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. A client who is postpartum and has been diagnosed with iron deficiency anemia should be taught to consume which of the following dietary recommendations?

• A. Yogurt and mozzarella
• B. Spinach and beef
• C. Milk and turkey slices
• D. Fish and cottage cheese

Correct answer: C

Rationale: The correct answer is spinach and beef. Both spinach and beef are high in iron, making them excellent choices to help combat iron deficiency anemia. Yogurt, mozzarella, milk, turkey slices, fish, and cottage cheese are not as rich in iron compared to spinach and beef, so they are not the most suitable dietary recommendations for a client with iron deficiency anemia.

3. Can bacterial plaque metabolize sucrose, lactose, and fructose? Is fructose, also known as levulose and found naturally in honey, less cariogenic than sucrose and lactose?

• A. Yes, bacterial plaque can metabolize these sugars, but no, fructose is not less cariogenic.
• B. No, bacterial plaque cannot metabolize these sugars, and fructose is not less cariogenic.
• C. Yes, bacterial plaque can metabolize these sugars, but no, fructose is not less cariogenic.
• D. No, bacterial plaque cannot metabolize these sugars, but yes, fructose is less cariogenic.

Correct answer: A

Rationale: The first statement is correct as bacterial plaque can indeed metabolize sucrose, lactose, and fructose. However, the second statement is inaccurate. Fructose, despite being found naturally in honey and known also as levulose, is not less cariogenic than either sucrose or lactose. This means that its consumption does not result in fewer cavities or tooth decay. Therefore, the correct answer is that bacterial plaque can metabolize these sugars, but fructose is not less cariogenic. Choices B, C, and D are incorrect because they either wrongly assert that bacterial plaque cannot metabolize these sugars or wrongly claim that fructose is less cariogenic.

4. Which dietary approach is most beneficial for managing hypertension?

• A. Increasing caffeine intake
• B. Reducing sodium intake
• C. Increasing dietary cholesterol
• D. Reducing fiber intake

Correct answer: B

Rationale: Reducing sodium intake is the most beneficial dietary approach for managing hypertension. High sodium intake can lead to increased blood pressure, so lowering sodium intake is crucial in managing hypertension. Choices A, C, and D are incorrect because increasing caffeine intake, dietary cholesterol, or reducing fiber intake are not recommended dietary approaches for managing hypertension and may even have adverse effects on blood pressure levels.

5. Which of the following is a tricyclic antidepressant drug?

• A. Venlafaxine (Effexor)
• B. Fluoxetine (Prozac)
• C. Sertraline (Zoloft)
• D. Imipramine (Tofranil)

Correct answer: D

Rationale: Imipramine (Tofranil) is a tricyclic antidepressant drug. This class of medications is used to treat depression, and they work by increasing the levels of certain chemicals in the brain that help lift mood. On the other hand, Venlafaxine (Effexor) is a serotonin and norepinephrine reuptake inhibitor (SNRI), Fluoxetine (Prozac) is a selective serotonin reuptake inhibitor (SSRI), and Sertraline (Zoloft) is also an SSRI. Therefore, they are not classified as tricyclic antidepressants.

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