Staphylococcus aureus was isolated from a patient's surgical wound.In a disk diffusion assay,the isolate was found to be resistant to cefoxitin (30 µg disk).With which antibiotic should this patient's infection be treated?
A)Oxacillin
B)Methicillin
C)Vancomycin
D)Cephalosporin

Question

Quizplus · Accepted Answer

Oxacillin resistance is often detected by the use of 30 µg cefoxitin disk in the disk diffusion or 4 ug/mL cefoxitin in broth dilution methods.Methicillin-resistant S.aureus are considered resistant to all β-lactam antibiotics (penicillins and cephalosporins).Vancomycin is the drug of choice for strains that are resistant to β-lactam antibiotics.

Staphylococcus Aureus Was Isolated from a Patient's Surgical Wound