Aorta Essays

causes aortoarterial stenoses/occlusion or dilatation 2 CLASSIFICATION • Several systems of classiAcation have been used o By distribution - The Japanese distribution - typically affects the thoracic aorta and aortic arch with its branches 1 - The Indian distribution- affects the abdominal aorta and the renal arteries 1 o By clinical manifestations phase - Acute/Active- the associated inflammation causes symptoms such as fatigue, night sweats, anorexia and malaise 2 1 - Chronic/Inactive- symptoms

most surgeries, a thoracic aortic dissection repair is more risky, complicated, and challenging. A thoracic aortic dissection is a serious condition in which the inner layer of the aorta, the large blood vessel branching off the heart, tears. Blood surges through the tear, causing the inner and middle layers of the aorta to separate

common threat of this disorder is the damage of the aorta. Marfans can rupture the inner layers of the aorta which causes dissection that leads to bleeding in the wall of the vessel.   Mafans syndrome

Aberrant right subclavian artery (ARSA) is the most common aortic arch anomaly. The estimated incidence is 0.5-2%. They are often asymptomatic, but approximately 10% of people may complain of dysphagia lusoria4 or other compressive symptoms. In ARSA of the Innominate artery, the right subclavian artery arises as its own branch from the aortic arch distal to the origin of the left subclavian artery. Its relationship to the esophagus is variable with 80% posterior to esophagus, 15% between the esophagus

The first bileaflet valves were introduced in 1978. The bileaflet valve is one of the most impactful biomedical discoveries of the past 30 years. One of the main reasons why bileaflet valves were developed was to prevent calcification that was prevalent in the previous mechanical valves. Calcification occurs when calcium deposits stick to the valve flaps which hinders the movement of the valve and the ability to allow fluid to move back in the atrium or ventricle that it originally came from. The

of the aorta, when I was six weeks old I had to receive a surgery to fix my heart. Coarctation of the aorta is the narrowing of part of the aorta, which is the major artery leading out of the heart. This disease is also consider a type of birth defect. The aorta carries blood from the heart to the vessels that supply the body with blood. If part of the aorta is narrowed, it will be difficult for blood to pass through the artery. Doctors can finally diagnosis to fix the problem of the aorta narrowing

aneurysm is critical to managing the condition. The larger the thoracic aortic aneurysm, or the faster it grows, the more likely it is to rupture. The risk of rupture increases when the aneurysm is larger than about twice the normal diameter of a healthy aorta blood vessel. As I said awhile ago there is no symptoms so diagnosing with thoracic aneurysm is very difficult, and often the condition goes undiagnosed until a rupture occurs. If a thoracic aortic aneurysm is suspected, your physician may order the

ventricle where it will be ejected into the largest artery of the body known as the aorta via the aortic valve. The ejected blood will then be distributed throughout the body using a network of blood vessels. The distribution of blood throughout the body occurs via the four divisions of the aorta; the ascending aorta, the aortic arch, the thoracic aorta and the abdominal aorta. Beyond the aortic valve within the ascending aorta, there ate miniature openings called coronary ostia which arise from the left

heart to provide its blood supply. The two primary coronary arteries, the right coronary artery and the left coronary artery, branch from the aorta as it arises from the left ventricle. The left coronary artery is significantly larger and supplies the left heart. The left subclavian artery branches directly from the aorta, the largest artery in the body. The aorta curves above the heart before running down the front of the backbone. “The brachiocephalic artery, also known as the brachiocephalic trunk

1. INTRODUCTION Gaseous mediators, also known as gasotransmitters, are important signalling molecules which can readily cross the cell membranes, and are endogenously produced. Signalling molecules are involved in the communication of basic cellular activities. Gasotransmitters are easily accessible to specific target molecules which larger mediators are unable to access it. CO and NO are well-known gasotransmitters. Many studies have found that H2S is a new candidate of gasotransmitter (Wang, 2002)

