Management of Shivering in Fever Patients

Initial Assessment and Interventions

The American College of Critical Care Medicine recommends measuring core temperature to confirm fever (≥38.0°C suggests possible infection requiring evaluation) 1
Assess for infection sources, such as wound sites, respiratory status, IV cannula sites for phlebitis, and obtain blood cultures if fever is present 1
Rule out sepsis if temperature ≥38.0°C with associated shivering, as this requires prompt antibiotics 1, 2

The American College of Critical Care Medicine recommends surface counterwarming of extremities to reduce shivering threshold without sedation 1
Ensure adequate ambient temperature and use warmed IV fluids if the patient is receiving fluid resuscitation 1
NSAIDs (ibuprofen or similar) are the preferred initial agents for pain-related or fever-related shivering 3, 1
Meperidine 25-50 mg IV is the most effective single agent, stopping shivering in nearly 100% of patients within 5 minutes 1
Meperidine is approximately 2,800 times more effective at inhibiting shivering than predicted by its analgesic potency alone 1

Shivering reduces brain tissue oxygenation and causes cerebral metabolic stress, potentially negating neuroprotective benefits in traumatic brain injury or neurologic injury patients 3
When ICP is labile and shivering is detected, neuromuscular blockers should be considered after ensuring appropriate depth of sedation 3
Shivering doubles metabolic rate and nearly triples oxygen consumption, creating significant energy supply-demand mismatch in patients with cardiovascular or respiratory compromise 2, 4
Aggressive shivering control is particularly important in these populations to prevent cardiovascular decompensation 2

Do not rely on acetaminophen or magnesium alone for clinically significant shivering—these are adjuncts only 1
Do not administer neuromuscular blockers without adequate sedation, as this risks patient awareness and does not address the central thermoregulatory drive 3
Do not ignore shivering in neurologically injured patients, as it can worsen secondary brain injury 3