Heat Exhaustion


Signs and Symptoms of Heat Emergencies
Heat Cramps Heat Exhaustion Heat Stroke
Muscle cramps

Normal to mildly elevated temperature

Sweating

Symptoms seen in heat cramps plus:

Normal to elevated temperature [<40°C (<104°F)]

Nausea, vomiting, headache, malaise, dizziness

Orthostatic hypotension

Symptoms seen in heat exhaustion plus:

Elevated temperature [>40°C (>104°F)]

Neurologic abnormalities: inappropriate behavior, confusion, delirium, ataxia, coma, seizures

Anhidrosis or sweating

Background

Diagnostics

Treatment

  1. Cool environment
  2. Rest
  3. Normal saline PO or IV
  4. May need IV K, Mg, Ca

Disposition / Follow-Up

  1. Excellent prognosis since major organ systems are minimally affected
  2. D/c home after fluids & lytes repleted