Marfan 's Syndrome is a heritable disorder of the connective tissue. It affects many body systems, like the lungs, skeleton, heart, eyes, and arteries. These parts affected may sound like they are unrelated but they are all affected by a mutation in a single gene on Chromosome 15. This gene is named FBN1 for the protein it encodes, fibrillin-1. What causes this mutation is the amino acids that builds proteins mix up a certain code on each protein and it makes the wrong amino acids that are put on

The lung tissues may develop a pneumothorax. This causes the lungs to collapse by letting air escape into the chest cavity. This disease may affect the heart through aortic dilation. The aorta is a blood vessel that is responsible for transporting blood from the heart to the body. In aortic dilation, the aorta may overstretch or become weak. This is the reason for disease being fatal. Being aware of these symptoms can save a

They are vascular structures that emerge from the ventricle of the heart. There are 6 pairs of these arches in embryonic stages which give rise to several major arteries later. They arise from the aortic sac and are present on the ventral and dorsal aorta. As discussed earlier that there are 6 pairs of aortic arches present in embryonic stages giving rise to several arteries are as follows: Arch 1st and 2nd: The first and second arches lost or degenerate soon, but the ruminant of first arch gives rise

into the left ventricle. It is then pumped into the ascending aorta. From the aorta, the oxygen-rich blood is sent to the brain, to the heart muscle, and to the lower body. Blood returning to the heart from the fetal body contains carbon dioxide and waste products as it enters the right atrium. It flows down into the right ventricle. Then it bypasses the lungs and flows through the ductus arteriosus into the descending aorta. Descending aorta connects to the umbilical arteries and from there, blood flows

is the most quoted and widely accepted explanation of the embryological origin of the variants in renal vasculature. The mesonephros, in a 5th week human embryo, is supplied by a group or arteries arising from the lateral surface of the abdominal aorta. As given in Fig 1a. Figure 1 Their primary distribution is noted within the mesonephric area, but later they also supply the reproductive glands, suprarenal bodies, metanephros and diaphragm. The number of mesonephric arteries is variable, and it

Abnormal enlargement or bulging of the aorta, the largest blood vessel of the body is not an unusual condition. An aneurysm is a weakening or ballooning of a blood vessel. This process may occur in any artery in the body. Aneurysms may also occur in any part of the aorta, including the root, the arch, the ascending and the descending aorta. An aneurysm occurs when a segment of the vessel becomes weakened. The pressure of the blood flowing

In early days prior to developing of a heart lung machine doctors could do nothing except to pray god for the survival of the patient. But after lot of work and research the first successful open heart surgery with the help of heart lung machine was performed by Dr John Gibbon Jr on 6th may 1953 by closing an atrial septal defect using a heart lung machine and a screen oxygenator. Since then there has been lot of advances with regard to the machinery and techniques used for cardiac surgeries which

Replacement Taylor Aubin Sinclair Community College October 1, 2015 Aortic dissection is a life threatening condition in which the intima, the inner most layer, of the aorta tears. As the blood flows through the aorta it rushes through this tear resulting in dissection of the intima from the media, the middle layer of the aorta. This unfortunate condition is often fatal if the newly created false lumen ruptures through the aortic wall. Aortic dissection must be immediately detected and treated to

The global left ventricular sphericity index: Ventricular size and shape are the two geometric aspects that change in dilated hearts. The quantitative anatomic observations of Lindbach, in 1960 described the consistent finding of a more spherical shape within the expanded size of the abnormal geometry of remodeled ventricle [75]. This concept of increased sphericity has led to the development of the sphericity index, as a way to quantify the abnormal geometric changes that accompany heart failure

It is located at the top of the heart. The function of the aorta is to bring blood containing oxygen from the left ventricle to the rest of the body. 2. Superior vena cava Vein Superior vena cava vein (vena cava) is a large vein in the body. It is located also at the top of the heart. The function of the superior