Emphysema lung disease Essay Example | Topics and Well Written Essays - 750 words

Emphysema lung disease - Essay Example Chronic exposure to cigarette smoke decreased elasticity of the lungs and destroys the alveoli. Another cause of emphysema is deficiency of alpha-1-antitrypsin, a substance that fights a destructive enzyme in the lungs called trypsin. An alpha-1-antitrypsin deficient person cannot fight the destructive effects of trypsin and the lung is slowly destroyed. Though the role of genetics in the development of emphysema is unclear, alpha-1-antitrypsin deficiency may be inherited. Other causes of emphysema are air pollution, abnormal airway reactivity, sex and old age. Air pollution has similar effect on the lungs like cigarette smoke. The pollutants will inflame the airways and destroy the lung tissues. Abnormal airway reactivity, such as bronchial asthma, can lead to emphysema. The differences between male and female hormones are suspected to make more men develop emphysema than women. It is also found that lung function normally declines with age, that lung tissues are destroyed as one gets old and this condition will lead to emphysema. The most common symptom of emphysema is shortness of breath. Due to the collapse of the chest wall, a person with emphysema has to struggle to exhale completely because his airways are close when exhaling. In the advance case of emphysema, a person may engage in "purse-lipped breathing" wherein the person purse his lips, leaving only a small opening. When exhaling, the lips block the flow of air and increase pressure in the collapsed airways. Since air is trapped behind obstructed airways, a person with emphysema may develop a "barrel chest" where the distance from the chest to the back becomes more pronounced. Other symptoms are cough and wheezing and decrease in tolerance for exercise.When experiencing shortness of breath, decrease in the ability to exercise or perform daily activities, a persistent cough or wheezing, consult your doctor since these may be indicative of other diseases such as heart problem and other lung diseases. The doctor can also help in formulating a plan to quit smoking. Watch out if the lips, tongue, fingernails, or skin turn blue since these indicate cyanosis or severe worsening of your lung condition. If these symptoms are seen, rush to the hospital's emergency department. If the doctor suspects emphysema in a patient, he will recommend physical examination, with particular focus on breathing sounds, heart sounds, and general physical appearance. A number of tests may be ordered or performed such as chest x-ray, lung function tests, bloods tests. These tests will gauge the extent of the disease, the remaining lung function, and the presence of lung infections. Looking at the chest x-ray results, the doctor can identify changes in the lungs that may indicate emphysema, detect presence of an infection or a mass in the lung (such as a tumor). The lung function tests will give specific information on how the lungs are working mechanically. In the lung function test, the patient is made to breathe into a tube that is connected to a computer or some other monitoring device. The lung function tests measure how much air the lungs can hold, how quickly the lungs can expel air during expiration, and how much reserve capacity the lungs have for increased demand such as during exercise. The blood tests will check white blood cell count, which in turn indicates an acute

Final project Research Paper Example | Topics and Well Written Essays - 1000 words - 1

Final project - Research Paper Example For example, 2, 3, 5, 7, 11 and 13 among others (Coutinho, 2009, p.46). In public key cryptography, encryption and description permit two conveying gatherings to mask data they send to one another. The sender scrambles, or scrambles, data before sending it. The recipient decodes, or unscrambles, the data subsequent to accepting it. While in travel, the encoded data is muddled to a gatecrasher. Tamper identification permits the beneficiary of data to confirm that it has not been changed in travel. Any endeavor to alter information or substitute a false message for a genuine one will be recognized. Authentication permits the beneficiary of data to focus its cause that is, to affirm the senders personality. Nonrepudiation keeps the sender of data from asserting at a later date that the data was never sent. A certificate is an electronic archive used to recognize an individual, a server, an organization, or some other element and to partner that character with a public key. An authentication gives for the most part perceived evidence of a mans character. Public key cryptography uses authentications to address the issue of mimic. Authentication is the procedure of affirming a personality. In the setting of system cooperation, validation includes the sure ID of one gathering by another gathering. Validation over systems can take numerous structures. Declarations are one method for supporting validation. Customer confirmation is a fundamental component of system security inside most intranets or extranets. For example, a server may oblige a client to sort a name and secret word before conceding access to the server. The server keeps up a rundown of names and passwords; if a specific name is on the rundown, and if the client sorts the right secret key, the server awards access. Customer confirmation in view of authentications is a piece of the SSL convention. The customer digitally signs an arbitrarily produced bit of