Aortic Aneurysms Essay Example | Topics and Well Written Essays - 4500 words

Aortic Aneurysms - Essay Example And in its management, several studies have shown that the newer endovascular repair is much preferred over the conventional open surgery for practical and scientific reasons. Without trying to look like a meta-analysis, I have searched the World Wide Web for articles on this disease entity. And my purpose in doing this is to evaluate the advantages and disadvantages of the methods for its diagnosis, its indications for surgery, methods of surgery, and general outcome after treatment. An aneurysm in its most simple definition is a localized dilatation of an artery involving an increase in its diameter of at least 50 percent in comparison to its original normal diameter. Anatomically, it often represents a weakness in the wall of the artery at any given segment of the aorta. It is noted that there is an increasing incidence of aortic aneurysms lately. Hence, there is also a trend in seeking better methods for diagnosing and treating this pathology. Without trying to look like a meta-analysis, I did an on-line systematic Medline and PubMed search and then reviewed the retrieved articles on the diagnosis, pathogenesis, treatment and current management of aortic aneurysms. ... Just for the purpose of discussion in this paper, I shall classify aortic aneurysms based on their location, since these may appear elsewhere. If the dilation appears on the aortic root they are called aortic root aneurysm. If the dilatation is found in the thoracic aorta, they are called thoracic aortic aneurysms. Aneurysms are also classified based on their location in the thoracic segments of the thoracic aorta; hence we may have an ascending, an arch aneurysm or a descending thoracic aneurysm. Aneurysms found after the descending segment is termed abdominal aortic aneurysm. In the physical examination for suspected aortic aneurysm, the only maneuver of demonstrated value is abdominal palpation to detect abnormal widening of the aortic pulsation. Palpation appears to be safe and has not been reported to precipitate rupture. The diagnosis of aortic aneurysms is confirmed based on findings with ultrasonography or computerized tomography. There is limited data to suggest that abdominal obesity decreases the sensitivity of palpation. Abdominal palpation specifically directed at measuring aortic width has moderate sensitivity for detecting an aneurysm that would be large enough to be referred for surgery but cannot be relied on to exclude aortic aneurysm, especially if rupture is a possibility. The role of genetic factors influencing familial aggregation of aortic aneurysms has also been reviewed. Aortic aneurysms, particularly the thoracic ones, and those in association with multiplex pedigrees represent a new risk factor for aneurysm growth. Pedigree analysis suggests genetic heterogeneity. The primary mode of inheritance seems to be autosomal dominant, but X-linked dominant and recessive modes are also evident. In the past,

Legal Monopolies Essay Example | Topics and Well Written Essays - 500 words

Legal Monopolies - Essay Example The USPS enjoys certain exclusive rights in the regulation of its services, most of which have been placed to discourage potential competition like the private mailboxes. Further, the agency is exempted from any tax cuts, implying that innocent citizens through its lines of credit shoulder most of its operations. With the existence of the monopoly status, however, the citizens have enjoyed exclusive services, which are reliable and serve the whole country without discrimination or regional imbalance. With the backing of the state resources, the USPS continues to serve the American population through the delivery of mails in convenient ways and at affordable prices to the average citizens. However, a closer analysis reveals the incompetent nature accompanying legal monopolies, mainly owing to the low quality services that are associated with their activities. Critics have argued that the privatization of the institution would ensure that it provides better services to the citizens, an d that it increases its efficiency. Indeed, there should be regulations to control the boundary of activities for the legal monopoly as the first step towards transparency and resolution of problems that have continued to face existing monopolies. An analysis of the mail market reveals that the lack of competition has contributed to the deteriorating nature in the quality of services provided. (Feulner) contends that,† Competition would bring down prices, and the post office would have to become more responsive to customers if it wanted to survive†.

