Snake Bite First Aid: Why Ice Is Harmful & Correct Protocol

Ice on Snake Bites: Dangerous Myth

Applying ice/cold packs to a venomous snake bite worsens outcomes:

• Vasoconstriction concentrates venom locally → increased tissue necrosis.
• Slows systemic absorption paradoxically delaying antivenom efficacy (venom remains depot).
• Cold‑induced tissue injury (frostbite) compounds venom damage.
• False reassurance delays definitive care (antivenom).

Evidence‑Based First Aid (AHA / Wilderness Medical Society)

1. Scene safety: Move away from snake; do not attempt capture.
2. Call 911 / activate EMS – antivenom only in hospital.
3. Immobilize: Splint bitten limb at heart level (or slightly below).
4. Remove constrictions: Rings, watches, tight clothing.
5. Keep victim calm, supine. Anxiety increases circulation.
6. Mark leading edge of swelling every 15 min with time.
7. Do NOT: Ice, tourniquet, incision/suction, electricity, alcohol, NSAIDs (may worsen coagulopathy), herbal remedies.

Hospital Management

• Antivenom (CroFab / Anavip for crotalids; specific for coral/exotics).
• Coagulation monitoring, wound care, compartment syndrome watch.
• Tetanus update.

Time to antivenom is the single biggest predictor of outcome. Ice wastes precious minutes.