Which of the following gram-negative agents is commonly associated with UTIs in the elderly?

Pseudomonas aeruginosa is commonly associated with urinary tract infections (UTIs) in the elderly due to its prevalence in hospital settings and its ability to thrive in various environments, including the urinary tract. This gram-negative bacterium is notorious for its resistance to multiple antibiotics, which can complicate treatment strategies. In elderly patients, factors such as decreased immunity, the presence of urinary catheters, and other chronic conditions can increase susceptibility to infections caused by Pseudomonas.

In hospitalized or long-term care settings, where this pathogen is frequently encountered, there is a higher likelihood of UTIs caused by Pseudomonas, especially in patients with risk factors that include prior antibiotic use and indwelling devices. Therefore, recognizing Pseudomonas as a potential pathogen in this population is crucial for appropriate diagnosis and management.