Alcohol can place a patient at greater risk for temperature-related emergencies by which mechanism?

• A. By increasing fluid loss
• B. By increasing metabolic rate
• C. By reducing skin temperature
• D. By impairing sweating

Answer: (A)

Alcohol disrupts temperature regulation mainly by acting as a diuretic, which leads to greater fluid loss and dehydration. When fluid volume declines, blood volume and electrolyte balance are affected, making it harder for the body to regulate core temperature effectively. Dehydration impairs the body’s ability to conserve heat in cold environments and to dissipate heat in hot environments, increasing the risk of temperature-related emergencies. While other effects of alcohol, like vasodilation or impaired sweating, can also influence heat balance, the dehydration from increased fluid loss is the primary mechanism that elevates risk.