Ekg Measurement and Interpretation at Rest and During Exercise Free Essays

EKG Measurement and Interpretation at Rest and During Exercise Jonathan Murdock March 5, 2013 March 19, 2013 (KIN 375) Purpose: In the United States, people suffer from heart problems every day. According to the Centers of Disease Control and Prevention (CDC), every year about 935,000 people in the United States suffer from a heart attack and about 600,000 die from heart problems. Electrocardiograms (EKG or ECG) provide important information concerning the electrical activity of the heart as well as the quantity and quality of heart contractions. We will write a custom essay sample on Ekg Measurement and Interpretation at Rest and During Exercise or any similar topic only for you Order Now An EKG, along with blood work to measure troponin levels, can definitively determine whether or not a person has suffered from a myocardial infarction. In order to obtain an EKG, electrodes are strategically placed on the limbs and torso of a subject to measure the electrical current that is generated in the heart and transferred to the skin. The electrical signal is first generated in the sinoatrial node (SA node). It then travels to both the left and right atria to cause them to contract. Then, the signal goes to the atrioventricular node (AV node) where it is briefly delayed to allow all of the blood from the atria to move into the ventricles. It then moves through the Bundle of His toward the apex of the heart and then through the Purkinje fibers. This causes contraction of the ventricles to pump blood throughout the body and lungs. The purpose of this lab was to compare EKG at rest with and exercising EKG. In doing so, the subject’s heart health could be determined based on the results of being put under the stress of exercise versus when resting. Methods: Subject: The subject participating in this lab was a college aged (18-25 years) male enrolled in KIN 375. The participant was healthy, exercised regularly, and did not report any history of heart problems. Equipment: The equipment used in this lab included alcohol prep wipes, 10 electrodes and wires, a computer to read the EKG with paper to print EKG strips, a chair, a treadmill, and a timer. Procedures: The first step was to remove the subject’s shirt. Next, all of the areas where electrodes were going to be placed were cleaned with an alcohol prep wipe. Once these areas were dry, electrodes were placed in their proper places; one electrode per limb and six on the torso. The electrodes for the left (LA) and right (RA) upper limbs were placed just under the clavicles near the shoulders. The electrodes for the left (LL) and right (RL) lower limbs were placed at the waist line just above each limb. For the torso, electrode 1(V1) was placed in the fourth intercostal space to the right of the subject’s sternum. Electrode 2 (V2) was also placed in the fourth intercostal space but to the left of the subject’s sternum. Next, electrode 4 (V4) was placed in the fifth intercostal space on the midclavicular line. Then, electrode 3 (V3) was placed halfway between V2 and V4. Next, the sixth electrode (V6) was placed in the fifth intercostal space on the midaxillary line. Lastly, the fifth electrode (V5) was placed halfway between V4 and V6 in the fifth intercostal space. The subject sat on the chair without moving for three minutes to generate a resting EKG. Then, the subject walked 2 mph on the treadmill with a 7. 0% incline for five minutes. This generated an exercising EKG. Lastly, the subject sat on the chair without moving for three minutes to generate a recovery EKG. Results: The subject successfully completed all three EKG recordings. The resting and recovery EKG readings were very easy to read; whereas, the exercising EKG had a lot of artifact that made it difficult to read. Artifact is something that is not â€Å"heart made† and usually comes from movement. The exercising EKG also had the most QRS complexes due to the fact that the subject’s heart rate was the highest while exercising. Discussion: As previously stated, an EKG measures the electrical currents of the heart. There are different waves shown on an EKG. Each wave is represented by a letter. The first small wave is known as the P wave. The P wave represents atrial depolarization and contraction. The next wave is slightly negative and it is known as the Q wave. The Q wave initiates depolarization of the ventricles. The next wave, which is the large positive spike in the wave, is known as the R wave. The R wave represents ventricular depolarization and contraction. The next wave is slightly negative and it is known as the S wave. The S wave represents the negative wave of ventricular depolarization. The last wave is slightly larger than the P wave and it is known as the T wave. It represents ventricular repolarization and relaxation. Since there are three waves that represent ventricular depolarization, they are combined into what is known as the QRS complex. The section of the EKG from the beginning of the P wave to the beginning of the QRS complex represents the ventricular fill time and is known as the PR interval. Ventricular systole, or contraction, is shown by the start of the Q wave to the start of the T wave and is known as the QT interval. Lastly, from the end of the S wave to the start of the T wave, ventricular repolarization is normally isoelectric (on the baseline) and is represented by the ST segment. Any slight changes from normal sinus rhythm in any of these waves could indicate a heart problem. Electrodes were used to measure the electrical current in the heart. The paths from each electrode to another created a lead. Lead I was the path between RA and LA. Lead II was the path between RA and LL. Lead III was the path between LA and LL. The ground electrode was RL. An EKG wave read positive when the current moved toward a positive electrode and it read negative when the current moved toward the negative electrode. At rest, the EKG was much â€Å"cleaner† (less artifact) and the P waves, QRS complexes, and T waves were much easier to identify. During exercise, however, these waveforms were much more difficult to identify because of the large amount of artifact. Compared to at rest, the waveforms were much steeper and quicker which indicated the heart rate was speeding up, contraction and filling times decreased, and the contractions were much more forceful to pump the blood to the necessary tissue. There were a couple factors that could have hindered a completely accurate EKG reading; such as, cheap electrodes, movement of wires, and the placement of electrodes. All of these factors could have affected the EKG reading to cause extra artifact or inaccurate readings of the electrical current. Conclusion: Every year, hundreds of thousands of people die from heart problems. Many of these heart problems could be detected if the individuals had received an EKG. An EKG measures the electrical currents of the heart and shows when there are defects or blocks by the change in waveform. If more people were able to have an EKG when the problems arose, then maybe more lives would have been saved. How to cite Ekg Measurement and Interpretation at Rest and During Exercise, Papers

