Which antibiotic is listed for pseudomonas UTI?

• A. Tetracycline
• B. Amoxicillin
• C. Cephalexin
• D. Doxycycline

Answer: (A)

Pseudomonas UTIs require antibiotics with true anti-pseudomonal activity because this organism has inherent defenses (low permeability, efflux pumps, and beta-lactamases) that make many common antibiotics ineffective. Among typical oral options, most do not reliably cover Pseudomonas. Cephalexin (a first-generation cephalosporin) and amoxicillin generally fail against Pseudomonas; doxycycline and tetracycline have variable, often insufficient activity and are not considered reliable for pseudomonal UTIs. In real-world practice, treatment relies on agents with proven anti-pseudomonal activity (such as certain fluoroquinolones like ciprofloxacin if susceptible, anti-pseudomonal beta-lactams, or other agents chosen based on susceptibility data). If a question lists these four options, none provide dependable coverage, and the best approach is to select an anti-pseudomonal agent guided by local resistance patterns and patient factors.