At this point, a thorough evaluation searching for non-urinary tract and urinary tract sources of infection has found no clear etiology

The potential nonspecific signs and symptoms of CA-UTI make it is reasonable to evaluate and treat for a UTI when there are high risk features:

• Fever lasting 24 hours or more
• Rigors/shaking chills
• Clear cut delirium (not just change in mental status) after ruling out other causes – please see Delirium Guide

In absence of red flags, “when no alternate source of symptoms is identified in patients with CA-bacteriuria, it is reasonable to monitor symptoms and treat if symptoms to do not resolve.” IDSA ASB Guidelines 2009 – Symptoms and signs suggestive of UTI in catheterized patient