| umls-concept:C0027051 | skos:definition | MSH: NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).,CSP: gross necrosis of the myocardium, as a result of interruption of the blood supply to the area.,MEDLINEPLUS: <p>Each year over a million people in the U.S. have a heart attack. About half of them die. Many people have permanent heart damage or die because they don't get help immediately. It's important to know the symptoms of a heart attack and call 9-1-1 if someone is having them. Those symptoms include</p><ul> <li>Chest discomfort - pressure, squeezing, or pain </li><li>Shortness of breath </li><li>Discomfort in the upper body - arms, shoulder, neck, back </li><li>Nausea, vomiting, dizziness, lightheadedness, sweating </li></ul><p>These symptoms can sometimes be different in <a href='http://www.nlm.nih.gov/medlineplus/heartdiseaseinwomen.html'>women</a>.</p><p>What exactly is a heart attack? Most heart attacks happen when a clot in the coronary artery blocks the supply of blood and oxygen to | lld:umls |
