Which intravenous antibiotics are used for MRSA?

Study for the USMLE Step 3 Exam. Master key concepts with flashcards and multiple choice questions including hints and explanations. Prepare for your success!

The correct answer, which includes linezolid and daptomycin, is appropriate for treating Methicillin-resistant Staphylococcus aureus (MRSA) infections.

Linezolid is an oxazolidinone antibiotic that works by inhibiting bacterial protein synthesis, making it effective against a variety of gram-positive bacteria, including MRSA. It is particularly useful in treating complicated skin infections and pneumonia caused by MRSA.

Daptomycin, a lipopeptide antibiotic, disrupts bacterial cell membrane function, which is effective against MRSA as well. It is reserved for severe infections, including endocarditis and bacteremia, and is notable for its activity against resistant strains.

The other options are not suitable for treating MRSA. Vancomycin, which is recognized as a first-line treatment for serious MRSA infections, is unfortunately excluded from the correct answer in this context. Cefazolin, while effective against methicillin-susceptible Staphylococcus aureus (MSSA), does not cover MRSA. Amoxicillin and azithromycin are not effective against MRSA due to resistance issues with beta-lactam antibiotics and the nature of macrolide resistance. Ciprofloxacin and metronidazole are not typically

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy