Which condition is most likely to present with altered mental status and slowed vital signs?

• A. Mild Hypothermia
• B. Heat Cramps
• C. Moderate Hypothermia
• D. Exertional Heat Stroke

Answer: (C)

When core temperature falls into the moderate hypothermia range, the brain and metabolic processes slow down, leading to altered mental status such as confusion, drowsiness, or impaired responsiveness. At the same time, the body's metabolic rate decreases, which slows the heart rate and breathing. This combination—cognitive changes plus slowed vital signs—is most characteristic of moderate hypothermia. Mild hypothermia often features shivering and a relatively preserved mental status with less pronounced slowing of vitals. Exertional heat stroke involves high body temperature and CNS dysfunction, but vitals are typically driven by heat stress and are not slowed; heat cramps are mainly painful muscle cramps without significant mental status changes or slowed vital signs. Thus moderate hypothermia best fits the presentation of altered mental status with slowed vital signs.