Question

A diabetic patient developed cellulitis due to Staphylococcus aureus, which was found to be methicillin-resistant on antibiotic sensitivity testing. All the following antibiotics will be appropriate EXCEPT:

• A. \( \text{Vancomycin} \)
• B. \( \text{Imipenem} \)
• C. \( \text{Teicoplanin} \)
• D. \( \text{Linezolid} \)

Hint:

MRSA treatment typically involves glycopeptides (e.g., vancomycin), oxazolidinones (e.g., linezolid), or newer agents like daptomycin.

Answer 1

The Correct Option is B

Methicillin-resistant Staphylococcus aureus (MRSA) infections require specific antibiotics that target resistant bacterial strains. Vancomycin, teicoplanin, and linezolid are effective against MRSA, whereas imipenem is ineffective. Beta-lactam antibiotics, including carbapenems like imipenem, are generally not used for MRSA due to resistance mechanisms.