Which is a potential late outcome of hypothermia?

• A. Loss of consciousness
• B. Rapid heartbeat
• C. Increased energy
• D. Normal skin color

Answer: (A)

When the body cools in hypothermia, the brain becomes increasingly depressed. This progressive decline in CNS function is why loss of consciousness can occur as a late outcome. Early in hypothermia the body tries to generate heat, so things like shivering and a faster heart rate are common. As cooling continues, shivering stops and mental status deteriorates, leading to lethargy and eventual loss of consciousness. The other options don’t fit as late signs: rapid heartbeat is more typical early as a compensatory response; increased energy doesn’t occur with cooling; and normal skin color is unlikely because skin becomes pale or bluish due to reduced perfusion from vasoconstriction.