Evaluation for infectious (other than VAP) and noninfectious causes of fever

Action to be considered
Changing and/or culturing intravenous lines
CT scan of sinuses, with fine needle aspirate if abnormal
Evaluation for venous thromboembolism
Clostridium difficile evaluation if diarrhea present
Abdominal ultrasound and/or CT scan (especially in the case of abnormal abdominal physical examination, abnormal liver function tests, elevated lipase/amylase, or presence of predisposing factors (abdominal surgery, pancreatitis, gastrointestinal bleed or malignancy, or high-dose corticosteroids)
Lumbar puncture (especially in the case of a predisposing factor such as head trauma or neurosurgical procedure)
Drug fever