Sedation disrupts thermoregulation, making hypothermia more likely. What effect does sedation have on thermoregulation?

• A. It disrupts the thermoregulatory center, increasing the risk of hypothermia
• B. It increases risk of fever
• C. It has no effect on body temperature
• D. It causes hyperthermia in all patients

Answer: (A)

Sedation depresses central nervous system function, including the hypothalamus that acts as the body's thermostat. With reduced CNS activity, the body’s normal heat-generating and heat-conserving responses—shivering and vasoconstriction—are blunted, and metabolic heat production can fall. This weakened thermoregulation makes patients more prone to losing heat and becoming hypothermic, especially in cool environments or during longer procedures. So the best description is that sedation disrupts the thermoregulatory center, increasing the risk of hypothermia. Fever is not a direct, typical consequence of sedation, and hyperthermia is not expected in all patients; sedation mainly impairs the ability to maintain normal temperature.