Nursing Elites

1. What is the action of amphotericin B?

• A. It binds to ergosterol and forms holes in the membrane.
• B. It binds to an enzyme required for the synthesis of ergosterol.
• C. It disrupts the fungal cell walls rather than the cell membrane.
• D. It inhibits glucan synthetase required for glucan synthesis.

Correct answer: A

Rationale: Amphotericin B is an antifungal medication that acts by binding to ergosterol, a component of fungal cell membranes, forming pores that disrupt the integrity of the membrane. This action leads to leakage of cellular contents and ultimately cell death. Choice B is incorrect as amphotericin B does not bind to an enzyme required for the synthesis of ergosterol. Choice C is incorrect as the drug primarily affects the cell membrane rather than the cell wall. Choice D is also incorrect as amphotericin B does not inhibit glucan synthetase.

2. A 30-year-old man has a history of heart transplant and is receiving long-term steroids to prevent rejection. The patient is due for routine vaccines. Attenuated vaccines are contraindicated in this patient because the antigen is:

• A. live and can cause infection.
• B. mutated and infectious.
• C. inactive but still infectious
• D. pathogenic

Correct answer: A

Rationale: The correct answer is A: live and can cause infection. Patients who are immunocompromised, like those receiving long-term steroids after an organ transplant, should not receive live vaccines because the live attenuated organisms in these vaccines can cause infections in individuals with weakened immune systems. Choice B is incorrect because attenuated vaccines are live but weakened, not mutated. Choice C is incorrect because while inactive, attenuated vaccines are not infectious. Choice D is incorrect because attenuated vaccines are not pathogenic; they are attenuated (weakened) forms of the pathogen.

3. A patient is prescribed sildenafil (Viagra) for erectile dysfunction. What key contraindication should the nurse review with the patient?

• A. Use of nitrates
• B. History of hypertension
• C. Use of antihypertensive medications
• D. Use of antihypertensive medications

Correct answer: A

Rationale: The correct answer is A: Use of nitrates. Sildenafil (Viagra) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates and sildenafil both cause vasodilation, so their combined use can lead to a dangerous drop in blood pressure. Choices B, C, and D are incorrect because while a history of hypertension or use of antihypertensive medications may influence treatment decisions, they are not the key contraindication specifically related to sildenafil use.

4. A nurse caring for a patient with a diagnosis of lung cancer is aware that the primary risk factor for developing lung cancer is:

• A. Alcohol consumption
• B. Smoking
• C. Poor diet
• D. Environmental exposure

Correct answer: B

Rationale: The correct answer is B: Smoking. Smoking is the primary risk factor for developing lung cancer. Tobacco smoke contains numerous carcinogens that can damage the cells in the lungs, leading to the development of cancer. Alcohol consumption (Choice A), poor diet (Choice C), and environmental exposure (Choice D) can contribute to overall health risks, but they are not the primary risk factors specifically associated with the development of lung cancer.

5. A group of nursing students at Nurseslabs University is currently learning about family violence. Which of the following is true about the topic mentioned?

• A. Family violence affects every socioeconomic level.
• B. Family violence is caused by drugs and alcohol abuse.
• C. Family violence predominantly occurs in lower socioeconomic levels.
• D. Family violence rarely occurs during pregnancy.

Correct answer: A

Rationale: The correct answer is A: Family violence affects individuals across all socioeconomic levels. Family violence is not limited to any specific socioeconomic level; it can happen in any family, regardless of their economic status. Choice B is incorrect because while substance abuse can contribute to family violence, it is not the sole cause. Choice C is incorrect as family violence can occur in families from all socioeconomic backgrounds. Choice D is incorrect as family violence can indeed occur during pregnancy, posing serious risks to both the mother and the unborn child.

Similar Questions