What is heart attack..!!!???
What is heart attack..? A heart attack occurs when the flow of blood to the heart is severely reduced or blocked. The blockage is usually due to a buildup of fat, cholesterol and other substances in the heart (coronary) arteries. The fatty, cholesterol-containing deposits are called plaques. The process of plaque buildup is called atherosclerosis. A plaque may occasionally burst and generate a clot that restricts blood flow. Part of the heart muscle can be harmed or destroyed by a lack of blood flow.A myocardial infarction is another name for a heart attack.To avoid mortality, a heart attack requires prompt treatment. If you suspect a heart attack, dial 911 or get emergency assistance. What are the symptoms? Heart attack symptoms can be various. Mild symptoms are present in some people. Others display serious symptoms. Some individuals show no symptoms. Typical heart attack signs include: chest discomfort that may be felt as pressure, stiffness, soreness, hurting, or discomfort sprea