Philedelphia Essay Example | Topics and Well Written Essays - 500 words

Philedelphia - Essay Example Popularly known as the Global Exhibition of Arts, the culture associates with the manufacture of mine and soil products. The exhibition is the first most important universal Fair held in the United States, which took place on 10th May 1876 occupying a two hundred and eighty five acre tract of the Fairmount Park thus overlooking the river Schuylkill (Exhibition, 2012). The twenty seven year old German immigrant by the name of Hermann J. Schwarzmann had an opportunity to design the fairgrounds that he did exclusively. The ground hosted thirty seven nations and many industrial exhibitions which occupied over two hundred and fifty pavilions belonging to individuals (Exhibition, 2012). The exhibition attracted almost nine million visitors while the population of the United States was forty six million. The exhibition had a lasting accomplishment as there was the introduction of industrial Universal power in America. The industrial power concealed the potency and production of many industrialized nations. Philadelphia became the central city the industrial and cultural practices in America (Exhibition, 2012). The visitors attending the exhibition loomed the fairgrounds mostly from east by means of either horse-drawn trolley or the railway across the today Gerald Avenue Bridge (Exhibition, 2012). There was a glass and steel dome of the Memorial Hall on the Schuylkill river near the exhibition grounds whose flag- studded the towers of the major building grew as the wooded slope of Fairmount Park. The complete site and size of the structures are breathtaking in their natural setting (Exhibition, 2012). As advised, the visitors arrived from the Railway of Pennsylvania Depot recognized as the Parkside Avenue today. They were to arrive promptly for the opening at 9:00 AM, and they had to pay fifty cents for entrance

Visual Analysis paper Assignment Example | Topics and Well Written Essays - 1500 words

Visual Analysis paper - Assignment Example Having emerged around 1910 in Europe, abstractionism disrupted the idea of classical beauty and aesthetics in art. It believed that the first steps towards new concept of abstractionism were made by Vasily Kandinsky, a remarkable painter of Russian descent, who created his abstract watercolors around 1910. Naturally, two world wars made a great contribution to changes in perception of painting and use of abstract concepts in visual art. Abstractionism ran through the works of such prominent innovators of the 20th century as Kazemir Malevich, Mark Rothko, Vasily Kandinsky, Piet Mondrian (and his De Stijl group) and Frank Stella. The core of their legacy is represented by the basic principles of abstractionism, though their styles and perceptions of reflecting the reality in painting differ in certain aspects (for instance, Malevich’s special philosophy of suprematism). Specifically, the two most visible approaches seen in paintings of these artists are surely color field techni que and hard-edge painting. Moreover, there are tendencies of minimalism that could be traced in their styles. Among the mentioned artists, Frank Stella’s period of activity began later (which isn’t surprising as the author was born in 1936) and has endured until nowadays. The artists seems to have absorbed influence of abstractionist school and embodied key concepts in his works. The set of directions preferable for Stella includes hard-edge painting, minimalism and post-painterly abstraction. The latter presupposes distinct edges, harmony or contrast of simple forms and monumentality. Post-painterly abstraction finds its reflection in many works of this prolific painter, and – notwithstanding new elements in the style – it is clear from Stella’s paintings that this style is based mainly on traditions of abstract expressionism, lavishly cultivated by Malevich, Rothko, Kandinsky and Mondrian. It could be stated that Stella’s way of self-expr ession through abstract

The Red Blood cells Lab Report Example | Topics and Well Written Essays - 1500 words

The Red Blood cells - Lab Report Example of RBCs in one smallest square = 1036/5 = 207.2 No. of RBCs in 1mm3 undiluted = 207.2 x 10000 = 2072000 / mm3 The Red Blood cell count according to the improved hemocytometer is 2.07 x 106 mm3. According to this reading the person seems to be anemic which may be due to iron deficiency, folate deficiency, genetic disorders or immune dysfunction. The difference between two readings could be due to many reasons. The high value in the second test can be attributed to inadequate wiping of pipette, improper mixing or uneven distribution in counting chamber. The low value can be due to dilution of contents in pipette by saliva and use of non standard counting chamber and improper cover slip adjustment. Error calculation can result in both high and low values. Even if the second value is correct the women is still anemic. To confirm the findings of both tests a packed cell volume (PCV) or hematocrit test may be done which will give the correct percentage of erythrocyte volume in the blood. S ection B B1 i) According to the JNC 7 Report the BP reading of subject N which is reported to be 125/78 is classified as prehypertension stage since it is greater than the prescribed systole limit of ? 120. Subject K on the other hand will be classified as a patient of hypertension stage – I which has a systolic range of 140-159 and a diastolic range of 90-99. The reading of subject K reported to be 150/90 comes under this category. ii) Mean arterial pressure (MAP) can be estimated through the following formula MAP ? DP + 1/3 (SP – DP) Accordingly subject N has a MAP of 93.67 mmHg while subject K has a MAP of 110 mmHg iii) Auscultation : A phenomenon describing the use of stethoscope in order to listen the internal sounds of the body clearly. It requires considerable clinical experience and is an integral skill which is a part of the examination of three organ systems of the body namely cardiovascular (heart sounds), respiratory (breath sounds) and gastrointestinal (bo wel sounds) Korotkoff sounds : A sound heard during the measurement of blood pressure by a sphygmomanometer. The pressure differences created in the cuff results in turbulence of blood flow which leads to the audible sound known as first korotkoff sound. Korotkoff sounds can be classified into five types. First heard when the pressure in the cuff is equal to the systolic pressure, second and third can be described as murmurs and tapping sounds respectively. Fourth sound is heard at 10mm above diastolic pressure while the last korotkoff sound is heard at the precise diastolic pressure. Oscillometric principle : Another method of measuring blood pressure. It makes use of the same instrument but in addition uses a transducer which gives the oscillation readings of the blood flow. As the pressure in the cuff varies with simultaneous expansion and contraction of brachial artery an oscillation is produced. Hypertension : A medical phenomenon indicating an increased systemic blood pressure . Normal blood pressure is described as ? 120 systolic and ? 80 diastolic. Generally it is classified as primary and secondary hypertension with primary meaning with no apparent cause. Hypertension is a risk factor for many diseases and its control is necessary for a healthy long life. iv) S1 and S2 heart sounds are produced due to the closure of valves in the heart namely the atrioventricular valves and the semilunar valves. On the other hand korotkoff sounds are produced when the pressure in the cuff varies and creates turbulence for the blood flowing through the brachial artery. v) Though appearing to be quite similar heart rate denotes the number of times a heart contracts or a number of apical contractions of the heart which is measured directly with an auscultation on the chest. However the

