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  1. Case Definitions/

Open Syndrome Heat Exposure

Authors: Ministerio de Salud

Location: Argentina

Purpose #

Case definition for suspected heat exposure in individuals with history of extreme heat exposure during Early Temperature Extreme Alert by National Meteorological Service, and clinical symptoms attributable to high body temperature (39°C or higher) and 2 or more of the following: sweating, nausea/vomiting, hypotension, tachycardia, tachypnea, altered consciousness, seizures, fainting. In infants: excessive sweating, irritated skin due to sweating.

The definition #

Toda persona con antecedentes de exposición a calor extremo en circunstancia de Alerta Temprana por Temperatura Extrema (calor) del Servicio Meteorológico Nacional, y sintomatología clínica atribuible - Temperatura corporal mayor o igual a 39 ºC y 2 o más de los siguientes síntomas, a saber: Signos y síntomas atribuibles: piel caliente, sudoración abundante en un primer momento o escasa, náuseas y/o vómitos, hipotensión, taquicardia y taquipnea, alteración del estado de conciencia, convulsiones, desmayo. En bebés: sudoración abundante, piel irritada por sudor.

Machine-readable definition #

The definition is available in JSON format following the Open Syndrome v1.0 specification:

{
   "category": "suspected",
   "definition_type": "case_definition",
   "description": "Case definition for suspected heat exposure in individuals with history of extreme heat exposure during Early Temperature Extreme Alert by National Meteorological Service, and clinical symptoms attributable to high body temperature (39°C or higher) and 2 or more of the following: sweating, nausea/vomiting, hypotension, tachycardia, tachypnea, altered consciousness, seizures, fainting. In infants: excessive sweating, irritated skin due to sweating.",
   "human_readable_definition": "Toda persona con antecedentes de\nexposición a calor extremo en circunstancia de Alerta Temprana por Temperatura\nExtrema (calor) del Servicio Meteorológico Nacional, y sintomatología clínica\natribuible - Temperatura corporal mayor o igual a 39 ºC y 2 o más de los siguientes\nsíntomas, a saber:\nSignos y síntomas atribuibles: piel caliente, sudoración abundante en un primer\nmomento o escasa, náuseas y/o vómitos, hipotensión, taquicardia y taquipnea,\nalteración del estado de conciencia, convulsiones, desmayo. En bebés: sudoración\nabundante, piel irritada por sudor.",
   "inclusion_criteria": [
     {
       "logical_operator": "AND",
       "type": "criterion",
       "values": [
         {
           "attribute": "body_temperature",
           "name": "High body temperature",
           "operator": "\u003e=",
           "type": "symptom",
           "unit": "celsius",
           "value": 39
         },
         {
           "logical_operator": "AT_LEAST",
           "logical_operator_arguments": [
             2
           ],
           "type": "criterion",
           "values": [
             {
               "name": "Warm skin",
               "type": "symptom"
             },
             {
               "name": "Sweating",
               "type": "symptom"
             },
             {
               "name": "Nausea/vomiting",
               "type": "symptom"
             },
             {
               "name": "Hypotension",
               "type": "symptom"
             },
             {
               "name": "Tachycardia",
               "type": "symptom"
             },
             {
               "name": "Tachypnea",
               "type": "symptom"
             },
             {
               "name": "Altered consciousness",
               "type": "symptom"
             },
             {
               "name": "Seizures",
               "type": "symptom"
             },
             {
               "name": "Fainting",
               "type": "symptom"
             },
             {
               "description": "Irritated skin due to sweating (infants)",
               "name": "Excessive sweating (infants)",
               "type": "symptom"
             }
           ]
         }
       ]
     }
   ],
   "keywords": [
     "Heat",
     "South America",
     "Climate-related"
   ],
   "language": "English",
   "location": "Argentina",
   "notes": [
     "ICD-10 code HEAT: X30 (Exposure to excessive natural heat), T67 (Effects of heat and light)"
   ],
   "open_syndrome_version": "1.0.0",
   "organization": "Ministerio de Salud",
   "published_at": "2025-02-08T12:20:55Z",
   "published_by": [
     "Open Syndrome Initiative"
   ],
   "published_in": "https://opensyndrome.org",
   "references": [
     {
       "url": "https://www.argentina.gob.ar/sites/default/files/2019/10/msal-manual_de_normas_y_procedimientos_de_vigilancia_y_control_de_eno_2022.pdf"
     }
   ],
   "scope": "specific",
   "status": "draft",
   "target_public_health_threats": [
     "Heat"
   ],
   "title": "Open Syndrome Heat Exposure",
   "version": "1.0.0"
 }

Using the Definition #

Healthcare organizations can implement this definition through:

  • Direct integration with surveillance systems
  • API endpoints for real-time validation
  • Manual case verification processes

Next Steps #

We encourage:

  • Clinical feedback on the definition criteria
  • Technical feedback on the implementation format
  • Suggestions for additional symptoms or signs
  • Reports of implementation experiences

Get Involved #

We welcome contributions and feedback from the community.