Troponin levels in ACS are monitored to assess what?

• A. To monitor kidney function
• B. To monitor liver enzymes
• C. To check electrolyte balance
• D. To assess myocardial injury

Answer: (D)

Troponin levels are measured in ACS to gauge myocardial injury. Cardiac troponin I and T are highly specific to heart muscle, so when myocytes are damaged by ischemia or infarction, troponin leaks into the bloodstream. Elevations begin about 3–4 hours after injury, peak around 24–48 hours, and can stay elevated for days to a week or more. Serial measurements showing a rising or falling pattern help confirm an acute process and inform prognosis and management. These tests are not used to monitor kidney function, liver enzymes, or electrolyte balance.