Which practice is not recommended for preventing hypothermia and shivering in the perioperative period?

Which practice is not recommended for preventing hypothermia and shivering in the perioperative period?

• A. Pre-warm the patient
• B. Use warming blankets
• C. Inducing hypothermia to reduce metabolic rate
• D. Pharmacologic measures to reduce shivering

Answer: (C)

Maintaining normal body temperature is essential in the perioperative period because hypothermia worsens outcomes and shivering increases oxygen consumption and stress on the heart. Proactive warming helps prevent heat loss: pre-warming before anesthesia reduces the initial core-to-shell temperature drop, and using warming blankets or forced-air warming keeps core temperature more stable. Pharmacologic measures to reduce shivering, such as certain opioids or alpha-2 agonists, are used to blunt the body's shivering response and improve comfort and stability. Deliberately inducing hypothermia to reduce metabolic rate is not a recommended strategy for preventing hypothermia and shivering in most perioperative settings. Lowering the core temperature introduces its own risks—coagulopathy, increased infection risk, cardiac arrhythmias, and the need for aggressive rewarming—without reliably preventing perioperative hypothermia or shivering. In short, controlled warming and anti-shivering pharmacology address the problem effectively, while intentional cooling does the opposite.

Maintaining normal body temperature is essential in the perioperative period because hypothermia worsens outcomes and shivering increases oxygen consumption and stress on the heart. Proactive warming helps prevent heat loss: pre-warming before anesthesia reduces the initial core-to-shell temperature drop, and using warming blankets or forced-air warming keeps core temperature more stable. Pharmacologic measures to reduce shivering, such as certain opioids or alpha-2 agonists, are used to blunt the body's shivering response and improve comfort and stability.

Deliberately inducing hypothermia to reduce metabolic rate is not a recommended strategy for preventing hypothermia and shivering in most perioperative settings. Lowering the core temperature introduces its own risks—coagulopathy, increased infection risk, cardiac arrhythmias, and the need for aggressive rewarming—without reliably preventing perioperative hypothermia or shivering. In short, controlled warming and anti-shivering pharmacology address the problem effectively, while intentional cooling does the opposite.