Coronary artery reperfusion is a medical procedure used to restore blood flow to the heart muscle after a blockage has occurred in the coronary arteries. This blockage can lead to a heart attack, as the heart muscle is deprived of oxygen and nutrients. The two main methods of coronary artery reperfusion are thrombolytic therapy, which involves the use of medication to dissolve the clot, and percutaneous coronary intervention (PCI), which is a minimally invasive procedure to open up the blocked artery. Reperfusion therapy is crucial in preventing further damage to the heart muscle and improving the patient's chances of survival.