Nursing Elites

1. Each statement is true of calcium within saliva, except one. Which is the exception?

• A. Saliva is supersaturated with calcium.
• B. Saliva is a source of calcium to mineralize an immature or demineralized enamel surface.
• C. Calcium and phosphate in saliva provide a buffering action.
• D. Calcium within saliva increases dental caries.

Correct answer: D

Rationale: The correct answer is D. Calcium within saliva does not increase dental caries; in fact, the buffering action provided by calcium and phosphate in saliva inhibits caries formation by preventing the dissolution of enamel by plaque biofilm. Choice A is correct as saliva is indeed supersaturated with calcium. Choice B is correct as saliva serves as a source of calcium to mineralize an immature or demineralized enamel surface. Choice C is correct as calcium and phosphate in saliva do provide a buffering action to protect teeth from acids.

2. Folate is crucial for DNA synthesis and cell division, making it particularly important during periods of rapid growth, such as pregnancy.

• A. TRUE
• B. FALSE
• C.
• D.

Correct answer: A

Rationale: The correct answer is A. Folate plays a crucial role in DNA synthesis and cell division, which are essential processes for cell multiplication. This makes folate particularly important during periods of rapid growth, such as pregnancy. Therefore, the statement is true. Choice B is incorrect because it fails to acknowledge the significance of folate in cell multiplication and rapid growth, especially during pregnancy.

3. A client with Crohn's disease is receiving parenteral nutrition. Which of the following interventions should the nurse not include in the care of this client?

• A. Remove the parenteral nutrition solution from the refrigerator 2 hours before infusion.
• B. Remove unused parenteral nutrition after 12 hours of use.
• C. Monitor daily laboratory values and report abnormalities as needed.
• D. Monitor the flow rate of the parenteral nutrition carefully and adjust it if necessary.

Correct answer: B

Rationale: In caring for a client receiving parenteral nutrition, it is important to follow proper guidelines to ensure safety and effectiveness. Unused parenteral nutrition should be removed after 24 hours, not 12 hours, to prevent contamination and reduce the risk of infection. Option A is correct as it ensures the solution is at room temperature before infusion. Option C is essential for monitoring the client's response to parenteral nutrition. Option D is important to maintain the correct flow rate and adjust it as needed. Therefore, option B is the incorrect choice among the options provided.

4. Does taste perception decline with age, and are individuals taking three or more medications likely to have less taste sensitivity, requiring greater amounts of sodium and sugar to perceive these tastes?

• 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: A

Rationale: Both statements are indeed true. As people age, their taste perception tends to decline. This change can be further exacerbated by the use of multiple medications, which can potentially dull taste sensitivity even more. Consequently, these individuals often need to consume foods with higher levels of sodium and sugar in order to perceive these tastes. Choices B, C, and D are incorrect because they deny either one or both of these established facts.

5. What is the term for intestinal wounds associated with Crohn's disease that develop in different areas in the intestine, with normal tissue separating affected regions?

• A. Skip lesions
• B. Fistulas
• C. Fissures
• D. Loop ulcerations

Correct answer: A

Rationale: Skip lesions are typical characteristics of Crohn's disease, where patches of diseased intestine are interspersed with areas of healthy tissue. This is why option A is the correct answer. Option B, fistulas, are abnormal connections between two body parts, which is not what the question is describing. Option C, fissures, are small tears in the lining of the anus, which also do not fit the description in the question. Option D, loop ulcerations, is not a recognized medical term, making it an incorrect choice.

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