What is a heart attack?
A heart attack (which is also called myocardial infarction and acute coronary syndrome) occurs when part of the heart muscle is damaged or dies since it is not receiving enough oxygen. Normally, blood from the coronary arteries carries oxygen to the heart muscle. The majority of heart attacks occur when an obstruction made slower or stops blood flow through these arteries.
Heart attacks are generally treatable when you are diagnosed quickly. However, without treatment, heart attacks can be deadly.