Of Mice and Men - Prejudice free essay sample

Of Mice And men, there are many examples of prejudice. The main types of prejudice shown in this novel are racial, sexual and social prejudice. This essay is firstly going to look at racial prejudice. There is much racial prejudice shown in of mice and men towards Crooks, the black crippled stable buck. Crooks is more permanent than the other ranch hands and has his own room off the stables and in the barn, he has many more possession than the rest of the ranch hands. This room is made put to be privileged and also because it means he is nearer to the horses but in fact it is really because the other ranch hands do not want him in the bunk house with them. As a result of this prejudice Crooks has become bitter and very lonely. When Lennie comes to pet the puppies, not even realising that Crooks room is â€Å"out of bounds†, Crooks instantly becomes defensive and uncivil, â€Å"I ain’t wanted in the bunk room and you ain’t wanted in my room† but Lennie in his childish innocence is completely without prejudice, â€Å"why ain’t you wanted†, he asks. We will write a custom essay sample on Of Mice and Men Prejudice or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Crooks retaliates to this with: â€Å"Cause I’m black, they play cards in there but I can’t play because I’m black. They say I stink. Well I tell you, all of you stink to me†. This quote shows us that Crooks desperately wants to join I, be accepted, but because of his colour he cannot so he feels the only way he can make himself feel better is to cut himself off further. When Crooks realises that Lennie means no harm he invites him to â€Å"come on in and set a while† Lennie talks to him about George and his dream, it makes Crooks remember his childhood which he looks back on as a kind of heaven. The white kids come to play at our place, an’ sometimes I went to play with them and some of them were pretty nice. My ol’ man didn’t like that. I never knew till long later why he didn’t like that. But I know now†. Crooks did not experience racism directly as a child, this makes his current situation worse as he was not us ed to racism. Crooks is fascinated by the strength of the friendship of Lennie and George. Especially how close they are. Crooks said, â€Å"Well, s’pose, jus’ s’pose he don’t come back. What’ll you do then? Crooks asked these questions as he does not have any friends, and he would not know how losing a friend unexpectedly would feel. He was curious and Envious, about the friendship of Lennie and George, noticing that Lennie is mentally immature, he takes advantage of this situation to â€Å"torture† him mentally, to make him feel better and ease the pain of having others reject him â€Å"Crooks face lighted with pleasure at his torture† he also does this to ease his jealousy towards the friendship Lennie has, but that Crooks will never have. He wants the people to feel the way that he does, completely alone. Crooks goes on to talk about his loneliness â€Å"‘A guy needs somebody to be near him’, he whined: ‘A guy goes nuts if he ain’t got nobody. Don’t make no difference who the guy is, long’s he’s with you’ he cried ‘I tell ya a guy gets too lonely an’ gets sick’† Crooks is looking for sympathy, he is so incredibly lonely that he says being lonely can make you fall ill. Lennie continues to talk about is dream. Crooks, having been on the ranch for quite a while, has witnessed a lot of people with the same dreams, he mocks it â€Å"Nobody ever gets to heaven, and nobody never gets no land† but when Candy comes in and backs up what Lennie has been saying he begins to believe in the dream â€Å"if you†¦ guys want a hand to work for nothing just his keep, why I’d come and lend a hand† Crooks sees the dream as his escape from what he is living in, somewhere like his childhood where his colour would not be an issue. There are different levels of racial prejudice throughout the book. Most of the ranch hands do not socialise with Crooks but would not go out of their way to insult him.

