Assessment of Antithrombin III and Protein C in Saudi Myocardial Infarction Patients.

Background: Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly referred to as a heart attack, happens when the blood flow to part of the heart stops, causing damage to the heart muscle. Chest pain or discomfort that may flow into the shoulder, arm, back, neck, or jaw is the most common symptom. Most MIs occur due to coronary artery disease.