Atherosclerosis: (Hardening & Narrowing of arteries): It is the cause of coronary artery disease in which the walls of the coronary arteries thicken due to accumulation of plaque in the blood vessels.
Causes: Damage to the endothelium (keeps the inside of the arteries toned and smooth to keep blood flowing) caused by high blood pressure, smoking, high cholesterol that leads to formation of plaque as endothelium is damaged. When cholesterol covers the damaged endothelium, cholesterol enters wall of artery. Plaque is a jumble of cholesterol, cells, debris that creates a coating on the artery surface Worst case scenario may be fatal.
Pathophysiology: Insides of Blood vessels are surrounded with cells called endothelium. Endothelium is a semi
The colonists strongly desired independence and separation from Britain once taxation without representation was imposed on them. The colonies struggled to earn their representation in the Parliament of their mother country. They were turned down repeatedly and this caused huge issues for the colonists; it was the complete reason for the Revolutionary War. Therefore, the demand for no taxation without representation was the primary force to motivate America against Britain and it was also a symbol for democracy.
Coronary Artery Disease is when the major vessels supplying the heart with blood, oxygen, and nutrients become blocked, damaged, or diseased. These major vessels (arteries) can become damaged in several ways including but not limited to high blood pressure, inflammation, high cholesterol, high sugar levels, and smoking. Following the initial damage of these vessels can cause even more
Nevertheless, there is an understandable and noticeable link between circulatory related diseases and lifestyle diseases, such as Coronary Heart Disease. Coronary heart disease can occur when fatty acids, such as cholesterol in an inadequate diet, build up in the walls of the coronary artery. These fatty deposits collect minerals and harden to become a plaque. Eventually, this plaque grows and can swells up, forming an aneurism. In some cases, this aneurism may burst leading to instant death. As it continues to grow and swell up, it finally blocks the artery completely and forms blood clots. This is known as coronary thrombosis. A myocardial infarction, or in other words as heart attack, occurs when no oxygen is able to reach the coronary artery and thus it is unable to fulfil its role in providing the heart muscle with a sufficient supply of blood. Heart attacks are very common in the society nowadays, especially occurring in smokers or obesity related diseases (Millar, June 2014)
Sometimes atherosclerosis occurs in the carotid arteries, especially at the bifurcation or the point where the common carotid divides into the internal and external carotids. Atherosclerosis means that a potentially dangerous plaque has formed on the artery wall. Plaque is a sticky material made of fat and calcium which hardens the arteries and can block the flow of blood. This narrowing is sometimes called a carotid artery stenosis, meaning that the carotid artery has narrowed significantly.
Coronary artery disease is one of the common forms of heart disease. It’s caused by the narrowing occurs in the coronary arteries so that reduces the flow of blood to the heart tissues. Through the artery is gradually narrowing because of a substance called plaque builds up inside the wall of coronary arteries, the heart may not get enough blood to work. (coronary artery disease)If the plaque ruptures, a blood clot can form around on its surface. Over the time, the blood clot can completely block the pathway, which can’t let any blood to go through.
After some time passes plaques may solidify therefore limiting blood stream or totally obstructing the corridor. The development of plaque is straightforwardly identified with a people way of life, normal danger elements incorporate stoutness, high blood cholesterol and diabetes. At the point when the endothelium is harmed by blood stream, the cholesterol and fats in the blood get stuck shaping plaques. This outcomes in hypertension due the heart endeavoring to supply obliged levels of blood to the body. In the event that the blood stream to the heart muscles is limited or blocked it may prompt further inconveniences, for example, angina, heart assault or heart
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)
“War is the only proper school for a surgeon” - Hippocrates. That would be the case in the early 20th century. The early 20th century is commonly associated with war, blood shed and conflict. During this time is when lots of people died. People died due to many things; war or battle, lack of medical care, or even due to an epidemic. Medical care was rough back then, the shortage of doctors and the lack of medical facilities made the death toll higher. Today, we see less people die due to epidemics, lack of medical care and even less due to battle. Thats all possible because medical care during the 20th century is very different from today, given that today we have better facilities, more doctors, and more advanced technology.
