When doctors discover that one of the heart’s major arteries is completely blocked, it often sounds like very bad news. Coronary arteries supply oxygen-rich blood to the heart muscle, and a blockage can reduce blood flow and damage the heart. For many years, doctors believed that heart muscle located beyond a long-term blockage was often […] The post Hidden Heart ‘Detours’ May Show Which Patients Can Avoid Risky Surgery appeared first on Knowridge Science Report .