Traffic Accident First Aid

1. Definition and Core Principles

Traffic accident first aid refers to emergency medical care administered at the scene of a road collision by first responders, medical personnel, or bystanders. Its primary purpose is to stabilise the casualties' vital signs, prevent injuries from deteriorating, and prepare them for subsequent treatment before professional medical teams arrive. Road traffic trauma typically involves polytrauma / multiple trauma (simultaneously affecting the head, spine, thorax, abdomen, and limbs) and is frequently accompanied by immediate life-threatening conditions such as massive haemorrhage and airway obstruction. The promptness of on-scene emergency aid directly dictates survival rates and the quality of long-term recovery.

First aid at crash scenes adheres to two fundamental golden rules: "save lives first, treat injuries later" and "eliminate scene hazards first, administer rescue later". First responders must only initiate rescue operations after ensuring the environment is completely safe for both themselves and the victims. Internationally standard on-site trauma assessment follows the ABCDE approach (Airway, Breathing, Circulation, Disability, and Exposure).

2. Scene Safety Assessment and Emergency Notification

• Scene Safety: Prior to approaching an accident vehicle, ensure there is zero risk of a secondary crash—check whether trailing traffic has slowed down, look for signs of fire, and check for fuel spillage or battery electrolyte leaks. If any hazards are identified, casualties must be safely relocated to an area at least 50 metres upwind before commencing first aid.

• Cut Off Power: If the engine or motor is still running, prioritise turning off the engine and switching off the ignition to stop the fuel pump from running and aggravating leak risks. For battery electric vehicles (BEVs), avoid touching any orange high-voltage cables and disconnect the 12V auxiliary battery as quickly as possible (commonly located in the front boot/frunk or rear boot).

• Contact Emergency Services: Immediately call 120 (or the local emergency hotline) and notify 122 (traffic police). Clearly communicate the exact location, number of casualties, extent of injuries (e.g. unconsciousness, severe bleeding), vehicle types (including whether electrified/xEV vehicles are involved), and any on-scene hazards (such as fires or chemical spills).

3. Initial Assessment and Triage

In mass-casualty collisions, a swift triage assessment must be completed within 1 to 2 minutes to prioritise on-site treatment and ambulance evacuation. The internationally recognised START triage protocol (Simple Triage and Rapid Treatment) is utilised:

Triage tags or colour-coded ribbons can be attached to the casualty's wrist or collar for quick visual identification by incoming paramedics. Note: Priorities may be adjusted dynamically based on prevailing conditions; for instance, catastrophic external bleeding must be arrested immediately, occasionally taking precedence over certain non-obstructive airway interventions.

4. Basic Life Support (BLS) Protocols

• Airway Management:

  • If the casualty is unresponsive but breathing normally, use the head-tilt, chin-lift manoeuvre to open the airway—apply gentle downward pressure on the forehead while lifting the chin until the earlobes are aligned perpendicular to the ground. If a cervical spine injury is suspected (due to neck pain or limb numbness), switch strictly to the jaw-thrust manoeuvre—grasp the angles of the lower jaw with both hands and lift forward and upward without moving the neck.

  • If visible foreign matter (vomitus, blood clots, dislodged teeth, or dentures) obstructs the oral cavity, place the casualty into the recovery/lateral position gently to clear blockages manually using fingers or gauze before carefully repositioning them supine.

• Breathing Assessment and Rescue Breathing:

  • With the airway open, position your cheek over the patient's mouth and nose to listen for breath sounds and observe chest rise for no more than 10 seconds. If breathing is absent or presents only as agonal gasps, initiate Cardiopulmonary Resuscitation (CPR) immediately.

  • Survival rates for traumatic cardiac arrest arising from motor vehicle accidents are exceptionally low compared to medical cardiac arrests. Without advanced medical apparatus on scene, performing hands-only chest compressions is widely recommended (minimising cross-infection risks from mouth-to-mouth resuscitation unless a pocket mask or barrier device is available) until paramedics arrive. For adults, maintain a compression depth of 5–6 cm at a continuous rate of 100–120 compressions per minute.

• Circulation Assessment and Haemorrhage Control:

  • Check for carotid or femoral pulses; if pulseless and apnoeic, carry out full CPR (30 compressions to 2 rescue breaths).

  • If active arterial bleeding is present (bright red blood spurting or pulsating in sync with the heartbeat), apply immediate direct pressure with a sterile dressing or clean cloth. If blood soaks through, add additional layers of dressing on top without removing the original layer (to avoid disrupting formed clots). If severe extremity bleeding cannot be controlled with direct pressure, apply a commercial tourniquet 5–10 cm above the bleeding site.

