Serum levels of heart attack markers are generally elevated when a patient has an episode of myocardial infarction. Cardiac infarction markers, also known as myocardial injury markers, include cardiac troponin, myoglobin, creatine kinase isoenzymes, etc., which are important for the diagnosis of myocardial infarction and the evaluation of treatment effect.
1. Cardiac troponin: cardiac troponin has high specificity and sensitivity, minor myocardial injury can also cause troponin elevation, including troponin I and troponin T subtypes.
2. Myoglobin: Myoglobin has high sensitivity but low specificity. Myoglobin is usually the earliest to rise after myocardial infarction, and it is also elevated in skeletal muscle injury.
3. Creatine kinase isoenzyme: It helps to diagnose myocardial infarction in the absence of skeletal muscle injury, with a higher specificity than myoglobin, and is also important for the diagnosis of recurrent myocardial infarction.
Elevated markers of myocardial infarction do not necessarily mean myocardial infarction, patients should improve the ECG and other related examinations, and receive standardized treatment under the doctor’s comprehensive judgment.