Cardiac Markers

Convert BNP between pg/mL, ng/L and pmol/L, and see why BNP and NT-proBNP are different molecules that cannot be read against each other’s thresholds.

Risk-stratify chest pain in the emergency department from history, ECG, age, risk factors and troponin.

Calculate the percentage change between two hs-troponin results, and see why guidelines define a significant delta by absolute change, not percentage.

Classify cardiovascular risk from high-sensitivity CRP using the AHA/CDC categories, and see when the result is not interpretable at all.

Convert NT-proBNP between pg/mL, ng/L and pmol/L, with age-stratified thresholds and why it is the marker to trend on sacubitril/valsartan.

Risk-stratify unstable angina and NSTEMI from seven bedside items, and see why GRACE has largely superseded it for formal risk stratification.

0.04 ng/mL and 40 ng/L are the same result. Convert cardiac troponin I between ng/L, pg/mL, ng/mL and µg/L — and see why no single cut-off can be printed on this page.