Which scenario requires immediate EMS activation?

• A. Minor scrape.
• B. Suspected exertional heat stroke.
• C. Mild muscle soreness.
• D. Cold-induced rhinitis.

Answer: (B)

The critical idea is recognizing a life-threatening heat illness that needs urgent medical transport. Suspected exertional heat stroke happens when intense activity in hot conditions overwhelms the body's cooling ability, causing core temperature to rise rapidly and leading to central nervous system dysfunction (confusion, collapse, seizures). Because brain and organ damage can occur quickly, this scenario requires immediate EMS activation.

In this context, only the suspected exertional heat stroke scenario is an EMS-worthy emergency. The other options—minor scrape, mild muscle soreness, and cold-induced rhinitis—are non-emergent issues that can be managed with basic first aid or routine care. If you suspect heat stroke, stop activity, call for help now, and begin rapid cooling if safe while awaiting EMS.