Cold, Excessive

Accidental hypothermia staging, gentle handling doctrine, and circum-rescue collapse prevention

// IMMEDIATE ACTIONS

Execute these steps in order:

MAX PRIORITY

01
SEEK SHELTER & REMOVE WET CLOTHING

Move out of wind and cold, strip off wet garments, and insulate body with dry layers and windproof blankets.
02
HANDLE PATIENT GENTLY WITH ZERO EXERTION

Keep hypothermic patient lying flat and motionless. Rough physical movement or sudden standing triggers fatal ventricular fibrillation.
03
ACTIVE CORE REWARMING ONLY

Apply warm packs to the chest, neck, armpits, and groin. Never rub limbs or apply direct heat to extremities.
04
CALL 911 / 112 & MONITOR AIRWAY

Summon advanced life support and perform continuous respiratory checks (prepare CPR if breathing ceases).

// CRITICAL MISTAKES (DO NOT)

✕ Do not rub, massage, or slap cold arms and legs

WHY: flushes icy, acidotic blood into the heart core
✕ Do not allow the patient to stand up or walk under their own power

WHY: causes immediate circum-rescue orthostatic collapse
✕ Do not place the patient in a hot bath or shower.
✕ Do not give alcohol or caffeinated beverages

WHY: alcohol causes peripheral vasodilation and accelerates heat loss

MEMORY HOOK (THE ONE THING TO REMEMBER)

“Handle gently, keep horizontal, insulate the core, and never rub freezing limbs.”

Accidental hypothermia occurs when the body's internal heat production cannot match ambient thermal dissipation, driving core body temperature below 35°C (95°F).

The Mechanics of the "Afterdrop" Phenomenon

The body protects vital organs during extreme cold by shunting blood away from the skin and limbs via intense vasoconstriction. The limbs become a cold, acidic, lactic-acid and potassium-saturated reservoir sitting at 10°C to 20°C.

If a rescuer rubs the patient's limbs, places them in a hot bath, or forces them to walk:

Peripheral blood vessels dilate instantly.
The stagnant, icy, potassium-rich blood from the limbs flushes directly into the central venous circulation.
The core temperature drops by an additional 1°C to 3°C (afterdrop), while the acidic potassium shock triggers instantaneous, fatal Ventricular Fibrillation (Rescue Collapse).

Always keep the patient horizontal, handle with extreme gentleness, and insulate the trunk.

EMERGENCY DISPATCH NUMBERS