Nursing Elites

1. A nurse is discussing sources of vitamin K with a client. Which food should the nurse recommend?

• A. Fish
• B. Leafy greens
• C. Citrus fruits
• D. Nuts

Correct answer: B

Rationale: Leafy greens are rich in vitamin K, which is important for blood clotting.

2. What does a QRS Complex represent in an ECG reading?

• A. Atrial depolarization
• B. Ventricular repolarization
• C. Ventricular depolarization
• D. End of ventricular depolarization

Correct answer: C

Rationale: The QRS Complex in an ECG reading represents ventricular depolarization, which is the process of the heart's ventricles preparing to contract by changing the electrical charge in the cell, hence choice 'C' is the correct answer. Choice 'A' is incorrect because atrial depolarization is represented by the P wave in an ECG reading, not the QRS Complex. Choice 'B' is incorrect as ventricular repolarization is depicted by the T wave, not the QRS Complex. Finally, choice 'D' is also incorrect because the QRS Complex is not the end of ventricular depolarization, but the process itself.

3. Which food would benefit an anemic patient by increasing their intake?

• A. Beef
• B. Apples
• C. White bread
• D. Fish

Correct answer: A

Rationale: An anemic patient would benefit from increasing their intake of beef. Beef is an excellent source of heme iron, which is critical for treating anemia. Heme iron is absorbed more readily by the body compared to non-heme iron found in plant-based foods. Apples and white bread, while healthy, do not contain significant amounts of heme iron. Fish, although it does contain iron, it's non-heme iron, which is not as efficiently absorbed by the body as heme iron, hence less effective in treating anemia.

4. Milk and other dairy products are preferred sources of calcium because lactose enhances calcium absorption.

• A. Both the statement and the reason are correct and related.
• B. Both the statement and the reason are correct but are not related.
• C. The statement is correct, but the reason is not correct.
• D. The statement is not correct, but the reason is correct.

Correct answer: A

Rationale: Both the statement and the reason are correct and related. Milk and other dairy products are indeed preferred sources of calcium because they supply most of the available calcium. Additionally, lactose present in dairy products enhances calcium absorption, making them even more efficient sources of this essential mineral. The statement correctly identifies dairy products as preferred sources of calcium, and the reason explains how lactose contributes to better calcium absorption. The other choices are incorrect as they do not accurately assess the relationship between lactose, calcium absorption, and the preference for dairy products as sources of calcium.

5. What differentiates one amino acid from another?

• A. The amine group
• B. The acid group
• C. The side chain
• D. None of the above

Correct answer: C

Rationale: The side chain, also known as the R group, is what differentiates one amino acid from another. It imparts unique properties to each amino acid, thereby influencing their roles and functions in proteins. The amine group (Choice A) and the acid group (Choice B) are components of all amino acids and do not cause the differences among various amino acids. Choice D is incorrect as it suggests that none of the given options account for the differences, which is not true as the side chain does.

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