The drug of choice for methicillin-resistant staphylococcus aureus (MRSA) is:

Gentamicin

Nafcillin

Vancomycin

Penicillin

Answer and Explanation

The Correct Answer is C

A. Gentamicin: Gentamicin is an aminoglycoside antibiotic effective against many bacteria, but it's not the first choice for MRSA. Vancomycin or other alternatives are preferred due to the rising resistance of MRSA to gentamicin.

B. Nafcillin: Nafcillin is a penicillin antibiotic, often used for penicillin-sensitive staphylococcal infections. However, it is not effective against MRSA, which is resistant to many penicillin-based antibiotics.

C. Vancomycin: Vancomycin is a glycopeptide antibiotic used to treat a variety of bacterial infections, including MRSA. It works by inhibiting cell wall synthesis in bacteria, making it effective against Gram-positive bacteria that have developed resistance to other antibiotics like methicillin (which MRSA has).

D. Penicillin: Penicillin is a group of antibiotics that includes drugs like amoxicillin and ampicillin. MRSA is resistant to penicillin-based antibiotics, so they are not effective against MRSA infections.

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Correct Answer is A

Explanation

A. Discoloration of teeth: Tetracycline antibiotics can bind with calcium ions in teeth, leading to the development of yellow-gray-brown stains. This effect is particularly significant in developing teeth in children below the age of 8 and can result in permanent discoloration.

B. Anabolic change: This term doesn't specifically relate to the side effects of tetracycline. "Anabolic" generally refers to processes in the body that build up complex molecules from simpler ones. There's no direct connection between tetracycline and anabolic changes.

C. Cartilage damage: Tetracyclines, especially in high doses or with prolonged use, have been associated with potential adverse effects on cartilage. This is more relevant in individuals whose bones and cartilage are still growing, such as children. It can interfere with skeletal development.

D. Suppression of growth: Long-term use of tetracycline in children can interfere with bone growth and development. It can suppress the growth of bones and affect overall height. This is a significant concern when considering the use of tetracycline in pediatric patients.

A. "This drug has a longer duration of action than some of the other antibiotics." B. "This is a much more effective drug than what you received previously." C. "I'll call the pharmacy and ask about the chemical makeup of the drug." D. "You'll need to ask your healthcare provider questions like that."

Correct Answer is A

Explanation

A. "This drug has a longer duration of action than some of the other antibiotics."
Explanation: Azithromycin, a macrolide antibiotic, has a longer half-life in the body compared to some other antibiotics. Half-life refers to the time it takes for half of the drug to be eliminated from the body. A longer half-life means the drug remains effective for a longer duration, allowing for less frequent dosing.

B. "This is a much more effective drug than what you received previously."
Explanation: While azithromycin is effective against a wide range of bacterial infections, it's not accurate to say it's universally more effective than other antibiotics. The choice of antibiotic depends on the specific type of infection and the susceptibility of the bacteria causing it. Effectiveness varies based on the context of use.

C. "I'll call the pharmacy and ask about the chemical makeup of the drug."
Explanation: While understanding the chemical makeup of drugs is important for healthcare professionals, it might not directly answer the patient's question about the dosing frequency. Explaining the drug's pharmacological properties, such as its duration of action, would provide a more relevant and understandable response to the patient's query.

D. "You'll need to ask your healthcare provider questions like that."
Explanation: This response does not provide the patient with the information they seek. Nurses are valuable resources for medication-related questions and should strive to provide accurate and understandable explanations to patients.

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The drug of choice for methicillin-resistant staphylococcus aureus (MRSA) is:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse who is working in a pediatric unit administers tetracycline [Sumycin] to a preschool-age child. What is a potential adverse effect of the medication for this child?

Correct Answer is A

Explanation

A patient has been ordered azithromycin [Zithromax] and asks the nurse why the medication does not have to be taken as often as other antibiotics that have previously been ordered. What is the nurse's best response?

Correct Answer is A

Explanation

Your patient is on long-term prednisone therapy. This patient should have frequent follow-up office visits to assess for which of the following?

Which statement by a patient makes the nurse aware of a need for further education about drug resistance in antimicrobial therapy?

A kidney transplant recipient stops immunosuppressive therapy three years after his surgery. Shortly after stopping therapy, he demonstrated clinical manifestations of kidney failure. Which type of reaction does this represent?

The nurse is caring for a patient on a medical-surgical unit who has a fever of unknown origin. The prescriber has ordered a broad-spectrum antibiotic. Which intervention is the priority?

While instructing a patient about antibiotic therapy, the nurse explains to the patient that bacterial resistance to antibiotics can occur when:

Which one of the following types of immunoglobulins is involved in inflammatory and allergic responses?

Which of the following are ways that pathogens can evade the immune system? (Select all that apply)

The nurse is setting up an intravenous infusion pump to administer a dose of vancomycin [Vancocin] to a patient. What is the fastest rate at which the drug may be infused?