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Spinal Immobilization — Supine Patient

Category: Procedures Sources: raw/nremt/psychomotor-skills.md, raw/supplemental/patient-assessment-sequence.md Last updated: 2026-04-03

Overview

Spinal immobilization of a supine patient applies manual stabilization, cervical collar, and long backboard to protect the spinal cord from secondary injury when mechanism of injury suggests possible spinal trauma. The principle is: assume injury exists and immobilize until cleared by imaging or clinical assessment at the hospital. The supine protocol applies to patients already found lying down or who are being positioned supine from another position.

Key Points

  • Indications (any of the following with significant MOI):
  • Altered LOC after trauma
  • Complaint of neck or back pain
  • Numbness, tingling, or weakness in extremities
  • High-energy MOI: MVC (unbelted), rollover, ejection, fall >3× patient's height, diving injury, penetrating trauma near spine, axial load
  • PMS assessment: Assess pulse, motor, and sensation in all four extremities BEFORE and AFTER immobilization — this documents baseline neurological status and detects changes caused by the procedure itself.
  • C-collar sizing: Measure from shoulder to jaw; select collar that fits without hyperextending or flexing the neck. An improperly sized collar can worsen injury.
  • Manual stabilization: Applied first, maintained throughout the entire procedure until the patient is fully secured to the board. Never release manual stabilization until head blocks and straps are applied.
  • Neutral inline position: The goal is neutral spine — not hyperextended, not flexed, not rotated. If patient resists positioning (pain, resistance, neurological complaint) → immobilize in position found.
  • Board straps: Secure chest, hips, and legs to the board before securing the head. The body anchors the board; the head anchors to the body.

Assessment Relevance

Spinal immobilization need is identified during scene-size-up (MOI assessment) and confirmed during primary-assessment and history-taking (neurological complaints, LOC, pain on palpation). The secondary-assessment PMS checks during the posterior exam confirm neurological baseline.

If the patient is priority for another reason (airway compromise, uncontrolled bleeding), address those first — spinal immobilization is important but does not take priority over an obstructed airway or hemorrhagic shock.

Procedures

  1. Scene size-up: Identify MOI (scene-size-up); assign one rescuer to manual c-spine stabilization immediately on approach.
  2. Manual stabilization: Rescuer 1 holds head in neutral inline position, hands on sides of head. Do not release until step 9.
  3. Assess PMS: Baseline pulse (radial bilateral), motor (squeeze fingers bilateral, plantar flex/dorsiflex feet bilateral), sensation (can you feel this?) all 4 extremities.
  4. C-collar sizing: Measure and select appropriate collar.
  5. C-collar application: Apply without releasing manual stabilization. Rescuer 2 places collar; confirm fit; close front closure.
  6. Position long backboard: Slide board alongside patient.
  7. Log roll (minimum 3 rescuers preferred):
  8. Rescuer 1 maintains head control throughout
  9. Rescuer 2 controls shoulders and hips
  10. Rescuer 3 controls hips and legs
  11. On command from head rescuer: roll patient as a unit
  12. Inspect posterior: secondary-assessment — check back and posterior for DCAP-BTLS while patient is rolled.
  13. Lower onto board: Lower patient onto board; center patient.
  14. Secure to board (body before head):
    • Chest strap: across chest/shoulders
    • Hip/pelvis strap
    • Leg strap
  15. Secure head: Apply head blocks or rolled towels bilaterally; secure with tape/straps across forehead and collar — do not strap across the chin or mouth.
  16. Reassess PMS: Repeat pulse, motor, sensation all 4 extremities. Document any changes.
  17. Transfer to stretcher; secure board to stretcher.

NM Protocol Notes

  • NM EMS protocols generally follow evidence-based selective spinal immobilization criteria (similar to NEXUS or Canadian C-Spine criteria). Not every trauma patient needs a backboard — use clinical judgment.
  • NM protocols may allow EMT-B to withhold immobilization for awake, alert, sober patients with low-energy mechanism, no midline spinal tenderness, and no neurological symptoms. Confirm with medical director.
  • Padding is required under the occiput for pediatric patients on adult boards — children have proportionally larger heads, which would flex the neck if unpadded.

NREMT Relevance

Spinal immobilization (supine) is a standalone NREMT psychomotor skill station. Examiners assess: - Manual stabilization maintained throughout - Baseline PMS assessment (before collar) - Correct C-collar sizing and application - Body secured before head during board strapping - Post-immobilization PMS reassessment - Neutral inline position maintained

Critical failures: releasing manual stabilization before head is secured; securing head before body; failing to assess PMS; C-collar that hyperextends or flexes the neck.

Sources

  • raw/nremt/psychomotor-skills.md — Spinal Immobilization (Supine)
  • raw/supplemental/patient-assessment-sequence.md — Scene Size-Up (c-spine consideration)