Essay on Heart Disease

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What is Ischemic Heart Disease?

Ischemic heart disease is caused by an imbalance between the myocardial blood flow and the metabolic demand of the myocardium. Reduction in coronary blood flow is related to progressive atherosclerosis with increasing occlusion of coronary arteries. Blood flow can be further decreased by superimposed events such as vasospasm, thrombosis, or circulatory changes leading to hypoperfusion. (Anversa and Sonnenblick, 1990)

Coronary artery perfusion depends upon the pressure differential between the ostia (aortic diastolic pressure) and coronary sinus (right atrial pressure). Coronary blood flow is reduced during systole because of Venturi effects at the coronary orifices and compression of intramuscular arteries during ventricular contraction.

Factors reducing coronary blood flow include:

Decreased aortic diastolic pressure

Increased intraventricular pressure and myocardial contraction

Coronary artery stenosis, which can be further subdivided into the following etiologies:

Fixed coronary stenosis

Acute plaque change (rupture, hemorrhage)

Coronary artery thrombosis

Vasoconstriction

Aortic valve stenosis and regurgitation

Increased right atrial pressure

40 micron collateral vessels are present in all hearts with pressure gradients permitting flow, despite occlusion of major vessels. In general, the cross-sectional area of the coronary artery lumen must be reduced by more than 75% to significantly affect

The Importance Of Heart Disease

functions. Another thing we found interesting, is that older adults can take half an aspirin a day when taken over a long period of time. It can help reduce ones risk of a heart attack. I think most of us were clueless to this prior to reading this module. It is good that aspirin, among other things is put into place to reduce heart disease. We all agreed that module six was most interesting of all the modules. Danyell and Michelle thought the immune system was a fascinating part of the human body. It's…

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Heart Disease Essay

Heart Disease Awareness Sierra Smith Period: 2 Heart disease is a very well known and very common disease. “Heart disease is an umbrella term for any type of disorder that affects the heart. Heart disease means the same as cardiac disease, but is not cardiovascular,” quoted (Nordqvist). If you’re wondering what cardiovascular disease is,…

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Types Of Heart Diseases

The three heart diseases I researched were chronic valvular disease, dilated cardiomyopathy, and heartworm. All three are life threatening and can be extremely fatal in canines. Chronic valvular disease is the most common heart disease in canines. It has an unknown cause and affects 20 to 40 percent of dogs. Smaller breeds of dogs are most affected. The disease is characterized by deteriorating changes in the heart valves. In most cases the mitral valve is affected. The tricuspid valve is affected…

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Inevitable Heart Diseases

Is a heart disease an inevitable part of growing elder, we have to remember that the heart is a muscle, and like all muscles change with age. All changes in the heart are not certain, but they are changes that inevitable, even on lacks of a disease. For example the heart walls thicken; the heart rates will begin to slow down a little more. Maximum heart rates will decline, When this rate declines, systolic blood pressure rises as the heart works harder to give the body the oxygenated blood it craves…

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Cardiovascular Disease And Heart Failure

all types of heart diseases. More than 80 million people in the United States suffer from some form of cardiovascular disease, which is any disease that affects the heart and blood vessels (Grovenor). Two cardiovascular diseases are Hypertensive heart disease, and heart failure. Hypertensive heart disease can be dangerous and is the leading cause of death from high blood pressure. A sign is when high blood pressure causes the blood vessels to be exiguous, where blood flow to the heart can stop or…

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Heart Disease Essay example

lANGUAGE AND LEARNING HEART DISEASE HEART DISEASE: DANIEL WELDON STUDENT ID: 1108733512 TEACHER: PAMELA LYON DUE DATE 29/3/2013 LANGUAGE AND LEARNING Synopsis Heart disease is the most fatal killer of the 19th century! Killing millions of humans a year with no remorse, all that is seen is the destructive path that has swept over you and your family. Who’s to blame for this out brake of death? Is it fast food, energy drinks, or maybe technology? Obesity is…

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Heart Disease Research Paper

Heart disease is the number one cause of death for both men and women in the United States, claiming approximately 1 million lives annually. Every 33 seconds someone in the United States dies from cardiovascular disease which is roughly the equivalent of a September 11th-like tragedy repeating itself every 24 hours, 365 days a year. More die of heart disease than of AIDS and all cancers combined. By 2020, heart disease will be the leading cause of death throughout the world. This year more than…

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Heart Disease Research Paper

Heart Disease Heart disease is the number one killer of women in the United States. Heart disease is more difficult to diagnose in women than in men. Heart disease refers to any condition affecting the structures or function of the heart and cardiovascular system. Coronary artery disease (including heart attacks), abnormal heart rhythms, congestive heart failure, heart valve disease, congenital heart disease, heart muscle disease (cardiomyopathy), pericardial disease, aorta disease, and vascular…

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Heart Disease Essay example

A heart attack is the most common serious end-result of coronary heart disease, which is caused by blockages of the arteries that feed the heart. Heart attack is also the most common cause of death in both men and women in the U.S. Heart attacks are a major cause of disability and they frequently result in heart failure. In the coronary arteries is the most effective way to prevent heart attacks. Compared to a typical man my age, my risk of having a heart attack is very much below average…

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Heart Disease in women Essay

Heart Disease Risk Factors in Women As a woman, heart disease is a real threat. Usually heart disease is seen as more of a men's issue, but in reality more women die each year than men. That is a fact that is quite astonishing, but real in today's world. A challenge that comes with this chronic disease is the symptoms vary between genders. Fortunately, steps can be taken to understand the unique symptoms and begin to reduce their risk of heart disease, and learn what the risk factors are. Stress…

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