Fever Management in Critically Ill Patients

Introduction to Fever Management

Fever management is crucial in critically ill patients, particularly those with neurological conditions, as fever may worsen outcomes 1, 2
The American Heart Association/American Stroke Association recommends treating sources of fever and administering antipyretic medications to reduce temperature in febrile patients with stroke (Class I, Level of Evidence C) 3, 2

IV paracetamol is indicated for fever management when oral administration is not feasible or when rapid temperature reduction is needed, particularly in critically ill patients with neurological conditions 1, 2
IV paracetamol is recommended for reactive fever control in sedated and ventilated patients with severe Traumatic Brain Injury (TBI) 4
IV paracetamol is indicated for fever management in ischemic stroke patients 2

Target temperature variation should be maintained within ±0.5°C per hour and ≤1°C per 24-hour period in severe TBI patients 4
Automated feedback-controlled devices are preferred over antipyretics alone for optimal temperature management in severe TBI 4

In patients with infection, moderate fever (38-39.4°C) may be beneficial for immune response 1
Fever plays a protective role in certain infections by inhibiting replication of pathogens like N. meningitidis and S. pneumoniae 1
The presence of fever is associated with worse outcomes in patients with intracerebral hemorrhage, making its treatment a reasonable clinical practice 5, 3

In septic patients, IV paracetamol can decrease temperature by approximately 0.3°C, but does not affect mortality or ICU length of stay 1
In patients with intracerebral hemorrhage, the European Stroke Organisation (ESO) indicates that there is insufficient evidence to make strong recommendations on preventive or early treatment of fever, with a low quality of evidence and a weak recommendation 5
Paracetamol (acetaminophen) is the most commonly used antipyretic, although the PAIS-1 trial did not show significant benefit in patients with intracerebral hemorrhage (adjusted OR 1.20; 95% CI: 0.96-1.50) 5

Patients with intracerebral hemorrhage and fever should be monitored in an intensive care unit due to the severity of the condition (Class I, Level of Evidence B) 3