Final answer:
The drug of choice for pseudomonas aeruginosa UTIs depends on the severity of the infection and the patient's medical history.
Step-by-step explanation:
The drug of choice for pseudomonas aeruginosa urinary tract infections (UTIs) depends on the severity of the infection and the patient's medical history. Generally, a combination therapy with a beta-lactam antibiotic and an aminoglycoside such as gentamicin is recommended for severe cases. Ceftazidime and cefepime are commonly used beta-lactams, while ciprofloxacin and levofloxacin are effective fluoroquinolones. However, the choice of antibiotic should be made by a healthcare professional based on the individual patient's condition and the local antibiotic susceptibility patterns.