Heat exhaustion occurs when the body cannot dissipate heat, leading to overheating. Which of the following is true?

• A. The body cannot dissipate heat leading to overheating
• B. The body stops sweating
• C. The heart stops pumping
• D. There is no risk of death

Answer: (A)

Heat exhaustion happens when the body's cooling mechanisms can't keep up with heat production or environmental heat, causing overheating. This is true because cooling relies on sweat evaporation and skin blood flow, and dehydration, heavy work, or protective gear can overwhelm those processes, leading to overheating. In hazmat work, protective ensembles can trap heat and slow cooling, making overheating more likely. You may still be sweating during heat exhaustion, and the heart doesn't stop beating; however, the condition can progress to heat stroke if not treated promptly. There is a real risk of serious injury or death if cooling and hydration aren’t addressed quickly. The other statements don’t fit because sweating can continue, the heart doesn’t stop, and there is a definite risk of severe outcomes.