Exposure and environmental control

Exposure and environmental control

Exposure and environmental control

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Exposure & Environment - Strip, Flip, & Warm

  • Primary Goal: Completely disrobe the patient to enable a thorough head-to-toe visual inspection for occult injuries, then immediately prevent hypothermia.
  • Procedure:
    • Cut away all clothing to facilitate rapid assessment and avoid unnecessary movement.
    • After assessing the anterior, perform a log-roll, maintaining strict C-spine immobilization, to inspect the patient's back, spine, flanks, and perineum.
  • Environmental Control:
    • Trauma patients lose heat rapidly. Core temp <36°C (96.8°F) must be prevented.
    • Use warmed blankets, warmed IV fluids ($39°C$), and forced-air warming devices (e.g., Bair Hugger).

The Lethal Triad of Trauma: Hypothermia (<35°C), acidosis, and coagulopathy create a vicious cycle that dramatically increases mortality. Preventing heat loss is critical.

Log-roll technique for C-spine stabilization

Hypothermia & Triad of Death - The Chilly Killer

  • Definition: Core body temperature < 35°C (95°F). A key component of the lethal triad in major trauma, creating a vicious cycle.
  • Pathophysiology:
    • Coagulopathy: Temperature-dependent enzyme dysfunction impairs the clotting cascade and platelet function.
    • Metabolic Acidosis: ↓ tissue perfusion from vasoconstriction and ↓ cardiac output leads to anaerobic metabolism and lactate buildup.
    • Myocardial Dysfunction: ↓ cardiac output, bradycardia, and risk of arrhythmias.

Trauma Triad of Death: Hypothermia, Acidosis, Coagulopathy

  • Management Principles:
    • Passive Rewarming: Remove all wet clothing, cover with warm, dry blankets.
    • Active External Rewarming: Use forced-air warming devices (e.g., Bair Hugger).
    • Active Core Rewarming: Administer warmed IV fluids (to 39°C), warmed humidified oxygen, and consider body cavity lavage (peritoneal, pleural).

⭐ Coagulopathy from hypothermia is not reflected in standard lab tests like PT/INR, as blood samples are warmed to 37°C before analysis, masking the true in-vivo enzyme dysfunction.

The Log Roll - Spinal Safety Spin

  • Purpose: To examine the patient's back, flanks, and perineum while maintaining full spinal immobilization. Crucial for identifying occult injuries (e.g., penetrating wounds, vertebral deformities) and preventing hypothermia.

  • Team & Technique:

    • Requires a coordinated team, typically 4-5 personnel.
    • A designated leader at the head maintains manual in-line stabilization (MILS) and directs the team.
    • The patient is rolled as a single, rigid unit-like a log-to one side.
  • Assessment:

    • Palpate the entire length of the spine for tenderness, step-offs, or gaps.
    • Inspect for bruising, lacerations, or foreign bodies.

High-Yield: A rectal examination is often performed during the log roll to assess for sphincter tone, presence of blood (gross or occult), and a high-riding prostate-key indicators of spinal cord or pelvic injury.

Medical team performing a log roll procedure

High-Yield Points - ⚡ Biggest Takeaways

  • Completely undress the patient to facilitate a thorough head-to-toe examination and prevent missed injuries.
  • Immediately after exposure, aggressively prevent hypothermia to avoid the lethal triad.
  • Interventions include using warm blankets, warmed IV fluids, and increasing the ambient room temperature.
  • Hypothermia is a key part of the trauma triad of death (acidosis, hypothermia, coagulopathy).
  • Always logroll the patient to fully inspect the back and spine, maintaining C-spine precautions.

Practice Questions: Exposure and environmental control

Test your understanding with these related questions

A 34-year-old male is brought to the emergency department by fire and rescue following a motor vehicle accident in which the patient was an unrestrained driver. The paramedics report that the patient was struck from behind by a drunk driver. He was mentating well at the scene but complained of pain in his abdomen. The patient has no known past medical history. In the trauma bay, his temperature is 98.9°F (37.2°C), blood pressure is 86/51 mmHg, pulse is 138/min, and respirations are 18/min. The patient is somnolent but arousable to voice and pain. His lungs are clear to auscultation bilaterally. He is diffusely tender to palpation on abdominal exam with bruising over the left upper abdomen. His distal pulses are thready, and capillary refill is delayed bilaterally. Two large-bore peripheral intravenous lines are placed to bolus him with intravenous 0.9% saline. Chest radiograph shows multiple left lower rib fractures. Which of the following parameters is most likely to be seen in this patient?

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Flashcards: Exposure and environmental control

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An entire torso burn is _____% of the body surface area.

TAP TO REVEAL ANSWER

An entire torso burn is _____% of the body surface area.

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