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2. Coronary artery disease (CAD), myocardial ischemia, and myocardial infarct all root from the inability of the heart to pump blood as well as it should, thus resulting in the deprivation of the heart muscles from gaining oxygen and nutrients. CAD is caused by atherosclerosis, which is characterized by its rough interior surface in the artery. Hardening of an artery obstructs the blood flow to tissues. CAD's risk factors are the same as those of atherosclerosis, and they include both non-modifiable and modifiable factors. Non-modifiable risk factors include age, sex, and genetics, while modifiable risk factors that contribute to CAD are obesity, one's diet, cigarette smoking, one's lifestyle, having diabetes, and/or being diagnosed with hypertension.
Coronary artery disease is a heart disease characterized by narrow arteries and restricted blood flow in arteries and is the major cause of morbidity and mortality globally.[1] According to WHO estimation, 6.8% in men and 5.3% in women are affected globally.[2-4] Cardiovascular disease account for 29% of all deaths in Canada; of all the cardiovascular death, 54% and 23% was due to ischemic heart disease and heart attack, respectively. The total costs for heart disease and stroke were more than $20.9 billion every year. [5,6] With more than 1 artery impacted, multivessel coronary artery disease is more complex and more likely accompanied by other comorbidities including diabetes or high blood pressure; multivessel coronary artery disease usually is more difficult to deal with, has worse prognosis and cost more compared with single coronary artery disease. [7]
Coronary artery disease (CAD) is the most common type of multifactorial chronic heart disease. It is a consequence of plaque buildup in coronary arteries. The arterial blood vessels, which begin out smooth and elastic become narrow and rigid, curtailing blood flow resulting in deprived of oxygen and nutrients to the heart [1].
Coronary heart disease is defined by the hardening of the epicardial coronary arteries. The buildup of plaque in the arteries slowly narrows the coronary artery lumen. In order to better understand the physiology of the disease, it is important to first know the basic anatomy of the human heart. The aorta, located in the superior region of the heart, branches off into two main coronary blood vessels, otherwise known as arteries. The arteries are located on the left and right side of the heart and span its surface. They subsequently branch off into smaller arteries which supply oxygen-rich blood to the entire heart (Texas Heart Institute, 2013). Therefore, the narrowing of these arteries due to plaque buildup significantly impairs blood flow throughout the heart.
Cardiovascular Disease is defined by the American Heart Association as “Heart and blood vessel disease”. Atherosclerosis of the arteries, can lead to hypertension, heart failure, arrhythmias, heart valve problems, myocardial infarctions or a stroke (AHA, 2016). In this paper, all of heart and vessel diseases aforementioned, will be considered cardiovascular disease (CVD). According to
Atherosclerosis and Arteriosclerosis The underlying cause of CHD, strokes and other diseases of the blood vessels is usually atherosclerosis. Atherosclerosis is caused by the build up of cholesterol and other fatty substances in walls of arteries. Firstly the deposits form small streaks on the endothelium of the artery, but gradually build up to form patches known as atheromatous plaques. The deposit is called an atheroma and causes the arterial walls to thicken, hence narrowing the lumen of the artery. The onset of an atheromatous plaque may be caused by some physical damage to the artery, sometimes caused by high arterial pressure - hypertension.
Atherosclerosis is defined as the formation of fatty plaques in the walls of arteries, restricting blood flow to deep tissues (Martini).
Heart Disease You need your heart for all your body needs. It pumps about 2000 gallons of blood a day. It takes about 20 seconds for blood to reach every cell in the body. An artery that carries blood out of the heart.
Coronary heart disease or coronary artery disease affects 16.8 million people in the United States and causes more than 607,000 deaths annually (Lemone, chap.30). It is caused by atherosclerosis which is the accumulation of fatty deposits in the arteries causing impaired blood flow to the myocardium. CAD or coronary artery syndrome is usually without symptoms but may induce heart attack, angina and acute coronary syndrome if not properly treated. There are many risk factors associated with CAD like obesity, high cholesterol diet, hereditary, physical inactivity, just to name a few. Patients with CAD may be unable to identify and manage their risks factors. It is imperative for nurses to educate the patient about CAD and measures to enhance their health.
