A patient you are caring for in the ICU has been diagnosed with pneumonia caused by Staphylococcus aureus.She was given a course of methicillin but has not shown any clinical or microbiological improvement.The most appropriate drug to treat her condition is:

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Quizplus · Accepted Answer

Methicillin-resistant Staphylococcus aureus (MRSA) is a type of bacteria that does not respond to methicillin, so it is not surprising that the patient did not respond to methicillin treatment. Vancomycin is the drug of choice for serious MRSA infections, such as pneumonia. Tobramycin may be used in combination with vancomycin in some cases, but it is not the first-line treatment for MRSA pneumonia. Erythromycin and Zithromax are not effective against MRSA, so they would not be appropriate for this patient.

A Patient You Are Caring for in the ICU Has