DENNIS POTOKAR / SCIENCE PHOTO LIBRARY DENNIS POTOKAR / SCIENCE PHOTO LIBRARY
Heart attack. Conceptual computer artwork of a heart surrounded by shock waves, representing a heart attack or myocardial infarction. Heart attacks occur when part of the heart muscle dies, following an interruption in its blood supply. They commonly result from a blockage in one of the coronary arteries, which provide the heart with oxygenated blood. Heart attacks cause severe chest pain, which may spread to the arms and throat. If the damage to the heart muscle is severe, heart failure or even death will result.
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