While all heart attacks have the potential to be deadly, one type is referred to as the "widow maker" because of its high risk of death. A ST segment elevation myocardial infarction (STEMI) is a severe type of heart attack that occurs when a blockage in a coronary artery causes heart muscle to die; without prompt treatment risk of fatality increases dramatically. Coronary angioplasty, or percutaneous coronary intervention (PCI), is the most common emergency treatment for STEMI...
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