Nursing Elites

1. What physiologic role does magnesium play in the body?

• A. Blood clotting, transmission of nerve impulses, muscle contraction and relaxation
• B. Calcium homeostasis, structural integrity of heart muscle
• C. No known metabolic function, caries-preventing properties
• D. ATP energy release; metabolism of fats, carbohydrates, proteins; regulates acid-base balance

Correct answer: B

Rationale: The correct answer is B. Magnesium plays an important role in maintaining calcium homeostasis and preventing skeletal abnormalities. It is involved in more than 300 enzymatic reactions, including energy metabolism, insulin activity, and glucose use. Magnesium is vital to the structural integrity of heart muscle and other muscles and nerves. While magnesium does play a role in blood clotting, nerve impulses, muscle contraction, relaxation, ATP energy release, and metabolism of fats, carbohydrates, proteins, the primary physiologic role of magnesium in the body is related to calcium homeostasis and maintaining the structural integrity of the heart muscle. Choice A is incorrect because it includes functions of magnesium, but they are not its primary physiologic role. Choice C is incorrect as magnesium has several known metabolic functions. Choice D is incorrect because although magnesium is involved in ATP energy release and metabolism, its primary role is related to calcium homeostasis and structural integrity of muscle.

2. The purpose of chest percussion and vibration is to loosen secretions in the lungs. The difference between the procedures is:

• A. Percussion uses only one hand, while vibration uses both hands
• B. Percussion delivers cushioned blows to the chest with cupped palms, while vibration gently shakes secretions loose
• C. In both percussion and vibration, the hands are not on top of each other, and hand action is not in tune with the client's breath
• D. Percussion slaps the chest to loosen secretions, while vibration shakes the secretions along with the inhalation

Correct answer: D

Rationale: Chest percussion involves the use of rhythmic tapping to dislodge mucus from the lungs, facilitating its movement toward the larger airways where it can be expelled. This technique is particularly important in conditions where mucus retention is a significant risk factor for infection. The key difference between chest percussion and vibration is that percussion involves slapping the chest to loosen secretions, while vibration involves shaking the secretions along with the inhalation, aiding in moving the loosened secretions upwards for easier removal. Choices A, B, and C do not accurately describe the main difference between chest percussion and vibration, making them incorrect.

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. For an incontinent elderly client who frequently wets his bed and develops redness and skin excoriation at the perianal area, what is the best nursing goal?

• A. Ensure that the bed linen is always dry
• B. Frequently check the bed for wetness and keep it dry
• C. Place a rubber sheet under the client's buttocks
• D. Keep the patient clean and dry

Correct answer: A

Rationale: The best nursing goal for an incontinent elderly client with skin excoriation is to ensure that the bed linen is always dry. This helps in preventing further skin breakdown and promoting skin integrity. Choice B, to frequently check the bed for wetness and keep it dry, may not address the issue of prevention if the linen is not consistently dry. Choice C, placing a rubber sheet under the client's buttocks, focuses more on protecting the mattress rather than addressing the client's skin condition directly. Choice D, keeping the patient clean and dry, is important but does not specifically address the preventive aspect of maintaining dry bed linen.

5. Nurse Minette needs to schedule a first home visit to OB client Leah. When is a first home-care visit typically made?

• A. Within 4 days after discharge
• B. Within 24 hours after discharge
• C. Within 1 hour after discharge
• D. Within 1 week of discharge

Correct answer: C

Rationale: Effective nursing care involves comprehensive assessments that address all aspects of a patient's condition, ensuring that interventions are appropriately targeted and outcomes are optimized.

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