Nursing Elites

1. Which physiologic mechanism best describes the function of the sodium-potassium pump?

• A. active transport
• B. diffusion
• C. filtration
• D. osmosis

Correct answer: A

Rationale: Active transport is the correct answer as it accurately describes the process involved in the sodium-potassium pump. The pump utilizes energy to move ions against their concentration gradient, maintaining cellular concentrations. Diffusion (choice B) is a passive process where substances move from an area of higher concentration to lower concentration. Filtration (choice C) involves the movement of solutes based on pressure gradients. Osmosis (choice D) is the movement of water across a semipermeable membrane.

2. A nurse is caring for a client with an elevated urine osmolarity. The nurse should assess the client for:

• A. fluid volume excess.
• B. hyperkalemia.
• C. hypercalcemia.
• D. fluid volume deficit.

Correct answer: D

Rationale: Elevated urine osmolarity indicates that the urine is concentrated, suggesting the body is trying to conserve water. This commonly occurs in conditions like dehydration or fluid volume deficit. Assessing the client for fluid volume excess, hyperkalemia, or hypercalcemia would not be the priority in this situation. Therefore, the correct answer is to assess the client for fluid volume deficit. Fluid volume excess is characterized by decreased urine osmolarity, while hyperkalemia and hypercalcemia are related to electrolyte imbalances and would not directly cause elevated urine osmolarity.

3. A nurse is assessing an 18-year-old female who has recently suffered a TBI. The nurse notes a slower pulse and impaired respiration. The nurse should report these findings immediately to the physician due to the possibility the patient is experiencing which of the following conditions?

• A. Increased intracranial pressure
• B. Increased function of cranial nerve X
• C. Sympathetic response to activity
• D. Meningitis

Correct answer: A

Rationale: The nurse should report the slower pulse and impaired respiration to the physician immediately as they are indicative of increased intracranial pressure (ICP) following a traumatic brain injury (TBI). These signs suggest that there may be a rise in pressure within the skull, which can be a life-threatening condition requiring urgent intervention. Options B and C are unlikely in this scenario as they do not correlate with the symptoms presented. Meningitis (Option D) typically presents with different signs and symptoms, such as fever, headache, and neck stiffness, which are not described in the patient's case.

4. A patient has been admitted to the hospital with an L4-5 HNP diagnosis. After 24 hours, the patient is able to ambulate with assistance and has reduced muscle spasms. Which of the following medications was the most beneficial in changing the patient's mobility status?

• A. Mivacron
• B. Atropine
• C. Bethanechol
• D. Flexeril

Correct answer: D

Rationale: The correct answer is Flexeril. Flexeril is a muscle relaxant commonly used to treat acute muscle pain and spasms. In this scenario, the patient experiencing reduced muscle spasms and improved mobility after taking Flexeril indicates its effectiveness. Choice A, Mivacron, is a neuromuscular blocking agent that is not typically used for muscle spasms or pain relief. Choice B, Atropine, is a medication used to treat certain types of nerve agent and pesticide poisonings, not muscle spasms. Choice C, Bethanechol, is a medication that stimulates bladder contractions and is not indicated for muscle spasms or mobility improvement.

5. When planning care for a client taking Heparin, which nursing diagnosis should the nurse address first?

• A. Ineffective tissue perfusion related to the presence of a thrombus obstructing blood flow
• B. Risk for injury related to active loss of blood from the vascular space
• C. Deficient knowledge related to the client's lack of understanding of the disease process
• D. Impaired skin integrity related to the development of bruises and/or hematoma

Correct answer: B

Rationale: The correct answer is 'Risk for injury related to active loss of blood from the vascular space.' When a client is taking Heparin, the primary concern is the risk of bleeding due to its anticoagulant properties. Monitoring for signs of active blood loss is crucial to prevent complications like hemorrhage. While ineffective tissue perfusion, deficient knowledge, and impaired skin integrity are important, they are secondary to the immediate risk of bleeding in clients taking anticoagulants like Heparin.

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