Final answer:
The nurse should question the prescription of ciprofloxacin if the client has an underlying condition of carbapenem-resistant bacteria.
Step-by-step explanation:
If the client has an underlying condition of carbapenem-resistant bacteria, the nurse should question the prescription of ciprofloxacin for the pseudomonas aeruginosa infection of the urinary tract. This is because ciprofloxacin belongs to the fluoroquinolone class of antibiotics, and pseudomonas aeruginosa strains that are resistant to carbapenems are also often resistant to fluoroquinolones. In such cases, alternative antibiotics that are effective against carbapenem-resistant bacteria should be considered.