Nursing Elites

1. The principal cation in plasma and interstitial fluid is:

• A. Sodium
• B. Potassium
• C. Calcium
• D. Magnesium

Correct answer: A

Rationale: The principal cation in plasma and interstitial fluid is sodium. Sodium plays a crucial role in maintaining fluid balance and is the primary cation in extracellular fluids like plasma and interstitial fluid. Potassium is the primary cation within cells, not in extracellular fluids, making it an incorrect choice. Calcium and magnesium are essential minerals but are not the principal cations in plasma and interstitial fluid, so they are also incorrect choices.

2. In which of the following conditions does a person need to sit, stand, or use multiple pillows when lying down?

• A. Orthopnea
• B. Dyspnea
• C. Eupnea
• D. Apnea

Correct answer: A

Rationale: The correct answer is Orthopnea. Orthopnea is a medical condition in which a person has difficulty breathing while lying down. To alleviate this difficulty, the person may need to sit, stand, or use multiple pillows. On the other hand, Dyspnea refers to general shortness of breath which is not specifically related to the position of the body. Eupnea is the term for normal, unlabored breathing, and Apnea is a condition characterized by the cessation of breathing. Thus, none of these other choices directly relate to the need to adjust body position or use aids like multiple pillows to breathe comfortably when lying down.

3. A healthcare provider is teaching a client about nutritional requirements necessary to promote wound healing. Which of the following nutrients should the provider include in the teaching?

• A. Protein
• B. Calcium
• C. Vitamin B1
• D. Vitamin D

Correct answer: A

Rationale: Protein is crucial for wound healing as it plays a vital role in tissue repair and synthesis. Calcium is important for bone health but not directly related to wound healing. Vitamin B1 is essential for energy production but not specifically significant for wound healing. Vitamin D is essential for bone health and immune function but is not a primary nutrient emphasized for wound healing.

4. In an extreme situation and when no other resident or intern is available, should a nurse receive telephone orders, the order has to be correctly written and signed by the physician within:

• A. 24 hours
• B. 36 hours
• C. 48 hours
• D. 12 hours

Correct answer: B

Rationale: In an extreme situation where no other resident or intern is available, if a nurse receives telephone orders, the order has to be correctly written and signed by the physician within 36 hours. This time frame ensures timely documentation and validation of the orders. Choice A (24 hours) is too short a period for busy physicians to fulfill the task. Choice C (48 hours) is too long and delays the incorporation of physician orders into the patient's care plan. Choice D (12 hours) may not provide enough time for the physician to review and sign the order, especially in situations where immediate attention is not required.

5. Which monosaccharide is the most sweet?

• A. Glucose
• B. Dextrose
• C. Fructose
• D. Sucrose

Correct answer: C

Rationale: Fructose is the sweetest of the monosaccharides. Note that glucose and dextrose are the same, and sucrose is a disaccharide, not a monosaccharide.

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