Catheter-Associated Urinary Tract Infections By Talha H Imam, MD, University of Riverside School of Medicine Reviewed / Revised Jul 2021 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Prevention Key Points A catheter-associated urinary tract infection (UTI) is a UTI in which the positive culture was taken when an indwelling urinary catheter had been in place for > 2 calendar days.