Language Management Relative to Gender, Cultural Background, and Goals of Interaction

The Old GRE Exam and the GRE General Test

The Old GRE Exam and the GRE General Test From time to time, standardized tests go through serious revisions. Test makers hope to make the test more relevant, more inclusive, and more in line with what colleges and graduate schools are looking for in their incoming students. A History of GRE Revisions 1949 The GRE, first created in 1949 via the Educational Testing Service (ETS) and administered at Prometric Testing centers, is no exception as it has gone through a number of changes. 2002 The earliest versions of the GRE only tested Verbal and Quantitative reasoning, but after October of 2002, the Analytical Writing Assessment was added.  Ã‚   2011 In 2011, ETS decided that the  GRE needed a  major  overhaul, and decided to create the Revised GRE exam, complete with a new scoring system, new types of questions, and a completely different testing system that not only changed the difficulty of the test as students progress, but allowed students to mark answers to go back to questions previously skipped or change answers. It also allowed for students to select more than one answer as correct if the test question indicated to do so.   2012 In July 2012, ETS announced an option for users to customize their scores called ScoreSelect. After testing, on test day, testers can choose to send just their most recent scores or all of their test scores to colleges and universities to which they would like to apply. Schools who receive the scores will not know whether or not the test-takers have sat for the GRE  once or more than once, if they choose to send just one set of scores.   2015 In 2015, ETS changed the name yet again from the Revised GRE back to the GRE General Test, and reassured testers not to be worried if they encountered test prep materials with one or the other names used. Old GRE vs. Current GRE General Test So, in case you are researching the GRE or happened to have taken the GRE prior to August of 2011, here is  a comparison between the old (between October 2002 and  August 1, 2011) and the current (post August 1, 2011) GRE exams. GRE Exam Old GRE Exam GRE General Test Design Test questions change based on answers (Computer-Based Test) Test sections change based on answers.Ability to change answersAbility to mark answers and come back (Multi-Stage Test)Ability to use a calculator Structure Old Structure Current Structure Time Approx. 3 hours Approx. 3 hours 45 min. Scoring Scores range from 200-800 in 10-point increments Scores range from 130-170 in 1-point increments Verbal Question Types:AnalogiesAntonymsSentence CompletionsReading Comprehension Question Types:Reading ComprehensionText CompletionSentence Equivalence Quantitative Question Types:Multiple Choice Quantitative ComparisonMultiple Choice Problem Solving Question Types:Multiple-choice Questions - One AnswerMultiple-choice Questions - One or More AnswersNumeric Entry QuestionsQuantitative Comparison Questions AnalyticalWriting Old Analytical Writing DetailsOne Issue EssayOne Argument Essay Revised Analytical Writing DetailsOne Issue EssayOne Argument Essay

Culture and Mental Health Essay Example | Topics and Well Written Essays - 1000 words

Culture and Mental Health - Essay Example The definition of normality is undoubtedly value laden; the issue of culture must be addressed, not only in the treatment process, but in evaluation and diagnosis as well. Embedded in one's culture are beliefs and attitudes regarding spirituality, family structure, gender roles, and health care, all of which affect relationships, the choice of activity, and the preferred environment. In addition, cultural values vary tremendously and must be taken into account when planning any aspect of intervention. The effects of mental illness reach far and beyond the afflicted individual. They touch the family, friends, and caregivers as well. How the symptoms are managed depends on a great degree on the amount of information provided by the mental health professional. In addition, the cultural perspective will often dictate the level of shame and stigma that must be overcome and how treatment will be provided by the mental health system. Russia acknowledges their need for development in terms of their mental health system's community-based programs due to the country's diverse regional contexts. Since 1997, a series of projects were undertaken by Community Rehabilitation and Disability Studies and Moscow Research Institute of Psychiatry are working hand in hand to facilitate the country's need for more community-based programs. Projects are being implemented in Central and South Russia and Siberia regions. The joint venture introduced the ideas and most outstanding performance of community mental health rehabilitation through specialized education and developing local pilot schemes, and assisted growth of parent and consumer support associations. The mental health system in Russia is at a premature phase of modification from an institution-based to a community-based practice. The modification is being strengthened by two factors: a rising perception that community behavior and maintenance is much more pleasing than extensive hospitalization; and, the monetary obligation to augment the proportion of outpatients getting psychiatric care, in opposition to those who are hospitalized. With a growing quantity of people with psychiatric illnesses, the demands upon the existing system of institutionalized care are at an all time elevation. About one fourth of all inpatients in Russia have been hospitalized for more than 12 months and this speed remains fairly steady. Among the patients who were hospitalized less than 12 months, the regular length of their infirmary stay go beyond 70 days per admittance, a very extended time in association with Western nations, with yearly readmission charges relatively high at roughly 23% (Moscow Research Institute of Psychiatry statistics). Given the nonexistence of substitute community service models, there is no choice but to relocate a considerable fraction of long-term inpatients to specialized nursing homes for chronic mental patients, resulting in a course of 'transinstitutionalization' as a replacement for the more desirable 'deinstitutionalization'. An added problem is that existing federal health policies forbid transmittal of finances from institutional services to community alternatives, and no capital has been owed to the improvement of latest community services. Such strategies limit the potential for modification in the mental health system, and will have to be altered. The reform is progressing in the context of very limited knowledge of effective means whereby community-based services might be

