#2 cardiovascular disease -- chpt 15

#2 cardiovascular disease -- chpt 15 - Cardiovascular...

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Cardiovascular Disease (CVD) Statistics Coronary heart disease is the # 1 cause of death in the U.S., accounting over 40% of deaths annually. It is also the leading cause of death in 35-44 yr old males. Over 1.5 million Americans experience a heart attack per year. For 25% of these people, cardiac arrest will be their first symptom.
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Women are 5 times more likely to develop cardiovascular disease than breast cancer. It has been estimated that cardiovascular disease costs our economy over $400 billion annually. Cardiovascular Disease (CVD) Statistics (cont.)
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Major Forms of Cardiovascular Disease CAD (coronary artery disease) Atherosclerosis: build up of plaque on the arteries Hypertension Stroke Congestive heart failure
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Atherosclerosis Atherosclerosis is a form of arteriosclerosis (hardening of the arteries) Arteries become narrow due to plaque buildup This process deprives blood and vital oxygen to specific organs, such as the heart, brain, etc. Results in the following: Coronary Heart Disease Stroke Peripheral Arterial Disease *Atherosclerosis often begins during childhood
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Disease Process Coronary artery disease is the most common form of cardiovascular disease. This process involves the slow gradual buildup of plaque within the arteries. Over many years, plaque reduces the blood supply to the heart tissue. This may result in either the onset of symptoms or a heart attack. See page 462
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Diseased Heart In this heart, a blockage has completely cut off the blood supply in the left anterior descending artery. This has resulted in a “Heart Attack” or myocardial infarction.
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Symptoms of Coronary Artery Disease Both may be a response due to lack of oxygen. Angina is a chest pain or tightness which develops generally upon exertion. An arrhythmia is an irregular heart beat which occurs when the electrical conduction of the heart is disrupted. In severe cases, this can result in cardiac death. **Both may be a response due to lack of oxygen. Note: For many individuals, the first symptom is a heart attack!!
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called the “systolic” and the relaxed pressure is called the “diastolic”. Blood pressure is the force exerted on the
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This note was uploaded on 04/19/2010 for the course CS 1371 taught by Professor Stallworth during the Fall '08 term at Georgia Institute of Technology.

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#2 cardiovascular disease -- chpt 15 - Cardiovascular...

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