AV and Semilunar Heart Valves

AV and Semilunar Heart Valves What Are Heart Valves? Valves are flap-like structures that allow blood to flow in one direction. Heart valves are vital to the proper circulation of blood in the body. The heart has two kinds of valves, atrioventricular and semilunar valves. These valves open and close during the cardiac cycle to direct the flow of blood through the heart chambers and out to the rest of the body. Heart valves are formed from elastic connective tissue which provides the flexibility needed to open and close properly. Malfunctioning heart valves inhibit the hearts ability to pump blood and life giving oxygen and nutrients to the cells of the body. Atrioventricular (AV) Valves The atrioventricular valves are thin structures that are composed of endocardium and connective tissue. They are located between the atria and the ventricles. Tricuspid Valve: This heart valve is located between the right atrium and the right ventricle. When closed, it allows oxygen-depleted blood returning to the heart from the venae cavae to fill the right atrium. It also prevents the back flow of blood as it is pumped from the right atrium to the right ventricle. When open, it allows blood from the right atrium to flow into the right ventricle.Mitral Valve:Â  This heart valve is located between the left atrium and left ventricle. When closed, it allows the left atrium to fill with oxygen-rich blood returning to the heart from the pulmonary veins. It opens to allow blood from the left atrium to fill the left ventricle. Semilunar Valves The semilunar valves are flaps of endocardium and connective tissue reinforced by fibers which prevent the valves from turning inside out. They are shaped like a half moon, hence the name semilunar (semi-, -lunar). The semilunar valves are located between the aorta and the left ventricle, and between the pulmonary artery and the right ventricle. Pulmonary Valve: This heart valve is located between the right ventricle and pulmonary artery. When closed, it prevents the back flow of blood as it is pumped from the right ventricle to the pulmonary artery. When open, it allows oxygen-depleted blood to be pumped from the right ventricle to the pulmonary artery. This blood goes onto the lungs where it picks up oxygen.Aortic Valve: This heart valve is located between the left ventricle and aorta. When closed, it allows blood from the left atrium to fill the left ventricle and prevents the back flow of blood that is pumped from the left ventricle to the aorta. When open, oxygen-rich blood can flow to the aorta and onto the rest of the body. During the cardiac cycle, blood circulates from the right atrium to the right ventricle, from the right ventricle to the pulmonary artery, from the pulmonary artery to the lungs, from the lungs to the pulmonary veins, from the pulmonary veins to the left atrium, from the left atrium to the left ventricle, and from the left ventricle to the aorta and on to the rest of the body. In this cycle, blood passes through the tricuspid valve first, then the pulmonary valve, mitral valve, and finally the aortic valve. During the diastole phase of the cardiac cycle, the atrioventricular valves are open and semilunar valves closed. During the systole phase, the atrioventricular valves close and the semilunar valves open. Heart Sounds The audible sounds that can be heard from the heart are made by the closing of the heart valves. These sounds are referred to as the lub-dupp sounds. The lub sound is made by the contraction of the ventricles and the closing of the atrioventricular valves. The dupp sound is made by the semilunar valves closing. Heart Valve Disease When heart valves become damaged or diseased, they dont function properly. If valves dont open and close properly, blood flow becomes disrupted and body cells dont get the nutrient supply they need. The two most common types of valve dysfunction are valve regurgitation and valve stenosis. These conditions put stress on the heart causing it to have to work much harder to circulate blood. Valve regurgitation occurs when valves dont close correctly allowing blood to flow backward into the heart. In valve stenosis, valve openings become narrow due to enlarged or thickened valve flaps. This narrowing restricts blood flow. A number of complications may result from heart valve disease including blood clots, heart failure, and stroke. Damaged valves can sometimes be repaired or replaced with surgery. Artificial Heart Valves Should heart valves become damaged beyond repair, a valve replacement procedure can be performed. Artificial valves constructed from metal, or biological valves derived from human or animal donors can be used as suitable replacements for damaged valves. Mechanical valves are advantageous because they are durable and dont wear out. However, the transplant recipient is required to take blood thinners for life to prevent blood clot formation due to the tendency of blood to clot on artificial material. Biological valves can be derived from cow, pig, horse, and human valves. Transplant recipients are not required to take blood thinners, but biological valves can wear down over time.

