An unconscious but awake teenager experiences fainting after exertion in temperatures around 95°F with high humidity. On arrival, skin is cool, clammy, pale, and the patient reports nausea and headache. What is the most appropriate immediate action?

• A. Move him into the cooled ambulance
• B. Administer ice-cold intravenous fluids on scene
• C. Leave him in place while you assess vitals
• D. Cover him with a blanket and monitor outside

Answer: (A)

Rapid cooling in a cooler environment is the key when someone overheats after exertion. The teen’s symptoms—fainting after activity in hot, humid conditions, plus nausea, headache, and cool, clammy skin—fit exertional heat illness with impending dehydration. Moving him into the cooled ambulance promptly removes him from the hot environment and starts cooling immediately while you assess and monitor him. This prevents the condition from worsening toward heat stroke and gives you a controlled space to continue treatment.

Leaving him outside or covering him with a blanket would trap heat and delay cooling, making things worse. Administering ice-cold IV fluids on scene isn’t the immediate priority here; fluids may be needed if he shows signs of dehydration or shock, but the first step is to reduce core temperature by getting him into a cooler environment and initiating cooling, then proceed with appropriate monitoring and transport.