The nurse is admitting a client to the acute care floor with methicillin-resistant S. aureus. The nurse would expect the physician to order which of the following medications for the client?
kanamycin (Kantrex)
vancomycin
streptomycin
penicillin
The Correct Answer is B
A. Kanamycin (Kantrex):
Kanamycin is an aminoglycoside antibiotic, but it is not commonly used as a first-line treatment for MRSA infections. Aminoglycosides are not typically preferred for treating MRSA because they are not as effective against these resistant bacteria compared to other agents like vancomycin.
B. Vancomycin:
Vancomycin is a glycopeptide antibiotic and is considered the drug of choice for the treatment of MRSA infections, including serious bloodstream infections, pneumonia, and skin and soft tissue infections. It works by inhibiting cell wall synthesis in bacteria, including MRSA.
C. Streptomycin:
Streptomycin is another aminoglycoside antibiotic, similar to kanamycin. Like kanamycin, streptomycin is not typically used as a first-line treatment for MRSA infections because it is less effective against resistant strains compared to other agents like vancomycin.
D. Penicillin:
Penicillin and other beta-lactam antibiotics are ineffective against MRSA because MRSA is resistant to these antibiotics, including methicillin. Therefore, penicillin would not be an appropriate choice for treating MRSA infections.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Refers to an infection that is resistant to conventional antibiotics:
This statement is partially correct. Acquired resistance does indeed refer to bacteria becoming resistant to antibiotics, but it is not specific to conventional antibiotics. Bacteria can develop resistance to various types of antibiotics, including conventional antibiotics and newer antimicrobial agents.
B. Superinfection that has significant antifungal resistance:
This statement is incorrect. Acquired resistance specifically pertains to bacteria and their ability to resist antibiotics. It does not involve antifungal resistance or superinfections.
C. Refers to a term used for antibiotic coverage:
This statement is incorrect. Acquired resistance is not a term used to describe antibiotic coverage. It describes the phenomenon of bacteria becoming resistant to antibiotics.
D. There is no such phenomenon of acquired resistance:
This statement is incorrect. Acquired resistance is a well-documented phenomenon in microbiology and is a significant challenge in the treatment of bacterial infections. Ignoring or denying the existence of acquired resistance would overlook a critical aspect of antibiotic stewardship and management of bacterial infections.
Correct Answer is B
Explanation
A. Penicillins:
Penicillins are a class of antibiotics commonly used to treat various bacterial infections. While they are generally well-tolerated and have a low incidence of adverse effects, they are not typically associated with cartilage toxicity or tendon rupture, including the Achilles tendon.
B. Fluoroquinolones:
Fluoroquinolones are broad-spectrum antibiotics known for their effectiveness against a wide range of bacteria. However, they are associated with several significant adverse effects, including cartilage toxicity and tendon rupture. These adverse effects, particularly tendon rupture, are most commonly observed in weight-bearing tendons such as the Achilles tendon. Fluoroquinolones should be used cautiously, especially in populations at higher risk for tendon injuries.
C. Aminoglycosides:
Aminoglycosides are another class of antibiotics used to treat severe bacterial infections. While they have their own set of potential adverse effects, such as nephrotoxicity and ototoxicity, they are not associated with cartilage toxicity or tendon rupture.
D. Sulfonamides:
Sulfonamides are antibiotics that inhibit bacterial growth by interfering with the synthesis of folate. While they can cause various adverse effects, including skin reactions and hematologic abnormalities, they are not associated with cartilage toxicity or tendon rupture.
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