Coronary Artery Disease
Leading cause of death
| Download this episode | Coronary artery disease is the leading cause of death in the United States, killing more than 350,000 people every year. About 18.2 million people in this country over the age of 20 have CAD, that’s nearly seven percent of our adult population. | If your coronary arteries become narrowed, they can’t supply enough oxygenated blood to your heart. At first, the restricted blood flow may not become apparent but as the fatty deposits accumulate in your coronary arteries, you may begin to develop some of the symptoms of coronary artery disease. Chest pain is one of the most common ones. If your heart can’t pump enough blood to meet your body’s needs, you may develop shortness of breath or extreme fatigue with exertion. A heart attack happens when an area of plaque in a coronary artery breaks apart, causing a blood clot to form. The blood clot cuts off most or all blood to the part of the heart muscle that’s fed by that artery. Cells in the heart muscle die because they don’t receive enough oxygen-rich blood, causing lasting damage to your heart. In this case, chest pain will not subside and may be associated with sweating, nausea and shortness of breath. If this occurs, seek medical care immediately. | | To determine whether or not you have coronary artery disease, your doctor will ask certain questions about your medical history, do a physical exam and conduct routine blood tests. The doctor may also order one or more diagnostic tests, including an electrocardiogram, or EKG, which records electric signals as they travel through your heart, or an echocardiogram, which uses sound waves to produce images of your heart. If your symptoms occur most often during exercise, your doctor may ask you to walk on a treadmill or ride a stationary bike during an EKG. In other cases, medication to stimulate your heart may be used. To view blood flow through your heart directly, your doctor may inject a special dye into the arteries through a long, thin, flexible tube that is threaded through an artery, usually in the wrist, to the arteries in the heart. The dye outlines narrow spots and blockages on the X-ray images. |
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Restricted blood flow
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February is American Heart Month
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Questions about medical history
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Medications and lifestyle changes
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