Physiological AdaptationQuestion 101 of 120
A nurse is caring for a client after a myocardial infarction. Which laboratory marker is most specific for cardiac muscle damage?
a.Troponin
b.Total white blood cell count
c.Serum sodium
d.Blood urea nitrogen
Explanation
Troponin is the most specific and sensitive biomarker for myocardial injury and rises within hours of an infarction, guiding diagnosis and treatment.
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