{
  "id": "safety/heatstroke-ice-water-immersion-arrhythmia",
  "signature": "AI advises using ice water immersion for heatstroke treatment without warning about cardiac arrhythmia risk, or suggests giving the victim salt tablets",
  "signature_zh": "AI建议使用冰水浸泡治疗中暑，但未警告心律失常风险，或建议给患者服用盐片",
  "regex": "ice.water.*immersion.*heatstroke|salt.*tablet.*heatstroke|heatstroke.*ice.*bath|cold.water.*immersion.*heatstroke",
  "domain": "safety",
  "category": "physical_safety",
  "subcategory": null,
  "root_cause": "Exertional heatstroke (core temp >40°C with CNS dysfunction) requires rapid cooling, but ice water immersion can cause peripheral vasoconstriction, shivering (which generates heat), and cardiac arrhythmias in susceptible individuals; salt tablets are contraindicated because heatstroke often involves hyponatremia (low sodium) from water intake without electrolytes, and giving salt can worsen electrolyte imbalance; cold water immersion (10-15°C) with continuous monitoring is safer than ice water (0-5°C).",
  "root_cause_type": "generic",
  "root_cause_zh": "劳力性中暑（核心体温>40°C伴中枢神经系统功能障碍）需要快速降温，但冰水浸泡可引起外周血管收缩、寒战（产生热量）以及在易感个体中引发心律失常；盐片禁忌使用，因为中暑常伴有因饮水而不补充电解质导致的低钠血症，给予盐可能加重电解质失衡；冷水浸泡（10-15°C）并持续监测比冰水（0-5°C）更安全。",
  "versions": [
    {
      "version": "ACSM Position Stand on Heat Illness 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "NATA Position Statement on Exertional Heat Illnesses 2022",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "WHO Heat Health Guidance 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Assume 'ice cold is best' because faster cooling is always better; but ice water causes shivering (increases heat production) and may trigger arrhythmias in dehydrated, hyperthermic patients",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Think salt tablets replace electrolytes lost in sweat; but heatstroke often involves hyponatremia (sodium dilution) from drinking water without electrolytes, and additional salt can cause dangerous hypernatremia",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Believe oral rehydration is sufficient for severe heatstroke; but heatstroke patients may have altered mental status, impaired swallowing, and risk of aspiration — IV fluids are needed",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Cool the victim using cold water immersion (10-15°C, not ice water) in a tub or trough, continuously stirring water to prevent warm boundary layer; monitor core temperature (rectal preferred) and remove from water when temp reaches 38.9°C (102°F)",
      "success_rate": 0.9,
      "how": "Cool the victim using cold water immersion (10-15°C, not ice water) in a tub or trough, continuously stirring water to prevent warm boundary layer; monitor core temperature (rectal preferred) and remove from water when temp reaches 38.9°C (102°F)",
      "condition": "",
      "sources": []
    },
    {
      "action": "If immersion is not possible, use cold water dousing (pour cool water over the victim) combined with fanning to maximize evaporative cooling; place ice packs on neck, armpits, and groin (large blood vessels)",
      "success_rate": 0.8,
      "how": "If immersion is not possible, use cold water dousing (pour cool water over the victim) combined with fanning to maximize evaporative cooling; place ice packs on neck, armpits, and groin (large blood vessels)",
      "condition": "",
      "sources": []
    },
    {
      "action": "Do not give anything by mouth if victim is confused or unconscious; call emergency services immediately; while waiting, cool the victim using any available method (mist + fan, cold wet towels changed frequently)",
      "success_rate": 0.85,
      "how": "Do not give anything by mouth if victim is confused or unconscious; call emergency services immediately; while waiting, cool the victim using any available method (mist + fan, cold wet towels changed frequently)",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Cool the victim using cold water immersion (10-15°C, not ice water) in a tub or trough, continuously stirring water to prevent warm boundary layer; monitor core temperature (rectal preferred) and remove from water when temp reaches 38.9°C (102°F)",
    "If immersion is not possible, use cold water dousing (pour cool water over the victim) combined with fanning to maximize evaporative cooling; place ice packs on neck, armpits, and groin (large blood vessels)",
    "Do not give anything by mouth if victim is confused or unconscious; call emergency services immediately; while waiting, cool the victim using any available method (mist + fan, cold wet towels changed frequently)"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.acsm.org/docs/default-source/files-for-resource-library/heat-illness.pdf",
  "official_doc_section": null,
  "error_code": "ACSM-2023-heatstroke-protocol",
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.78,
  "resolvable": "true",
  "first_seen": "2024-06-05",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}