Federalism and Separation of Powers Essay Example | Topics and Well Written Essays - 500 words

Federalism and Separation of Powers - Essay Example This structural change in the government is embedded in the articles 1-3 of the US constitution and its main agenda is to reduce the tyranny within the country and to control government powers. This essay seeks to analyze the difference between federalism and separation of powers and hence their influence on the current state of governance. In a federal system, the national government grants power to the states government to apply own strategies in their own state and to induce innovation according to the laws of the state. In other words, each state is a free entity and is free to exercise own policies and to engage in diverse government cultures as they deem fit for the people of the particular state (Gerston, 2007). The advocates of this system support it on the ground that it is the best practice that is only effective in managing a diversified population such as one that exists in the United States, and that it allows the local people to have a better access to their leaders (Topher, 2007). In addition, each state is allowed to be creative and to learn from other states that are successful. In this system, the country government reserves most of the powers and acts by controlling power in the United States. However, the federal government has the disadvantage that it allows a non-unified policy implementation which often brings out confusion among the people, and that power control is minimal. The effect of the separation of powers is that the three branches of the government would act as a check and balance mechanism to protect the people over power abuse. Any policy would have to be analyzed by each branch of the government before its implementation. There is quite a difference in the two systems of power sharing with regard to the current system of power sharing in the US government. For instance, in the federal system, the citizens in overlapping states may be faced with confusion and they may

Management Thoery and Practice Essay Example | Topics and Well Written Essays - 1000 words

Management Thoery and Practice - Essay Example Although theories of Weber and Taylor are slightly dated today, they still offer a beneficial perspective. To Weber’s perspective, society, and also the workplace, is something that arises out of a state of chaos, so people want to make order out of chaos and make a workplace as real and rational as possible for them, and often this is in the form of the modern bureaucracy as Weber saw it. All industries have some degree of bureaucracy, and the beauty and hair salon industry is no different. Weber thought that people should look to the past and look at bureaucracies and also how they relate to the present situation, and we can still do this today. Weber also believed in the ideal type of the bureaucracy, or the optimal ideal. The ideal represents the idea, and the actual is represented by how things really are. There are possible problems in the situation because ideal types often do not live up to the real situation. Weber believed that focusing on the bureaucracy would yield positive results that could be construed in the value-neutral position of the bureaucracy. This led to his formulation of the ideal type methodology, which later functionalists would see as an automatic pattern of stability to be looked for in a societal context. Weber saw that the object of science was to make subjective observations of the bureaucracy’s function and look at these observations along methodological lines. Other early bureaucratic theories like those of Taylor stressed the presence of an ideal condition where complex tasks were simplified, so Taylor borrowed these notions and thought about how absolute standards could be put upon the subjectivity and reality observed by social science. â€Å"Taylors strongest positive legacy was the concept of breaking a complex task down in to a number of small subtasks, and optimizing the performance of the subtasks. This positive legacy leads to the stop-watch