Nursing Elites

1. Where in the body are microvilli located, facilitating the absorption of most nutrients?

• A. Stomach
• B. Pancreas
• C. Large Intestine
• D. Small Intestine

Correct answer: D

Rationale: The correct answer is D: Small Intestine. Microvilli are present in the small intestine, significantly increasing its surface area for efficient absorption of nutrients. The small intestine is the primary site for nutrient absorption in the body. The stomach (choice A) primarily functions to break down food with its acidic environment but is not where most nutrients are absorbed. The pancreas (choice B) produces enzymes to aid in digestion but does not directly absorb nutrients. The large intestine (choice C) mainly absorbs water and electrolytes from undigested food, rather than nutrients.

2. Studies suggest that leukoplakia is resolved by excess vitamin A (a fat-soluble vitamin), retinoids, and beta-carotene. Leukoplakia is a white plaque that forms on oral mucous membranes.

• A. Both statements are true.
• B. Both statements are false.
• C. The first statement is true; the second is false.
• D. The first statement is false; the second is true.

Correct answer: B

Rationale: Both statements are false. Studies suggest that leukoplakia, a white plaque that forms on oral mucous membranes, can be resolved by vitamin A, retinoids, and beta-carotene. Despite the potential to resolve leukoplakia, relapse is common. Also pertinent, evidence does not indicate that any of these nutrients prevent malignant transformation. The extract provided clarifies that leukoplakia is a white plaque, not an erythematous lesion, and that vitamin A, retinoids, and beta-carotene can help resolve it.

3. Which of the following is a normal change observed in an elderly individual?

• A. Enhanced sense of taste
• B. Increased appetite
• C. Frequent urination
• D. Lens thinning

Correct answer: C

Rationale: The correct answer is C, frequent urination. As people age, they may experience physiological changes that can lead to an increased frequency of urination. This is due to a decrease in bladder capacity and increased bladder irritability, which are normal age-related changes. On the contrary, the sense of taste (Choice A) and appetite (Choice B) often decrease with age, not increase. As for Choice D, the lens of the eye actually thickens with age, not thins, leading to conditions like presbyopia. Therefore, Choices A, B, and D are incorrect.

4. A client who is postoperative following a liver transplant and weighs 65 kg. Which of the following actions should the nurse plan to take?

• A. Keep the client NPO for the first week postoperative.
• B. Limit caloric content once the client resumes eating.
• C. Stress the importance of safe food-handling practices.
• D. Decrease foods high in carbohydrates once the client resumes eating.

Correct answer: C

Rationale: After a liver transplant, it is crucial to stress the importance of safe food-handling practices to prevent foodborne illnesses, especially due to the client's altered immune system. Keeping the client NPO for the first week postoperative is not recommended as early nutrition support is essential for recovery. Limiting caloric content once the client resumes eating may not be appropriate as they need adequate nutrition for healing. Decreasing foods high in carbohydrates without a specific indication may lead to inadequate nutrient intake, which is not ideal for the client's recovery.

5. A client who 1) _____ diet requires 2) ___ amounts of vitamin C.

• A. A) Follows a vegan diet, B) More
• B. B) Smokes cigarettes, B) More
• C. A) Follows a vegan diet, C) The same
• D. B) Smokes cigarettes, C) The same

Correct answer: B

Rationale: The correct answer is B) Smokes cigarettes, More. Smoking increases the need for vitamin C as it can deplete the body's vitamin C levels. Vegan diets, on the other hand, require more vitamin C for optimal absorption due to the absence of heme iron, which enhances non-heme iron absorption. Choices A and C are incorrect because vegan diets require more vitamin C, while smoking increases the need for vitamin C.

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