{
  "id": "emergency/heatstroke-ice-immersion-depth",
  "signature": "AI tells user to submerge heatstroke victim in ice water only up to waist, but full immersion to neck (excluding head) is recommended",
  "signature_zh": "AI告诉用户仅将中暑患者浸泡在冰水中至腰部，但推荐完全浸泡至颈部（不包括头部）",
  "regex": "heatstroke|ice water|immersion|submerge|waist",
  "domain": "emergency",
  "category": "life_safety",
  "subcategory": null,
  "root_cause": "The AI incorrectly limits immersion depth to avoid hypothermia or shock, but for exertional heatstroke (core temp >40°C/104°F), full-body immersion in ice water (1-4°C/34-39°F) up to the neck is the gold standard per ACSM 2023 guidelines, as it maximizes heat transfer via convection and conduction.",
  "root_cause_type": "generic",
  "root_cause_zh": "AI错误地限制浸泡深度以避免低温或休克，但对于劳力性中暑（核心体温>40°C/104°F），根据ACSM 2023指南，将全身浸泡在冰水中（1-4°C/34-39°F）至颈部是金标准，因为它通过对流和传导最大化热传递。",
  "versions": [],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Some apply ice packs only to armpits and groin, which is insufficient for rapid cooling (rate ~0.1°C/min vs. 0.2-0.3°C/min for full immersion).",
      "fail_rate": 0.75,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Others use cool (not ice) water or fanning alone, which fails to lower core temp quickly enough, risking organ damage.",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "A few cover the head with ice water, which can cause aspiration or shivering, increasing metabolic heat production.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Fill a tub or large container with ice and cold water (1-4°C). Immerse victim up to the neck (head above water). Stir water continuously to prevent ice layer formation. Monitor for shivering; if occurs, reduce immersion slightly but continue cooling. Example: 'Fill bathtub with ice and cold water, have victim sit with chin above water, stir water with your hand.'",
      "success_rate": 0.9,
      "how": "Fill a tub or large container with ice and cold water (1-4°C). Immerse victim up to the neck (head above water). Stir water continuously to prevent ice layer formation. Monitor for shivering; if occurs, reduce immersion slightly but continue cooling. Example: 'Fill bathtub with ice and cold water, have victim sit with chin above water, stir water with your hand.'",
      "condition": "",
      "sources": []
    },
    {
      "action": "If full immersion is impossible, use ice-water-soaked towels over entire body (except face), changing every 2-3 minutes, with fans blowing over wet skin for evaporative cooling.",
      "success_rate": 0.75,
      "how": "If full immersion is impossible, use ice-water-soaked towels over entire body (except face), changing every 2-3 minutes, with fans blowing over wet skin for evaporative cooling.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Once core temp reaches 39°C/102°F (if measurable), remove from ice water to prevent overcooling. Continue monitoring.",
      "success_rate": 0.85,
      "how": "Once core temp reaches 39°C/102°F (if measurable), remove from ice water to prevent overcooling. Continue monitoring.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "用冰和冷水（1-4°C）填满浴缸或大容器。将患者浸泡至颈部（头部在水面上）。持续搅拌水以防止冰层形成。监测寒战；如果发生，稍微减少浸泡但继续降温。示例：'用冰和冷水填满浴缸，让患者坐下，下巴在水面上，用手搅拌水。'",
    "如果无法全身浸泡，使用冰水浸湿的毛巾覆盖全身（除面部），每2-3分钟更换一次，并用风扇吹湿皮肤进行蒸发冷却。",
    "一旦核心体温达到39°C/102°F（如果可以测量），从冰水中移出以防止过度冷却。继续监测。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.acsm.org/docs/default-source/files-for-resource-library/exertional-heatstroke-guidelines.pdf",
  "official_doc_section": null,
  "error_code": "HEATSTROKE-IMMERSE-ERR-002",
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.78,
  "resolvable": "true",
  "first_seen": "2025-07-20",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}