APA Referencing †Citing Social Media Posts

APA Referencing – Citing Social Media Posts APA Referencing – Citing Social Media Posts With social media, information now spreads faster than ever. And you might even need to cite a social media post in an academic paper at some point. Its a strange new world were living in.(Photo Credit) But social media posts need to be cited when they appear in academic writing, so make sure you get it right! In this blogpost, we look at the rules for doing this with APA referencing. Citing a Social Media Post APA treats publicly available posts on platforms like Facebook or Twitter as websites. As such, if mentioning a Twitter account or Facebook page in passing, you need to provide a URL in parentheses within the text: Thousands of people use the Financial Times’ Twitter account (https://twitter.com/ftfinancenews) to get breaking news on the markets. If referring to a specific post or update on social media, however, you’ll need to give a full in-text citation with a named author and date of publication: In a post on Facebook, the former president referred to the Paris Climate Agreement as â€Å"a crucial step forward in the fight against climate change† (Obama, 2016). In such cases, social media posts cited in your work should be accompanied by an entry in the reference list at the end of your document. Reference List In the reference list, APA has specific requirement for social media posts. The general format is: Surname, Initial. [Screen name/given name]. (Year, Month Day). Title or excerpt [Platform]. Retrieved from URL This includes providing a screen name and the date that the post was made. Since many social media posts don’t have a title, an excerpt of up to 40 words can be used instead. For example, the reference for the Facebook post cited above would appear as: Obama, B. [Barack]. (2016, November 4). Today marks a crucial step forward in the fight against climate change, as the historic Paris Climate Agreement officially enters into force. Lets keep pushing for progress [Facebook status update]. Retrieved from https://www.facebook.com/barackobama/posts/10154306132531749 Make sure that the URL provided is specifically for the post in question, not just the page or account from which it is taken. Citing a Personal Communication The rules for citing social media are a little different when the post isn’t publicly available (e.g., if it was a direct message). In this case, you treat the post as a personal communication. To do this, you should indicate that the information comes from a personal communication in parentheses as part of your citation, plus give a date for the message: Dr. Smith (personal communication, January 12, 2017) claimed that the study was promising but inconclusive. Since personal messages are not public, APA does not require you to include them in the reference list.

Mediation vs litigation Essay Example | Topics and Well Written Essays - 1250 words

Mediation vs litigation - Essay Example lawyers to facilitate the presentation of their evidences and often, the lawyers may handle the case in very adversarial and aggressive tones (Tiersma, 1999). As a consequence, the litigation becomes disadvantageous to both parties and those who are weak and those who have no financial capacity to sustain the litigation process fell out of the balance or loss the case (Tiersma, 1999). The court processes is very legalistic in ways. Its communication system is often complex and misunderstood. Clients, often non-lawyers, do not understand the language of the law and lawyers on the other hand, lawyers cannot comprehend well the people’s language who are not fluent on the standard language of the legal system. Many of their documents are lengthy, overwritten, repetitious, and the legal language has its own peculiarity and effects in whatever context (Tiersma, 1999). There is explicit use of the laments of legalism in thoughts and in its logical structure in its documents. It will doubly complicate when lawyers start to argue using Latin maxims (Tiersma, 1999). Legal luminaries argued that the courtroom language has certain structural complexity which could either be syntactic complexity, inter-sentence complexity, phrasal complexity, and lexical complexity (Tiersma, 1999). Syntactic complexity adds to difficulty in comprehension. Although there was a recommend ed use of plain language but when the judge provide information and guidelines about the trial and evidences and about the utilization of the framework of the law (Tiersma, 1999). Since jurors are not equipped with legal knowledge, they weigh such responsibility of determining the verdict but must do so, using their considerable power, without endangering the fairness of the trial (Tiersma, 1999). There is therefore a problem in the language intended for lay jury and the language used by legal luminaries. Hence, the discourse is ruled by grammar constructions, conventions, legal vocabularies and language

