A heart attack happens when one or more of your coronary arteries suddenly becomes blocked, stopping the flow of blood to the heart muscle and damaging it – causing a heart attack. Let’s back up and learn more about your coronary arteries.
Your coronary arteries are a network of blood vessels that surround your heart muscle and supply it with blood that is rich in oxygen and nutrients. Your heart muscle needs this continuous supply of oxygen and nutrients to function. Over time, sometimes one or more of your coronary arteries narrow because of a buildup of cholesterol and fatty deposits (called plaque) on the inner walls. This is called coronary artery disease. When blood flow to your heart is restricted, this can cause chest pain called angina. When one or more of the coronary arteries are completely blocked, a heart attack may occur
Myocardial ischemia, also called cardiac ischemia, reduces the heart muscle's ability to pump blood. A sudden, severe blockage of one of the heart's artery can lead to a heart attack. Myocardial ischemia might also cause serious abnormal heart rhythms.
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Heart attack
What happens during a heart attack?
A heart attack happens when one or more of your coronary arteries suddenly becomes blocked, stopping the flow of blood to the heart muscle and damaging it – causing a heart attack. Let’s back up and learn more about your coronary arteries.
Your coronary arteries are a network of blood vessels that surround your heart muscle and supply it with blood that is rich in oxygen and nutrients. Your heart muscle needs this continuous supply of oxygen and nutrients to function. Over time, sometimes one or more of your coronary arteries narrow because of a buildup of cholesterol and fatty deposits (called plaque) on the inner walls. This is called coronary artery disease. When blood flow to your heart is restricted, this can cause chest pain called angina. When one or more of the coronary arteries are completely blocked, a heart attack may occur
Answer:
Myocardial ischemia, also called cardiac ischemia, reduces the heart muscle's ability to pump blood. A sudden, severe blockage of one of the heart's artery can lead to a heart attack. Myocardial ischemia might also cause serious abnormal heart rhythms.
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