Articles On Myocardial Infraction
A
myocardial infarction (MI), commonly known as a heart attack, occurs when a portion of the heart is deprived of oxygen due to blockage of a coronary artery. Coronary arteries supply the heart muscle (myocardium) with oxygenated blood. Without oxygen, muscle
cells served by the blocked artery begin to die (infarct).The cause is often atherosclerosis, a buildup of fatty plaque and other material inside the artery. The plaque is covered by a lining of fibrous material. That lining can rupture, allowing the plaque to be released and a blood clot to form.Irreversible damage begins within 30 minutes of blockage. The goals of treatment are to preserve the heart muscle and to relieve pain, as the pain forces the heart to work harder. Treatments may include medications to improve blood flow and dissolve the clot and
surgery to treat arteries narrowed by atherosclerosis. A network of blood vessels known as coronary arteries surround the heart muscle and supply it with blood that is rich in oxygen and nutrients. The heart muscle needs this continuous supply of oxygen and nutrients to function.A
heart attack occurs when a
coronary artery becomes suddenly blocked, stopping the flow of blood to the heart muscle and damaging it.
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