Arab Board Clinical Pathology Part 1 Practice Questions - Arab Board Clinical Pathology Part 1 Written Examination (ABHS) Exam

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A 68-year-old woman with chronic kidney disease (stage 4) presents with acute chest discomfort. Initial high-sensitivity cardiac troponin T (hs-cTnT) is 38 ng/L (upper reference limit: 14 ng/L). Which laboratory finding best distinguishes an acute non-ST elevation myocardial infarction (NSTEMI) from chronic baseline elevation in this patient?

Elevated baseline serum creatinine A significant rise and/or fall in hs-cTnT on serial testing at 1 to 3 hours A concurrent elevation in serum total creatine kinase (CK) A single troponin value greater than the 99th percentile URL

Correct Answer:

A significant rise and/or fall in hs-cTnT on serial testing at 1 to 3 hours

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