• Tourniquet Application Guidelines:

  • Tourniquets must be positioned exclusively on the upper third of the upper arm or the mid-to-upper thigh, using a band at least 5 cm wide (to prevent nerve damage). Record the exact time of application (down to the minute) clearly on the casualty's forehead or medical tape.

  • Continuous tourniquet application should not exceed 2 hours. Every 40–60 minutes, a slow, controlled release for 1–2 minutes may be considered to assess bleeding, but only if immediate surgical haemostasis facilities are on standby.

  • Precaution: Tourniquets are restricted to life-threatening limb haemorrhage due to risks of ischaemic limb necrosis. For bleeds located on the torso, neck, or groin, rely strictly on wound packing and direct pressure dressings.

5. Fracture Immobilisation and Transfer Contraindications

• Spinal Injury Precautions: Never move, twist, or flex a casualty's head or neck unless spinal trauma has been explicitly ruled out. If emergency evacuation is essential (e.g. immediate vehicle fire risk), execute the multi-person log-roll or flat-lift technique—multiple rescuers positioned on one side must support the head-neck, shoulder-back, waist-hips, and lower limbs simultaneously, lifting in unison onto a rigid spine board or hard surface while keeping the entire spinal column in strict neutral alignment. Improper handling or carrying someone upright can cause catastrophic spinal cord transection and irreversible paralysis.

• Fracture Splinting: For visible limb fractures (manifesting deformity or unnatural mobility), immobilise the joints both above and below the fracture site using rigid splints (or improvisations like cardboard, wooden slats, or umbrellas), adding soft padding between the splint and limb to alleviate pressure necrosis. Never attempt to force bone fragments back into the tissue.

• Transfer Contraindications: Casualties with suspected pelvic or rib fractures must never be moved using cradle carries or piggyback transfers; always transfer them flat on a rigid stretcher. Pelvic fractures require circumferential pelvic sheet wrapping or a pelvic binder (wrapping a bedsheet or wide strap tightly around the pelvis) before movement to prevent bone shards from lacerating the iliac vessels and triggering lethal internal haemorrhage.

6. Specialised Management for Specific Trauma

• Head and Brain Trauma: If clear fluid (cerebrospinal fluid leak) or blood drains from the casualty's nose or ears, do not pack or irrigate the cavities. Elevate the head slightly, cover loosely with sterile gauze, and await specialised medical intervention.

• Thoracic Trauma: For open chest wounds (sucking chest wounds), apply an occlusive dressing (e.g. clean plastic sheet or cling film) taped on three sides at the end of expiration (leaving one side unsealed to act as a flutter valve) to prevent tension pneumothorax. If the patient develops worsening dyspnoea, cyanosis, and subcutaneous emphysema across the neck, urgent needle decompression by medical personnel is critical.

• Abdominal Trauma: In cases of visceral evisceration (protruding intestines or omentum), never attempt to reduce the organs back into the abdominal cavity. Cover the exposed tissue with sterile saline-soaked dressings and shield them with a rigid dome/bowl to prevent contamination and tissue desiccation. Keep the patient strictly nil-by-mouth (NPO) in anticipation of emergency surgery.

7. Psychological First Aid and Communication

Victims at crash sites often suffer from acute panic and disorientation. Rescuers should maintain communication using a calm, steady, and reassuring tone, offering clear updates such as "Help is on the way" and "You are safe now", while asking for their name and next-of-kin details to assess cognitive status. Even if a casualty slips into semi-consciousness, reassuring auditory cues can effectively mitigate physiological stress reactions.

8. Technological and Clinical Trends

• 5G-Enabled Tele-Emergency Guidance: Emergency dispatch centres connect with on-scene bystanders via live video links, enabling emergency physicians to provide step-by-step real-time guidance on wound packing, splinting, and CPR, effectively closing the critical response gap before ambulances arrive.

• Automatic Crash Notification (eCall): On-board eCall telematics automatically transmit GPS coordinates, impact vectors, cabin occupant count, and seatbelt usage metrics to emergency call centres immediately following a collision, giving rescue teams invaluable situational awareness prior to arrival.

• Smart Tourniquets: Tourniquets fitted with embedded pressure sensors and timer microchips automatically track applied pressure and application duration, streaming diagnostic data to hospital triage apps via Bluetooth to eliminate ischaemic complications caused by missing record tags.

• Focused Assessment with Sonography for Trauma (FAST): Ultra-portable point-of-care ultrasound (POCUS) scanners are increasingly deployed in frontline ambulances and rescue units, enabling rapid bedside detection of occult conditions such as intraperitoneal bleeding and pericardial tamponade to fast-track surgical triage.