Coronary heart disease occurs when some of the arteries that carry blood to the heart muscle become narrowed with fatty deposits. In this condition fatty deposits called plaque, composed of cholesterol (see later) and fats, build up on the inner wall of the coronary arteries. When arteries are narrowed, the heart is not fully supplied with the oxygen and other nutrients it needs. If an artery is completely blocked, a heart attack occurs. Heart disease is very common.
What causes coronary heart disease? There are several factors that can affect and impair the inferior layer of the coronary arteries which are diabetes, inflammation of the blood vessels, hypertension, smoking, and elevated amounts of particular cholesterols and fats in blood. The risk of getting CHD is obesity/ being overweight, no physical activities, diabetes, hypertension, smoking, family medical history/ genetics, poor dieting, stress, etc.
Coronary Heart Disease (CHD) is the leading cause of death in the United States. 13 million people are affected by this disease. CHD is also called Hardening of the Arteries, CAD. CHD is cause by the build-up of plaque in the arteries that connect to the heart. The build-up is caused by fat materials and other substances that form plaque. The plaque builds-up on the wall of the coronary arteries. The coronary arteries are responsible of the blood flow and oxygen that gets to the heart. The build-up of the fat materials causes the arteries to get narrow, this results in the blood flow and oxygen to the heart to slow down or even stop.
Cardiovascular disease is developed by a build-up of fatty deposits on the inner walls of the blood vessels, which typically takes years to accrue (World Health Organization). The development of the fatty-acid deposits can occur due to an unhealthy diet, physical inactivity, tobacco use, and a harmful intake of alcohol. The behavioral risk factors listed above account for about 80% of cardiovascular disease, with the other 20% being cause by fixed risk factors (age, gender, race).
Cardiovascular disease (CVD) refers to the dysfunctional conditions of the heart, arteries, and veins that supply oxygen to vital life- sustaining areas of the body like the brain, the heart itself and other vital organs. Since the term cardiovascular disease refers to any dysfunction of the cardiovascular system there are many different diseases in the cardiovascular category, and many of these diseases are strongly intertwined. Ischemic Heart Disease is the medical idiom for the obstruction of blood flow to the heart. It is usually due largely in part to excess fat or plaque deposits that narrow the veins that provide oxygenated blood to the heart. This excess fat buildup and plaque are respectively known as arteriosclerosis and atherosclerosis. Hypertension is frequently a result of both arteriosclerosis and atherosclerosis, and can lead to more serious CVDs, such as angina attack (an acute and squeezing chest pain due to inefficient blood flow to the heart), and myocardial infarction( the sudden death of part of the heart muscle). A stroke is a CVD that occurs when there is in inadequate oxygen flow to the brain. An abnormally high or abnormally low heart rate because of the disruption of the natural electric impulses of the heart is called cardiac arrhythmia. Carditis and endocarditis, the infection and inflammation of the heart, can occur as a result of a weak immune system, liver problems, heart surgery, or an autoimmune disorder.
The risk factors for the woman’s condition, myocardial ischemia, are: tobacco, diabetes, high blood pressure, high blood cholesterol, high blood triglyceride level, obesity, and lack of physical activity. Some of these risk factors mentioned, are relevant to the patient. The woman reported that she has a history of cigarette smoking, primary hypertension, high cholesterol, and type II
Etiology Myocardial infarction occurs when the coronary arteries are blocked by a blood clot. It is commonly known as a “heart attack”. The heart needs its own constant supply of oxygen and nutrients to work properly. Two coronary arteries deliver oxygenated blood to the heart, and if one of these two arteries fails or becomes blocked, then a portion of the heart will not acquire the necessary oxygen. This clot could be because of CAD (coronary artery disease), which happens when the inner walls of the coronary arteries thicken because of buildup of cholesterol, fatty deposits, calcium among other elements that are carried in the blood (Boston Scientific, 2009).