Coronary Artery Disease
Also called: CAD, Coronary arteriosclerosis
Coronary artery disease (CAD) is the most common type of heart disease. It is the leading cause of death in the United States in both men and women.
CAD happens when the arteries that supply blood to heart muscle become hardened and narrowed. This is due to the buildup of cholesterol and other material, called plaque, on their inner walls. As the buildup grows, less blood can flow through the arteries. As a result, the heart muscle can't get the blood or oxygen it needs. This can lead to chest pain (angina) or a heart attack. Most heart attacks happen when a blood clot suddenly cuts off the hearts' blood supply, causing permanent heart damage.
Over time, CAD can also weaken the heart muscle and contribute to heart failure and arrhythmias. Heart failure means the heart can't pump blood well to the rest of the body. Arrhythmias are changes in the normal beating rhythm of the heart.
National Heart, Lung, and Blood Institute
2007-09-24 08:23:50
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answer #1
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answered by Dr.Qutub 7
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The process of atherosclerosis usually begins early in life and progresses as a person ages, usually without symptoms until it is advanced. For more than half of people with atherosclerosis, the first symptom of the disease is a heart attack.
Atherosclerosis begins as an injury to the inner wall of the artery. In a medical sense, injury can include mechanical, chemical, or infectious damage. The subsequent reaction to the damage can lead to the development of atherosclerotic plaques. The injury changes the qualities of the inner wall of the arteries, leading in increase of certain types of immune cells attaching themselves to the inner wall of the blood vessel.... http://www.helium.com/tm/549425/pronounce-harder-spell-derived
2007-09-24 15:23:33
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answer #2
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answered by evrose 3
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