Physorg -- Richard Schulz, a professor of pediatrics and pharmacology in the Faculty of Medicine & Dentistry, and his team were looking at a specific type of cardiac injury called ischemia and reperfusion injury. This happens when a patient suffers a heart attack caused by a blockage in a coronary artery. The sooner the blockage is relieved by reperfusion, which is the resuming of the blood flow, the less overall damage the heart muscle receives and the better the recovery for the patient.