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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Cyclobenzaprine is commonly prescribed for the relief of muscle spasms related to acute musculoskeletal conditions. It is a muscle relaxant.
Choice B rationale
This choice is incorrect as cyclobenzaprine is not used for malignant hyperthermia. Dantrolene is the medication used for this condition.
Choice C rationale
Cyclobenzaprine is not indicated for spasticity related to cerebral palsy, spinal cord injury, or multiple sclerosis. Other medications like baclofen or dantrolene are used for these conditions.
Choice D rationale
Not all the above choices are correct; hence this is incorrect. .
Correct Answer is A
Explanation
Choice A rationale
Warfarin is an anticoagulant that is used to prevent venous thrombosis and thromboembolic events by inhibiting the synthesis of vitamin K-dependent clotting factors.
Choice B rationale
Warfarin is not used to prevent angina pectoris, which is typically managed with nitrates, beta-blockers, or calcium channel blockers.
Choice C rationale
Warfarin is not used to treat bradycardia, which is usually managed with medications like atropine or pacemaker implantation.
Choice D rationale
Warfarin is not used to treat hypertension. Antihypertensive medications such as ACE inhibitors, beta-blockers, or diuretics are used for this purpose.
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