Many of the risk factors for cardiovascular disease cause problems because they lead to atherosclerosis. Atherosclerosis is the narrowing and thickening of arteries and develops for years without causing symptoms. It can happen in any part of the body. Around the heart, it is known as coronary artery disease, in the legs it is known as peripheral arterial disease. The narrowing and thickening of the arteries is due to the deposition of fatty material, cholesterol and other substances in the walls of blood vessels. The deposits are known as plaques. The rupture of a plaque can lead to stroke or a heart attack. (World Heart Federation).
Coronary artery disease remains number one killer of the western civilization despite 40 years of aggressive drug and surgical interventions (Esselstyn). Usually, pharmaceutical drugs, such as statin, are given to try to slow the progression, but may provide uncomfortable side effects. In fact, the majority of patients discontinue statins within 1 year of treatment initiation (Maningat). Furthermore, surgery is performed to circumvent clogged arteries and literally bypass the symptoms. In the last year, 500,000 coronary bypass procedures were performed (Swaminathan et al). However, these surgeries can have significant risks, including the potential to cause further heart damage, stroke, and brain dysfunction. Thus, it is evident that these way of treatments may not be enough on its own, and that getting to the
Macrophage which is now foam-like accumulates on the blood vessel to form visible fatty streak which then undergoes apoptosis. The plaque continues to grow and hardens narrowing the arteries. This ruptures and causes a blood clot which limits the flow of oxygen-rich blood to the body causing a heart attack, stroke or even death. Factors that are known to predispose to atherosclerosis are physical inactivity, diabetes mellitus, hyperlipidemia, cigarette smoking and hypertension which increase the chances by two-fold by damaging the vascular endothelium. Experimental studies have just shown that excess blood levels of iron can lead to atherosclerosis (Guyton and Hall, 2011).
Atherosclerosis is one of a group of health problems that define coronary artery disease, oftentimes referred to as heart disease. Atherosclerosis is the leading cause of heart disease in the United States. The following is the definition provided by the American Heart Association:
Coronary artery disease (CAD) is caused by fatty buildup in the arteries of the heart. Your arteries are made to carry oxygen infused blood to your heart and other parts of your body if it is filled up with plaque, which is the fatty substance that clogs and blocks up the arteries. If it gets clogged enough to where your heart is not receiving fresh oxygen, you could have a heart attack that could cause very serious damage to your body and could even kill you. When you are younger, you can begin to grow plaque in your blood vessels from not eating right and not exercising regularly. When your arteries are being filled up with plaque they become more narrow and harder for blood to get through as easily as it is supposed to be. When you have
During Niccolo Machiavelli’s time, Italy was the epitome of political conflict. Machiavelli witnessed an array political change from the expulsion of the Medici family to the rise of Girolamo Savanorola. He even served as a diplomat to Pope Julius, but when the Medici family regained control of Florence, Machiavelli was dismissed from office and accused of participating in a conspiracy. As a result, he was held in jail for three weeks and was tortured brutally. After his release, Machiavelli began writing The Prince, a book that outlines in a very straightforward and logical manner how a prince should procure and maintain his princedom. Though he is seemingly expressing his thoughts about how men should approach their journey to princedom in his book, The Prince, there is an underlying cynical discernment about the dark shadow of human nature, perhaps a perception that stemmed from Machiavelli’s excruciating time in prison. To Machiavelli, the real truth is that men are simply selfish individuals who are almost animal-like in their actions and will spare no humanity if it means becoming a prince and successfully keeping their princedom. He accepts this truth and proceeds by writing a very systematic and binary how-to manual that describes every decision a prince can make and its outcome. In every chapter, Machiavelli outlines another aspect of ruling a princedom and in every chapter, Machiavelli expresses another cynical attitude toward human nature.
Atherosclerosis is the process in which substances known as plaques, which are made up of cholesterol and platelets, adhere to tears in the walls of arteries. Over time these plaques build up to the point where they occlude blood flow in the arteries. When this happens in the coronary arteries, either directly, as the result of buildup in the arteries themselves, indirectly in the form a clot from another part of the body breaking loose and becoming lodged in the coronary arteries, the usual result is a heart attack.3