Practice Question
A client is diagnosed with acute myocardial infarction (MI). Which diagnostic laboratory value should the practical nurse (PN) anticipate being the first to elevate to establish a diagnosis of an acute myocardial infarction (MI)?
Answer Choices:
Correct Answer:
Elevated troponin
Rationale:
🟢Troponin is the most sensitive and specific biomarker for acute myocardial infarction (MI).
🟢It begins to rise within 3–6 hours after myocardial injury, peaks at 12–24 hours, and can remain elevated for 7–14 days.
🟢Elevated troponin reflects myocardial cell death, making it the earliest and most reliable test compared to CK-MB.
🟢CK-MB also rises after MI but takes longer and is less specific since it can be elevated in skeletal muscle injury.
🟢Monitoring troponin levels helps confirm the diagnosis and guides treatment decisions such as reperfusion therapy.
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This question is from RN NUR Health Assessment Exam 2 which contains 61 questions.
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Question Details
- Category: RN Nursing Exam(s)
- Subcategory: Examplify Exam(s)
- Domain: Health Assessment
- Answer Choices: 4