cases of motor vehicle collisions: personal protective gear, be alert for unstable vehicles, look for
leaking fluids, be aware of sharp surfaces, call fire/haz mat as needed
In cases of outdoor emergencies:
extreme weather awareness, no rescues on slopes, heights, confined
spaces and water, notify appropriate rescue team
Mechanism of injury/nature of illness
Mechanism of injury (MOI) – patients who appear to have experienced significant mechanism of
injury are considered to have a serious injury until proven others – even if they appear to be fine.
the MOI appears non significant, there is no guarantee that the patient isn’t serious.
Significant mechanisms of injury in a motor vehicle collision include: Position of patient, use of
safety restraints/airbags, intrusion, speed of vehicles, object impacted, damage to steering wheel/
windshield, death of a passenger.