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 providing teaching to the parent of a toddler about appropriate snacks. Which of the following foods should the nurse include?

• A. Sliced bananas
• B. Raw celery
• C. Peanut butter
• D. Grapes

Correct answer: A

Rationale: The correct answer is sliced bananas. Bananas are a good choice for toddlers as they are easy to chew, rich in potassium, and generally well-tolerated. Raw celery (Choice B) may pose a choking hazard due to its fibrous nature. Peanut butter (Choice C) should be avoided as it can also be a choking hazard and may cause an allergic reaction in some children. Grapes (Choice D) are a choking hazard for toddlers due to their size and shape, so they should be cut into smaller pieces or avoided altogether.

3. Which condition is an example of a potential cause of gastritis?

• A. bile reflux
• B. low salt intake
• C. hypophosphatasia
• D. gallstones

Correct answer: A

Rationale: Bile reflux is a potential cause of gastritis as it can irritate the stomach lining when bile backs up into the stomach. Choices B, C, and D do not directly cause gastritis. Low salt intake is not a common cause of gastritis. Hypophosphatasia is a rare genetic disorder affecting bone development, not the stomach. Gallstones, while related to the gallbladder, are not a direct cause of gastritis.

4. Vitamin deficiencies, especially the B-complex vitamins, seldom occur in isolation. Folate, a B-complex vitamin, is the exception because it functions separately from other vitamins.

• 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: C

Rationale: The first statement is true; the second is false. If a deficiency of one vitamin is suspected, symptoms of other vitamin B deficiencies also may be present. Folate deficiencies usually occur with other nutrient deficiencies. Specifically, folate functions in conjunction with vitamins B12 and C in maintaining normal levels of mature red blood cells.

5. During the first 24 hours after the thermal injury, you should assess Sergio for:

• A. hypokalemia and hypernatremia
• B. hypokalemia and hyponatremia
• C. hyperkalemia and hyponatremia
• D. hyperkalemia and hypernatremia

Correct answer: D

Rationale: During the initial phase after a thermal injury, the major concern is the release of potassium due to cell damage, leading to hyperkalemia. Hypernatremia is not typically a primary concern in the immediate post-injury phase. Hyponatremia is less likely to occur initially after a burn injury. Therefore, the correct assessment for Sergio during the first 24 hours after the thermal injury would be hyperkalemia and hypernatremia.

Similar Questions