Nursing Elites

1. Which mineral is a principal component of cell membranes?

• A. phosphorus
• B. magnesium
• C. iron
• D. iodine

Correct answer: A

Rationale: Phosphorus is the correct answer. It is a key component of cell membranes, being part of the phospholipid bilayer that provides structure and controls the movement of substances in and out of cells. Magnesium, iron, and iodine do not serve as principal components of cell membranes. Magnesium is involved in various enzymatic reactions, iron is essential for oxygen transport, and iodine plays a role in thyroid hormone synthesis.

2. A nurse is caring for a client following an appendectomy. The nurse verifies the postoperative prescription which reads, 'Discontinue NPO status; advance diet as tolerated.' Which of the following are appropriate for the nurse to offer the client? (SATA)

• A. Wheat toast
• B. Applesauce
• C. Applesauce, Chicken broth
• D. Chicken broth

Correct answer: C

Rationale: The correct answer is C: Applesauce and chicken broth. After an appendectomy, patients are typically started on a clear liquid diet before advancing to more solid foods. Applesauce and chicken broth are part of a low-residue diet that is easily digestible and gentle on the digestive system, making them suitable choices for a client following surgery. Wheat toast may be too heavy and fibrous initially, while other solid foods should be introduced gradually to prevent gastrointestinal upset.

3. How is the stomach protected from damage by gastric acid?

• A. enzymes present in the stomach
• B. a protective bacteria in the stomach
• C. bicarbonate present in the stomach
• D. the mucus lining of the stomach

Correct answer: D

Rationale: The correct answer is D. The stomach is protected from gastric acid by a thick mucus lining that acts as a physical barrier, preventing the acid from eroding the stomach walls. Enzymes in the stomach help with digestion but do not play a significant role in protecting the stomach from acid damage, so choice A is incorrect. While some bacteria in the stomach can be beneficial, they do not primarily protect the stomach from gastric acid, making choice B incorrect. Bicarbonate, a base, can neutralize acid, but it is not the primary defense mechanism against gastric acid in the stomach, so choice C is also incorrect.

4. A nurse is providing dietary teaching for a client who has a burn injury and adheres to a vegan diet. The nurse should recommend which of the following foods as the best source of protein to promote wound healing?

• A. One cup of brown rice
• B. One cup of orange juice
• C. One cup of pureed avocado
• D. One cup of lentils

Correct answer: D

Rationale: Lentils are an excellent source of plant-based protein, essential for wound healing in a vegan diet. Brown rice, orange juice, and pureed avocado are not protein-rich foods like lentils and would not provide sufficient protein for wound healing in this scenario.

5. What type of drug is lamivudine, used for the management of HIV infection?

• A. CCR5 antagonist
• B. fusion inhibitor
• C. nucleoside reverse transcriptase inhibitor
• D. protease inhibitor

Correct answer: C

Rationale: Lamivudine belongs to the class of nucleoside reverse transcriptase inhibitors (NRTIs), making choice C the correct answer. NRTIs like lamivudine work by inhibiting the reverse transcriptase enzyme, an essential component for the HIV virus to replicate. Choices A, B, and D are incorrect because lamivudine does not function as a CCR5 antagonist, fusion inhibitor, or protease inhibitor in the management of HIV infection.

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