Pseudomonas aeruginosa is treated with which antibiotic from the list?

Prepare for the CAMLPR Microbiology Test. Utilize flashcards and engaging multiple-choice questions, each equipped with descriptions and explanations. Ready yourself for an excellent performance!

Treating Pseudomonas aeruginosa effectively relies on an antipseudomonal beta-lactam that also resists common lactamases. Piperacillin-tazobactam blends an extended-spectrum penicillin with a beta-lactamase inhibitor, giving strong activity against Pseudomonas and many other Gram-negative bacteria, while the tazobactam component protects the antibiotic from certain enzymes that would otherwise inactivate it. This combination broadens coverage and is commonly used as empiric therapy for suspected Pseudomonas infections, especially in hospitalized patients where reliable, broad-spectrum activity is important.

Ceftazidime can treat Pseudomonas but may be less consistently reliable across strains and lacks some spectrum. Meropenem is highly active against Pseudomonas, including resistant strains, but its broad use can drive resistance and is often reserved for severe or resistant cases. Ciprofloxacin has antipseudomonal activity as well, but increasing resistance and potential issues with monotherapy in serious infections make it a less optimal first-line choice in many settings.

So, the combination of broad antipseudomonal coverage with beta-lactamase inhibition makes Piperacillin-tazobactam a strong, balanced option for Pseudomonas infections.