A nurse is caring for a client who is prescribed ciprofloxacin for bacteremia.What is the mechanism of action for this medication?
This medication is bactericidal due to inhibition of an enzyme necessary for DNA replication.
This medication accelerates bacterial growth.
This medication is a diuretic that works on the distal tubule of the nephron.
This medication is a beta-blocker that blocks beta-2 receptors, which results in a lower heart rate and blood pressure.
The Correct Answer is A
Choice A rationale
Ciprofloxacin is a bactericidal antibiotic that works by inhibiting DNA gyrase, an enzyme necessary for DNA replication in bacteria. This prevents bacterial cells from replicating and ultimately leads to their death.
Choice B rationale
Ciprofloxacin does not accelerate bacterial growth; instead, it inhibits growth by preventing DNA replication.
Choice C rationale
Ciprofloxacin is not a diuretic. Diuretics work on the kidneys to increase urine production, but ciprofloxacin targets bacterial DNA replication.
Choice D rationale
Ciprofloxacin is not a beta-blocker and does not lower heart rate or blood pressure. Beta-blockers work by blocking beta-adrenergic receptors in the heart.
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Related Questions
Correct Answer is D
Explanation
Choice A rationale
Metoprolol is a beta-blocker used to manage hypertension and other cardiovascular conditions, but it is not a vasodilator used for hypertensive crises.
Choice B rationale
Metformin is an oral hypoglycemic agent used to manage type 2 diabetes and has no role in treating hypertension or hypertensive crises.
Choice C rationale
Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor used to manage hypertension and heart failure, but it is not typically used for hypertensive crises.
Choice D rationale
Nitroglycerin is a potent vasodilator used to rapidly lower blood pressure in hypertensive crises. It works by dilating blood vessels, thus reducing blood pressure effectively. .
Correct Answer is D
Explanation
Choice A rationale
Anaphylaxis is a severe, potentially life-threatening allergic reaction. Fluticasone is not used for treating anaphylaxis.
Choice B rationale
Insomnia is a sleep disorder. Fluticasone is not used for treating insomnia.
Choice C rationale
Motion sickness is a condition that occurs in response to certain kinds of movement. Fluticasone is not used for treating motion sickness.
Choice D rationale
Fluticasone (Flonase) is a corticosteroid used to reduce the effects of allergies, including sneezing, nasal itching, and runny nose. It works by reducing inflammation in the nasal passages.
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