Nursing Elites

1. Which of the following best describes the role of insulin in the body?

• A. Insulin helps break down glucose into energy for the body
• B. Insulin facilitates the movement of glucose into cells
• C. Insulin converts excess glucose into fat for storage
• D. Insulin increases the breakdown of protein into amino acids

Correct answer: B

Rationale: The correct answer is B: Insulin facilitates the movement of glucose into cells. Insulin is a hormone that helps regulate blood sugar levels by promoting the uptake of glucose from the bloodstream into cells, where it can be used for energy production. Choice A is incorrect because insulin doesn't break down glucose but rather helps cells take up glucose. Choice C is incorrect as insulin does not directly convert glucose into fat; excess glucose is stored as fat by other processes. Choice D is incorrect as insulin does not increase the breakdown of protein into amino acids; its primary role is in glucose metabolism.

2. A client is complaining of a tingling sensation in the fingers, nose tip, and earlobes 24 hours after a total thyroidectomy. Which measure should the PN implement first?

• A. Apply sequential compression devices bilaterally
• B. Initiate prescribed L-thyroxine replacement therapy
• C. Obtain prescribed calcium gluconate for tetany
• D. Prepare for emergency tracheotomy at the bedside

Correct answer: C

Rationale: The correct answer is C: Obtain prescribed calcium gluconate for tetany. Tingling sensations post-thyroidectomy may indicate hypocalcemia, a potential complication that requires prompt treatment with calcium gluconate to prevent tetany. Initiating L-thyroxine replacement therapy (choice B) is important but not the first priority in this situation. Applying sequential compression devices (choice A) is not indicated for tingling sensations and does not address the potential complication of hypocalcemia. Preparing for an emergency tracheotomy (choice D) is not warranted based on the client's symptoms of tingling sensations.

3. What is the primary role of the sinoatrial (SA) node in the heart?

• A. Pacemaker of the heart
• B. Blood pressure regulation
• C. Electrical conduction delay
• D. Stimulating muscle contraction

Correct answer: A

Rationale: The correct answer is A: Pacemaker of the heart. The SA node, known as the natural pacemaker, initiates the electrical impulses that set the rhythm for the heartbeat. It is responsible for coordinating the heart's contractions by generating electrical signals at regular intervals. Choice B is incorrect as the SA node's primary function is not related to blood pressure regulation. Choice C is incorrect as the SA node does not cause electrical conduction delay but rather initiates and conducts the electrical impulses. Choice D is incorrect as the SA node does not directly stimulate muscle contraction but rather initiates the electrical events that lead to muscle contraction.

4. Which of the following factors increases the risk of developing a pressure ulcer?

• A. High-protein diet
• B. Frequent repositioning
• C. Immobility
• D. Active range of motion exercises

Correct answer: C

Rationale: Immobility is a significant risk factor for pressure ulcers because it leads to prolonged pressure on specific areas of the body, reducing blood flow and leading to tissue breakdown. Choices A, B, and D are incorrect. A high-protein diet can actually aid in wound healing and tissue repair. Frequent repositioning helps relieve pressure on bony prominences, reducing the risk of pressure ulcers. Active range of motion exercises can improve circulation and prevent muscle atrophy, thereby reducing the risk of pressure ulcers.

5. The PN observes a UAP preparing to exit a client's room. The UAP's hands appear visibly soiled as the UAP uses a hand rub for 19 seconds to cleanse the hands. Which action should the PN take?

• A. Confirm that the UAP completed hand hygiene correctly
• B. Instruct the UAP to wash the hands for one minute
• C. Ask the UAP why the hands were so obviously soiled
• D. Advise the UAP to use the hand rub for 30 seconds

Correct answer: D

Rationale: When hands are visibly soiled, they should be washed with soap and water for at least 20 seconds. However, when using hand rub, it should be applied for at least 30 seconds to be effective. In this scenario, the UAP's hands were visibly soiled, indicating the need for thorough cleaning. Advising the UAP to use the hand rub for 30 seconds is essential to ensure proper hand hygiene and reduce the risk of spreading infection. Choices A, B, and C are incorrect because confirming completion of hand hygiene, instructing to wash for one minute, or asking why the hands were soiled do not address the immediate need for proper hand hygiene in the given situation.

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