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Case 6: Methicillin-Resistant Staphylococcus aureus (MRSA) Skin and Soft Tissue Infections

You answered:

B More than 30% of the isolates from skin and soft tissue infections have shown resistance to trimethoprim-sulfamethoxazole (Bactrim, Septra).

This answer is incorrect. Resistance rates of community-acquired MRSA to trimethoprim-sulfamethoxazole have been low, certainly less than 30%.

Choose another answer:

A Resistance to methicillin and cephalexin results from production of an altered penicillin-binding protein by S. aureus that has reduced affinity for binding to beta-lactam antibiotics.
C Ciprofloxacin (Cipro) is one of the preferred oral regimens.
D In a patient allergic to trimethoprim-sulfamethoxazole, azithromycin (Zithromax) is considered the preferred alternative.

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