Ch 19 Cardiovascular Syste Essay

Capingana, D. P., Magalhaes, P., Silca, A. T., Goncalves, M. A., Baldo, M. P., Rodrigues, S. L. (2013). Prevalence of cardiovascular risk factors and socioeconomic level among public-sector workers in Angola. BMC Public Health, 13(1), 1-9. Doi: 10.1186/1471-2458-13-732

Blood vessels are hollow (this hollow space is called the lumen) so as to allow the blood to pass through. They are also lined with endothelium, which prevents the clotting of the blood that passes through.

You need to explain to him the s/s of blood clotting (since he may have too low an INR d/t treatment and he needs to know this). Explain that his a-fib puts him at risk for blood clots.

Heart failure affects nearly 6 million Americans. It is the leading cause of hospitalization in people older than 65. Roughly 550,000 people are diagnosed with heart failure each year (Emory Healthcare, 2014). Heart failure is a pathologic state where the heart cannot pump enough blood to meet the demand of the body’s metabolic needs or when the ventricle’s ability to fill is impaired. It is not a disease, but rather a complex clinical syndrome. The symptoms of heart failure come from pulmonary vascular congestion and inadequate perfusion of the systemic circulation. Individuals experience orthopnea,

Coronary Artery Disease, also known as CAD, is the most common form of heart disease. (Heart and Stroke Foundation, 2009) Coronary Artery Disease obstructs the blood flow in vessels that provides blood to the heart which is caused by the buildup of plaque on the artery walls. (Rogers, 2011, p.87) (Heart and Stroke Foundation, 2009) Plaque is a yellow substance that consists of fat substances, like cholesterol, and narrows or clogs the arteries which prevents blood flow. (Heart and Stroke Foundation, 2009) Plaque can build up in any artery but usually favors large and medium sized arteries. (Heart and Stroke Foundation, 2009)

The heart, blood and blood vessels make up the basis of the cardiovascular system also known as the circulatory system. The average human body contains approximately 5 litres of blood which is carried around the body via a network of blood vessels split into three types; arteries, veins and capillaries. The arteries are the largest of the three vessels and carry blood away from the heart. Veins carry blood to the heart and are smaller than arteries, then finally the smallest vessels known as capillaries distribute the oxygen rich blood to organs whilst simultaneously picking up the waste carbon dioxide and water from the organs to transport back to the heart where it can be pumped into the lungs to be exhaled.

Congestive heart failure is an older name for heart failure. Congestive heart failure takes place when the heart is unable to maintain an adequate circulation of blood in the bodily tissues or to pump out the venous blood returned to it by the veins (Merriam-Webster). The heart is split into two distinct pumping structures, the right side of the heart and the left side of the heart. Appropriate cardiac performance involves each ventricle to extract even quantities of blood over intervals. If the volume of blood reimbursed to the heart develops more than both ventricles can manage, the heart can no longer be an efficient pump.

It is important to recognize the severity of heart disease in both the generic and acquired forms. A typical adult heart has approximately five billion heart cells, all pulsing in sync with every heartbeat. These cells can be de destroyed with many different health conditions like; high blood pressure, blood clots, heart attacks, and other cardiovascular disease. As we age it is evident that out heart is also aging, which age in mind after the first half of our lives cells which have been damaged are unable to replace them selves. Heart failure occurs when the myocardium is unable to meet the body’s metabolic demands. Unlike some organs, the heart has limited, if any, capacity for repair after injury. Heart transplantation remains

One source of great mortality and morbidity in Europe and North America is the cardiovascular disease, Atherosclerosis. It is recognized as a chronic inflammatory disease of the intermediate and large arteries characterized by the thickening of the arterial wall and is the primary cause of coronary and cerebrovascular heart disease (Wilson, 2005). It accounts for 4.35 million deaths in Europe and 35% death in the UK each year. Mortality rate are generally higher in men than pre-menopausal woman. Past the menopause, a woman’s risk is similar to a man’s (George and Johnston, 2010). Clinical trials have confirmed that lipid accumulation, endothelial dysfunction, cell proliferation, inflammation matrix alteration and foam cell formation are

has to work harder pumping blood to the rest of the body. Blood in our

The cardiac cycle describes the coordinated and rhythmic series of muscular contractions associated with the normal heart beat.

During inspection of the heart assessment observe abnormal finding. Inspect the jugular vein and the carotid artery. Note pallor or cyanotic skin color, temperature, turgor, texture, and clubbing of finger. Observe for swelling, edema and ulceration. Clubbing is a sign of chronic hypoxia caused by a lengthy cardiovascular or respiratory. Poor cardiac output and tissue perfusion is noted by cyanosis and pallor. For dark-skinned, inspect his mucous membranes for pallor. Decreases or absent of pulse with cool, pale, and shiny skin, and hair loss to the area, and the patient may have pain in the legs and feet may indicate arterial insufficiency. Ulcerations typically occur in the area around the toes, and the foot usually turns deep red when dependent

This allows your cardiovascular centres in your brain a little bit more latitude as far as controlling your heart rate. If you were to remove a beating heart from someone's body you would find that the heart is no longer being suppressed by the parasympathetic nervous system and it will accelerate to the same pace as the sinoatrial node. The SA node generates action potentials approximately 100 times per minute due to the physiology of the heart, its own permeability to sodium and calcium via its channels, and a host of other things. Anywhere between 80 to 100 beats per minute is normal for the SA node.

veins to the tissues of the body. These walls do not let out blood but

It is the time of progress. The time of supercomputers, space shuttles, and many other wonders of technology. We have walked on the moon. We do our shopping at home via Internet navigation.