Pyschotropic medications used in schizoprenia patients Term Paper

Pyschotropic medications used in schizoprenia patients - Term Paper Example Many with schizophrenia are believed not to be able to live a normal productive life. Many with schizophrenia are unemployed because of the negative stereotypes that come along with the illness, and lack of support inside the work place. Many who are employed are often employed in low paying jobs. Many people who have symptoms of it suffering a will develop severe depression. The depression comes from the isolation someone with schizophrenia has to face. When someone is first diagnosed with schizophrenia, and is put on medication the person will begin to feel normal once again. When the person feels normal, the person might stop taking the medication. This is a problem that many people who have schizophrenia, and many of the caregivers of people with schizophrenia have to face every day. Opening Schizophrenia is a mental illness affecting more people every year. The use of anti psychotics also called psycho tropic medications are used to treat someone with the illness. The illness us ually develops in the late teens, and early twenties for young men, and as late as the thirties for women. Because there are so many forms of the disease there is no one treatment that works best in the treatment of schizophrenia. When someone is first diagnosed with schizophrenia, the person will exhibit symptoms like delusions. The delusions are very real to somebody with schizophrenia. ... The patient would stop taking the medication, because the patient does not think the patient is sick. Body There are many types of psycho tropic drugs used to treat the symptoms of schizophrenia. Some of these drugs are no longer in use. There have been many drugs introduced since the 1980s. When someone is exhibiting symptoms of schizophrenia, the doctors will first attempts to control the schizophrenia by using only one type of anti psychotic medication. In the 1950s there were only four â€Å"typical† medications used to treat the effect’s schizophrenia. A medication that is considered â€Å"typical† would be Thorozine, Haldol, Perphenazine, Fluphenazine. These medications were very useful for somebody who had schizophrenia. Oftentimes many patients who took this medication were able to live normal, and productive life as members of society. Many people in society will shut out someone who has schizophrenia. The reason many people shut out people who have schi zophrenia is from an overwhelming fear that people with schizophrenia are very dangerous people. With the help of the medication there are many people living with schizophrenia, who work regular jobs, and live a normal life as a member of society. When someone begins treatment for schizophrenia, the doctor will determine what type of symptom the person with schizophrenia is having. There are two types of classifications for medication to treat someone living with schizophrenia. There are the above listed â€Å"typical† medications that someone can be treated with. This was the only type of medication available to treat schizophrenia, up until the mid-1980s. There was no treatment for schizophrenia in a till the mid-1950s. In the mid-1950s the â€Å"typical†

Air legislation - mantenance, planning and organisation Essay

Air legislation - mantenance, planning and organisation - Essay Example The aircraft is capable of rotation along the three axes namely; Pitch ,Roll and Yaw, in addition to a linear motion along the specific air route when in- flight. For any type of movement shown by the aircraft ,the weight of the aircraft must be balanced out to maintain the position of the center of gravity for stability. An air craft can have Lateral center of gravity, Longitudinal center of gravity and even Vertical center of gravity. The most important if these being the Lateral cg, which has a critical role in stabilizing the pitch of the aircraft. Lateral cg is further partitioned into Forward and Aft cg. There are limits to the Fore and Aft cg positioning. If the Fore and Aft cg is out of range the aircraft may pitch uncontrollably up or down during take-off ,flight or landing. For example if the cg is too far forward , the plane is likely to tilt forward or crash The Lateral cg position is to be maintained in order to control and stabilize any unwanted roll movement during any stage of flight. The position of Lateral cg can shift if there is an uneven distribution of fuel in the tanks,or in case of an uneven seating arrangement of passengers in a small aircraft. The Vertical cg position is associated with the stability of the flight along the yaw axis. A shift in the vertical cg can result in yawing motion if not compensated for by the pilot during take-off, flight and landing. The center of gravity is a major factor in the stability of an aircraft in all the phases of flight ; take-off ,cruise / flight and landing. A disturbance in the longitudinal, lateral or vertical cg can upset the movement of the aircraft along either of the three axes ;pitch , roll or