Characterisation and risk-factor profiling of P. aeruginosa urinary tract infections: pinpointing those likely to be caused by multidrug-resistant strains

Abstract Objectives To characterise urinary tract infections (UTIs) caused by Pseudomonas aeruginosa in hospitalised adults and identify risk factors for those caused by multidrug-resistant (MDR) strains. Methods A retrospective case-case-control study was conducted in two teaching hospitals. Results 242 monomicrobial P. aeruginosa UTIs were analysed, 65 (26.8%) of which were caused by MDR strains. Clinical treatment failure at 72 h was more frequent in MDR cases (38/65 [58.4%] vs. 45/177 (25.4%) in non-MDR cases, p= Conclusions Risk-factor assessment can identify UTIs in hospitalised patients likely to be caused by MDR P. aeruginosa strains, thereby facilitating targeted infection-control and timelier, effective treatment of these infections.