AHA/ACC Guidelines - Cardiac Troponin Highlights
- 99th percentile for cardiac troponin is appropriate cutoff for considering myocardial necrosis
- For contemporary assays, serial cardiac troponin levels should be measured at presentation and 3 to 6 hours after symptom onset in all patients who present with chest pain symptoms. This identifies a rising and/or falling pattern
- In evaluating serial changes, absolute changes appear to have a significantly higher diagnostic accuracy for AMI than relative changes
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