Heart Attack: Symptoms, Causes

CAUSES OF HEART ATTACK

 


The heart has two parts, the left ventricle and the right ventricle. A heart attack happens when the walls of one (or both) of these chambers get damaged. This can cause blood to flow backward into the lungs, increasing your risk of a heart attack.

Heart attack is a serious medical condition that damages heart muscle and carries with it the risk of death. Nearly 1.3 million Americans have a heart attack each year; however, only 400,000 people die from their symptoms.

Heart attack can be caused by the buildup of cholesterol on the walls of your arteries and platelets that stick together thanks to the presence of certain fats such as LDL particles. The fatty substances can build up when plaque builds up too fast, or if there are other tiny leaks in the blood vessel.



Heart attack is a sudden death of tissue inside the heart and can be caused by atherosclerosis, which is the buildup of fatty deposits in the arteries. The buildup of these plaque and fatty material can block blood flow in the body's arteries, stopping oxygen-based cells from getting enough oxygen. If there is no treatment for this disease, death can occur within minutes.

The heart muscle must work hard, but the most important factor is no blood flow. When this happens, your heart pumps less effectively, preventing enough oxygen and nutrients from getting where they need to go.

Heart attack is a condition that occurs when the blood supply to part of the heart is blocked or obstructed.



Both coronary disease and atherosclerosis are associated with abnormal intracellular cholesterol metabolism. Both are more common in people who are overweight and have a family history of premature atherosclerosis. In addition, people with established coronary artery disease typically present with myocardial infarction, whereas those without such disease can present with various types of angina pectoris—which may be nonanginal or noncardiac in origin.

 

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