Nursing Elites

1. Each of the following is a function of vitamin A, except one. Which is the exception?

• A. Prevention of night blindness
• B. Growth of soft tissues and bone
• C. Maintenance of more than 200 genes
• D. Integrity of body openings and their linings

Correct answer: C

Rationale: The correct answer is C. Maintenance of more than 200 genes is not a function of vitamin A; instead, it is a function of Vitamin D. Vitamin A plays a crucial role in the prevention of night blindness by aiding in the production of the visual pigment rhodopsin. It also supports the growth of soft tissues and bone, as well as the integrity of body openings and their linings. Choice C is incorrect because the maintenance of genes is primarily associated with Vitamin D, not Vitamin A.

2. Which of the following terms describes the amount of blood ejected per heartbeat?

• A. Stroke volume
• B. Cardiac output
• C. Ejection fraction
• D. Afterload

Correct answer: A

Rationale: The correct answer is A: Stroke volume. Stroke volume refers to the amount of blood ejected by the left ventricle in one contraction. Choice B, Cardiac output, is the total volume of blood pumped by the heart per minute and is calculated by multiplying stroke volume by heart rate. Choice C, Ejection fraction, is the percentage of blood pumped out of the left ventricle with each heartbeat. Choice D, Afterload, refers to the pressure or resistance that the ventricles must overcome to eject blood during systole. Therefore, in the context of the question, the term that specifically describes the amount of blood ejected per heartbeat is stroke volume.

3. Mr. CKK is unconscious and was brought to the E.R. Who among the following can give consent for CKK's operation?

• A. Doctor
• B. Nurse
• C. Next of Kin
• D. The Patient

Correct answer: A

Rationale: In the scenario described, when a patient is unconscious and unable to provide consent, the responsibility usually falls on the physician to make decisions regarding the patient's treatment, including obtaining consent for an operation. While nurses play a crucial role in patient care, they typically do not have the authority to provide consent for a major procedure. The next of kin may be consulted for input, but the ultimate decision-making authority lies with the physician. The patient, being unconscious, is unable to provide consent in this situation.

4. Which food should the nurse recommend for a client deficient in vitamin A?

• A. Orange slices
• B. Steamed carrots
• C. Apple sauce
• D. Baked potato

Correct answer: B

Rationale: The correct answer is B, steamed carrots, as they are high in vitamin A. Carrots are rich in beta-carotene, a precursor to vitamin A, which is essential for good vision, a healthy immune system, and cell growth. Oranges (choice A) are a good source of vitamin C but not vitamin A. Apple sauce (choice C) and baked potato (choice D) do not provide significant amounts of vitamin A compared to steamed carrots, making them less suitable recommendations for a client deficient in this specific nutrient.

5. A client with frequent kidney stones is receiving dietary teaching from a nurse. Which of the following instructions should the nurse include?

• A. Limit your intake of dairy products.
• B. Increase your consumption of protein-rich foods.
• C. Avoid eating tree nuts, such as almonds.
• D. Take a vitamin C supplement twice daily.

Correct answer: A

Rationale: The correct answer is to instruct the client to limit their intake of dairy products. Dairy products are high in calcium and can contribute to kidney stone formation in susceptible individuals. Increasing protein intake may lead to higher excretion of calcium, which can exacerbate kidney stone formation. While tree nuts are high in oxalates, which can contribute to kidney stone formation, it is not the primary concern in this case. Vitamin C supplements can increase oxalate levels in the urine, potentially increasing the risk of kidney stone formation, so it should not be recommended.

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