Care of Postoperative Patint with Right Fracture Neck of Femur with Essay

Care of Postoperative Patint with Right Fracture Neck of Femur with issue of Pain - Essay Example In addition to this, the patients dosage was changed from 300 mg of gabapentin before admittance, to 600 mg, before being reduced to 300 mg ten days after surgery. The patient controlled analgesic was used for four days following the operation, at which time a 20 mcg Butrans patch was applied in the morning. In compliance with warnings for this drug, it was necessary to reduce the patient controlled report will primarily focus upon the evaluation of the painkillers given to the patient in order to determine whether any relevant factors indicative of adverse reactions are indicated by the facts at hand, and the most likely prognosis given the information presented. Any analysis of patient outcomes must be evaluated with these vulnerabilities in mind. The conditions of this case study entail specific risk factors and comorbidities which will be discussed at length based on the findings of recent research on these subjects. There are various types of hip and femoral fractures that represent a growing health burden for the United Kingdom. Most of the attention dedicated towards this problem is directed towards the elderly population, specifically how to resolve challenges in perioperative care and anesthetics for elderly patients at high risk for femoral fractures. For this case study, it is necessary to assess the quality of care this patient has received, in addition to the most likely prognosis based upon the observed situation and the treatments prescribed. For this case study, background information will be provided concerning the conditions involved, specifically the complications resulting from geriatric hip/femur fractures. In cases of elderly patients, in light of consistent evidence that elderly patients are more susceptible to negative side effects from drugs, as well as various synergistic interactions. This is compounded by the fact that the elderly are more likely to take greater numbers

Influence of the Personal and Professional Background Statement

Influence of the and Professional Background - Personal Statement Example I used to design PowerPoint presentations for monthly divisional gatherings with top-level manage besides supervising, coaching and training lower level staff. From January 2012-March 2012, I worked as the Registration coordinator and public relations assistant in Doha International Maritime Defense Exhibition and Conference. While in this position, I organized events, acted as a link between our company and the governmental body, assisted at the lounge of Qatar Armed Forces chief staffs, recruited, oriented, and trained volunteers. From January 2011- December 2011 I served as the executive assistant to the project director of 20th World Petroleum Congress (QMDI (QF JV) & Qatar Petroleum). I managed the organization's information and communications apart from supervising and training clerical staff. August –December 2010 I worked as the administrator and human resource coordinator of Qatar Real Estate partners and Qatar Sotheby’s International Realty where I helped in t he resolution of specific disciplinary as an arbitrator between the manager and employee. From sep.2006-sep. 2008, I was the cabin attendant for the Qatar Airways Airline-Doha Qatar with chief responsibility of ensuring safety and security among other duties. I have also been a sales executive at Bin Hindi Est. Hugo Boss-Baldessarini in Dubai from ec.2005 –Aug.2006. Aug.2005-1ug.2005 I worked as the retail advisor for Wanadoo France telecom in Tunisia. Educationally, I have certificates in teamwork skills, English business communication, executive secretarial skills cabin attendant from Qatar civil aviation, safety, security and air restraint. I have had recommendations from various personalities recognizing me as extremely creative, smart Microsoft office operation, reliable, ambitious, and elegantly professional.

The Compass: History, and Impact of the Invention

The Compass: History, and Impact of the Invention

Drug and Alcohol Essay -- Drugs, North West of England

The purpose of this essay will be to discuss and focus on the relationship between drug, alcohol and health issues and reference made to the North West of England. Liverpool and the Wirral peninsular will be looked at with regard to the health and social repercussions and the implications drug and alcohol use has on the local communities. A broader look at the United Kingdom and the United States of America along with other parts of the world will also be used to provide a comparison. This essay will start by looking, briefly, at the history of drug and alcohol use and then move on to the problems caused by their use. The essay will then show how the environment and culture play a big part in the rise of illegal drug and alcohol use to date along with the connection with crime rates. The essay will move on to show how the region has come to address these issues and how collaboration between members of the community and public servants, police and local authorities, and National Healt h Services work together to provide positive outcomes. The essay will also show how members of the public form powerful groups that lobby governments and influence legislation. Due to recent legislation and proposed social care reforms, it will be necessary to look at how these could affect the current resources and how they could affect future needs. Where appropriate the essay will use interviews with members of the public, N.H.S staff and service users to provide depth and insight into aspects of the discussion. The assignment will end with a summing up and conclusion to the essay. The history of drug and alcohol use can be traced back many years, Hanson (1995) Informs us that the discovery of Stone Age beer jugs established that alcohol use e... ...ime rates and criminal activity does rise in these areas but there are lots of variables contributing to these factors. The essay looked at particular parts of the North West of the UK and it was seen that as a direct result of rising unemployment and local poverty the increase in drug and alcohol use escalated to epidemic proportions with social exclusion following. At that particular time drugs were readily available and authorities appeared powerless to stop it. The essay moved on to different accounts from other authors, some for the legalization of drugs others proposing more legislation. Generally speaking both sides gave valid arguments to the discussion. In answering the essay question it was felt by the student that drug and alcohol issues are capable of change, however, there are many contributing factors that need to be in place before this happens.