Practice Question
A nurse in the emergency department is caring for a client who is experiencing manifestations of a myocardial infarction (MI). Which of the following laboratory tests should the nurse expect the provider to prescribe?
Answer Choices:
Correct Answer:
Troponin
Rationale:
✴️ Troponin is the most sensitive and specific biomarker for cardiac muscle injury.
✴️ It rises within 2–4 hours and stays elevated for days.
✴️ Even small elevations confirm myocardial infarction.
✴️ It differentiates MI from other causes of chest pain.
✴️ It is the gold standard test ordered for suspected MI.
BNP
✴️ BNP evaluates heart failure, not acute MI.
CK (Creatinine kinase)
✴️ CK is not specific to the heart; troponin is superior.
CRP
✴️ Measures inflammation—not diagnostic for MI.
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This question is from Class of 2026 MS2 Final which contains 78 questions.
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Question Details
- Category: LPN Nursing Exam(s)
- Subcategory: LPN HESI Exams
- Domain: Med-Surgical
- Answer Choices: 4
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