Scene Safety: Your First Priority
Scene safety is the first step in every patient encounter, and the NREMT tests it extensively. An injured or incapacitated EMS provider cannot help anyone. Understanding how to assess and manage scene hazards is essential for both the cognitive exam and real-world practice.
Scene Size-Up Components
As you approach every scene, systematically assess:
- Safety hazards: Traffic, fire, electrical hazards, structural instability, hazmat, weather, water, weapons, hostile crowds
- Mechanism of injury or nature of illness: What happened? What forces were involved?
- Number of patients: Can you see all patients? Are there any hidden victims?
- Additional resources needed: Fire, police, hazmat, ALS, aeromedical, technical rescue
- Standard precautions: Appropriate PPE based on the situation
Personal Protective Equipment (PPE)
Select PPE based on the anticipated exposure:
- Minimum for all patient contacts: Gloves
- Blood or fluid splash risk: Gloves, eye protection, mask, gown
- Airborne pathogens (TB, measles, COVID): N95 respirator or higher, eye protection
- Hazmat incidents: Specialized chemical protective clothing. Do not enter a hazmat scene without proper training and equipment
Managing Specific Hazards
Motor Vehicle Collisions
Park the ambulance at least 100 feet from the scene, uphill and upwind if possible. Use the ambulance as a shield between traffic and the work area. Wear high-visibility vests. Watch for leaking fluids, deployed airbags that have not fired, and vehicle instability. Ensure the vehicle is in park with the ignition off and the battery disconnected if possible.
Violence and Crime Scenes
Stage in a safe location until law enforcement secures the scene. Do not enter scenes involving active violence, weapons, or hostile individuals. If a scene becomes unsafe after you arrive, retreat immediately. Document and preserve evidence when possible, but patient care takes priority over evidence preservation.
Hazardous Materials
Approach from uphill and upwind. Stay outside the hot zone. Use binoculars to read placards and container labels from a safe distance. Reference the Emergency Response Guidebook (ERG) for initial isolation distances. Do not touch, walk through, or drive through any unidentified substance. Wait for hazmat-trained teams to decontaminate patients before providing medical care.
Structural Fires
Stage at a safe distance until fire department declares the scene safe. EMS providers do not enter burning or smoke-filled structures. Be prepared for burn patients, inhalation injuries, and firefighter rehabilitation.
Ongoing Scene Assessment
Scene safety is not a one-time check. Continuously reassess for new hazards throughout the call. Conditions can change: bystanders can become hostile, fire can spread, structures can collapse, and weather can deteriorate. If the scene becomes unsafe at any point, immediately withdraw to a safe location.