Postoperative Hypothermia and Shivering: Risks, Management, and Prevention

Postoperative hypothermia (core temperature <36°C / 96.8°F) and severe shivering are common but potentially dangerous complications affecting up to 40% of surgical patients.

Hypothermia Risks

• Impaired wound healing and increased surgical site infection
• Coagulopathy and increased blood loss
• Cardiac ischemia, arrhythmias
• Prolonged drug metabolism, delayed emergence
• Thermal discomfort, increased oxygen consumption

Shivering Risks

• Oxygen consumption increases 200–500%—dangerous for cardiac/pulmonary compromise
• Increases intracranial and intraocular pressure
• May indicate severe hypothermia, sepsis, or malignant hyperthermia

Active Treatment

• Forced-air warming blankets (primary)
• Warmed IV fluids, irrigating fluids
• Pharmacologic: meperidine (25–50 mg IV) or dexmedetomidine for refractory shivering
• Severe cases: intensive care monitoring

Prevention Bundle (Perioperative)

• Prewarm patient 30–60 min pre-op
• Maintain OR temperature >21°C
• Warmed IV/irrigation fluids (>37°C)
• Forced-air warming intraoperatively
• Minimize exposed body surface
• Core temperature monitoring throughout
• Post-op warming in PACU until normothermic

Multimodal prevention is standard of care; shivering is a late sign—prevent hypothermia proactively.