Evaluating the Safety of Performing Flexible Cystoscopy When Urinalysis Suggests Presence of "Infection": Results of a Prospective Clinical Study in 2350 patients.

Background: There is significant underutilisation of allocated health service resources when a scheduled flexible cystoscopy (FC) is cancelled because a pre-cystoscopy urinalysis (PCU) suggests "infection", despite patients being asymptomatic for urinary tract infection (UTI).

Objective: To evaluate the risk of UTI or urinary sepsis when FC is performed in asymptomatic patients with a PCU positive for leucocyte esterase and/or nitrites.

Design Setting And Participants: A prospective cohort study was conducted in a high-volume UK centre recruiting all patients undergoing outpatient FC.