A nurse is instructing a colleague on how an antimicrobial produces a therapeutic effect. What should be included in the nurse's teaching?
The first drugs used to treat infections date back to the 17th century.
Fluoroquinolones interfere with the growth and development of the bacteria cell wall.
Selective toxicity determines the appropriate drug dosage needed.
Penicillin interferes with synthesis of the bacteria cell wall.
The Correct Answer is D
A. While historical context is useful, the development of antimicrobials primarily began in the early 20th century, notably with penicillin discovered by Alexander Fleming in 1928.
B. This statement is incorrect; fluoroquinolones primarily inhibit bacterial DNA synthesis rather than directly affecting the cell wall.
C. Selective toxicity is a principle of antimicrobial action but does not directly explain how a specific antimicrobial works therapeutically.
D. Penicillin specifically interferes with the synthesis of the bacterial cell wall, leading to cell lysis and death of the bacteria, which is a fundamental mechanism of action for this antibiotic.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Take the drug on an empty stomach is correct because tetracycline should be taken without food for optimal absorption, ideally 1 hour before or 2 hours after meals.
B. Take the drug along with a meal is incorrect as it can reduce the absorption of tetracycline.
C. Take the drug along with milk or fruit juice is incorrect because calcium and magnesium can bind to tetracycline, decreasing its effectiveness.
D. Take the drug immediately after meals is also incorrect as food can hinder absorption, making this timing ineffective for treatment.
Correct Answer is B
Explanation
A. The statement regarding antiviral drugs not preventing the spread of the disease is accurate, as these medications do not eliminate the virus or prevent transmission.
B. Saying that antivirals are the cure for viral infections is incorrect; while they can reduce symptoms and viral load, they do not cure the infection.
C. The instruction about topical antivirals not being applied more frequently than prescribed is correct and reflects safe medication use.
D. The recommendation to use a finger cot or gloves when applying topical antivirals is correct to prevent contamination and ensure proper application.
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