which of the following lab values is elevated first after a client has a myocardial infarction
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Nursing Elites

NCLEX-PN

Nclex Questions Management of Care

1. Which of the following lab values is elevated first after a client has a myocardial infarction?

Correct answer: B

Rationale: The correct answer is troponin. Troponin levels are the most specific and sensitive markers for myocardial infarction, and they begin to rise within a few hours after the event. CPK, SGOT, and LDH are also enzymes that can indicate myocardial damage, but troponin is the earliest and most specific indicator. CPK typically rises 4-8 hours after an infarction, followed by SGOT (AST) at 8-12 hours, and LDH at 12-24 hours post-infarction.

2. A young boy is recently diagnosed with a seizure disorder. Which of the following statements by the boy's mother indicates a need for further teaching by the nurse?

Correct answer: C

Rationale: The correct answer is "I should lay him on his back during a seizure."? This statement indicates a need for further teaching because a client having a seizure should be turned to the side to prevent aspiration of secretions. Choices A, B, and D are correct. Getting plenty of rest helps in managing seizures, having a medical alert bracelet informs others about the condition in case of emergency, and loosening clothing during a seizure ensures better air circulation and prevents injury. These actions demonstrate adequate understanding of the teaching provided.

3. Which of the following represents a normal serum potassium level?

Correct answer: C

Rationale: The correct answer is 4.0 mEq/L. Normal serum potassium levels typically range from 3.5-5.5 mEq/L. Choice A (1.5 mEq/L) is below the normal range, Choice B (3.0 mEq/L) is also below the normal range, and Choice D (6.0 mEq/L) is above the normal range. Therefore, the only option within the normal range is Choice C (4.0 mEq/L).

4. A nurse who works in a medical care unit is told that she must float to the intensive care unit because of a short-staffing problem on that unit. The nurse reports to the unit and is assigned to three clients. The nurse is angry with the assignment because she believes that the assignment is more difficult than the assignment delegated to other nurses on the unit and because the intensive care unit nurses are each assigned only one client. The nurse should most appropriately take which action?

Correct answer: D

Rationale: In this scenario, the nurse feeling that the assignment is more difficult than what other nurses received should approach the nurse manager of the intensive care unit to discuss the assignment. By doing so, the nurse can seek clarification on the rationale for the assignment or confirm if it is genuinely more challenging. Refusing the assignment is not appropriate as it could impact patient care. Returning to the medical care unit would be considered client abandonment and does not directly address the conflict at hand. Instructing the nurse manager to involve the nursing supervisor is an aggressive approach that does not directly resolve the issue.

5. Which of the following symptoms is not indicative of autonomic dysreflexia in the client with a spinal cord injury?

Correct answer: C

Rationale: Autonomic dysreflexia is characterized by a sudden onset of symptoms due to an overactive autonomic nervous system. Hypotension is not indicative of autonomic dysreflexia; instead, hypertension is a hallmark sign. Therefore, hypotension is the correct answer. Flushed face, sudden onset of headache, and nasal congestion are classic symptoms of autonomic dysreflexia caused by a noxious stimulus below the level of the spinal cord injury. These symptoms result from the body's attempt to regulate blood pressure when the normal feedback loop is interrupted.

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