Nursing Elites

1. A nursing student is learning about the effects of bactericidal agents. How does rifampin (Rifadin) achieve a therapeutic action against both intracellular and extracellular tuberculosis organisms?

• A. It is metabolized in the liver.
• B. It binds to acetylcholine.
• C. It inhibits synthesis of RNA.
• D. It causes phagocytosis.

Correct answer: C

Rationale: Rifampin (Rifadin) achieves a therapeutic action against both intracellular and extracellular tuberculosis organisms by inhibiting the synthesis of RNA. This action interferes with bacterial RNA synthesis, leading to the suppression of protein synthesis in the bacteria, ultimately causing their death. Option A is incorrect because rifampin is primarily metabolized in the liver, but this is not how it exerts its bactericidal effects. Option B is incorrect as rifampin does not bind to acetylcholine. Option D is also incorrect as rifampin does not cause phagocytosis.

2. A patient with a history of osteoporosis is prescribed alendronate (Fosamax). What instructions should the nurse provide to ensure the effectiveness of the medication?

• A. Take the medication with a full glass of water and remain upright for at least 30 minutes to prevent esophageal irritation and ensure proper absorption.
• B. Take the medication with milk to enhance calcium absorption.
• C. Take the medication at bedtime to ensure absorption during sleep.
• D. Take the medication with food to prevent nausea.

Correct answer: A

Rationale: The correct answer is A. Alendronate should be taken with a full glass of water and patients should remain upright for at least 30 minutes to prevent esophageal irritation and ensure proper absorption. Taking the medication with milk (choice B) is not recommended as it may interfere with the absorption of alendronate. Taking the medication at bedtime (choice C) is not necessary for optimal absorption. Taking the medication with food (choice D) is also not recommended as food can reduce the absorption of alendronate.

3. When educating a patient starting on oral contraceptives, what should the nurse include regarding the medication's effectiveness?

• A. Oral contraceptives are 100% effective when taken correctly.
• B. Oral contraceptives are effective immediately after starting.
• C. Oral contraceptives are less effective if taken with antibiotics.
• D. Oral contraceptives are less effective if taken with food.

Correct answer: C

Rationale: The correct answer is C. Oral contraceptives can be less effective when taken with certain antibiotics as they may interfere with the contraceptive's efficacy, potentially leading to decreased effectiveness. Therefore, patients should be advised to use additional contraception methods if they are also taking antibiotics. Choice A is incorrect because while oral contraceptives are highly effective, they are not 100% foolproof. Choice B is incorrect as oral contraceptives may take some time to reach their full effectiveness after starting. Choice D is incorrect since taking oral contraceptives with food does not necessarily impact their effectiveness.

4. Macular degeneration occurs as a result of:

• A. loss of lens accommodation
• B. detachment of the retina
• C. increased intraocular pressure
• D. impaired blood supply leading to cellular waste accumulation and ischemia

Correct answer: D

Rationale: Macular degeneration is a condition that affects the macula, a part of the retina responsible for central vision. It is primarily caused by impaired blood supply to the macula, leading to cellular waste accumulation and ischemia. This results in the death of photoreceptor cells and ultimately vision loss. Choices A, B, and C are incorrect because macular degeneration is not related to the loss of lens accommodation, detachment of the retina, or increased intraocular pressure. The correct answer directly addresses the underlying pathophysiology of macular degeneration.

5. A client asks a nurse about the cause of Parkinson's disease. How should the nurse respond?

• A. Parkinson's disease is caused by a lack of dopamine in the brain, which affects movement.
• B. Parkinson's disease is caused by an excess of acetylcholine in the brain, leading to tremors and rigidity.
• C. Parkinson's disease is caused by an autoimmune response that attacks the nervous system.
• D. Parkinson's disease is caused by a bacterial infection that needs to be treated with antibiotics.

Correct answer: A

Rationale: The correct answer is A. Parkinson's disease is caused by a deficiency of dopamine in the brain, which results in the characteristic motor symptoms such as tremors, rigidity, and bradykinesia. Choice B is incorrect because Parkinson's disease is not caused by an excess of acetylcholine. Choice C is incorrect because Parkinson's disease is not an autoimmune disorder. Choice D is incorrect because Parkinson's disease is not caused by a bacterial infection and cannot be treated with antibiotics.

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