Coronary circulation

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    In order to understand why CAD is such a fatal disease, one must understand the coronary circulation of the heart. Coronary circulation is essentially the circulation of blood in the vessels of the myocardium (Heart muscle) that ultimately deliver oxygen-rich blood to the heart. The two main blood vessels that are associated with coronary circulation are the right coronary artery and the left coronary artery. These two major arteries bifurcate off of the Aorta and encircle the heart ultimately meeting at the coronary sinus. The left main coronary artery which runs across the left side of the heart and passes between the pulmonary trunk and left auricle gives origin to two smaller coronary arteries: the anterior interventricular artery (Also…

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    Gangsterization In Nursing

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    (1999), nurses new to the cardiac catheterization laboratory must learn “a complex web of knowledge associated with the functioning of the discourse community” (p.193). This complex web of knowledge includes not only the community’s values and goals, but the communication processes derived from the goals (Beaufort, 1999). The cardiac catheterization laboratory discourse community’s primary goal is to provide quality patient care in a safe, professional, and efficient manner. Members of the…

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    In the script Ms. Young complained that at first, she experienced moderate chest pains that progressively got worse before her heart attack. This pain was described as if someone was putting pressure on her chest and it radiated down to her arms. Additionally, she felt as if she was struggling to breathe, nauseated, weak and sweating. This fits with the diagnosis of coronary artery disease that is the source of developing chronic stable angina and can induce a myocardial infraction like she…

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    Stent Essay

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    Chapter 4 STENT DESIGNS Stents are small meshed spring like tubular structures used in angiolplasty to treat the narrow or weak coronary arteries that carry blood. The implantation of stent prevents the arteries from blowing out for a longer duration after surgery. One of the causes for blockage of arteries is the plaque deposition in the inner parts that eventually block the blood flow and may also lead to heart attacks. …

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    the major service areas in the library. From the lower entrance of the library, a patron would need to walk up two flights of stairs and through a hallway that leads to the third entrance before even seeing the desk, if the patron was looking hard enough. Though it is near a major entry point to the library, it is easy to overlook it as it is hidden behind bulky pillars. Most patrons do not even glance in the direction of the reference desk because it is not near any specific place of use, such…

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    Problems of having global treaty for climate change. There are always some advantage and disadvantage to any kind of law. The same is applied to having the global law for climate change, but there more disadvantage than having advantage of global climate change policy. The main disadvantage of having global law will be on many developing and underdeveloped in this word that need the cheap resource of energy to develop. If there are global treaty for climate change then these countries won’t…

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    After giving and discussing the lesson with the class. I will show the students a video giving different reasons of what causes global climate change. In order to assure active learning of lower level students, I will assign the students an activity where they sit in groups of four. The four students in each group have to create two collages, one for natural causes and one for human causes, and give five statements on each collage of why global warming is a natural cause or a human cause. Two…

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    What Global Warming Will Bring Since the Big Bang, there have been a total of seven Ice ages and seven warm periods in the Earth’s history. Accordingly, when the climate changes, many conditions such as sea levels, temperature, humidity and even the major existence of species have been altered as a natural phenomenon. As for this era, we are in interglacial period. Interglacial period is a period that exists between each Ice age, and its climate is altered so slowly that animals cannot even…

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    A pressing issue in Pakistan is the country’s vulnerability to climate change. In 2011 the Global Climate Change Vulnerability Index ranked Pakistan as the 16th most vulnerable country after enduring many severe floods, droughts and storms. In a country that relies heavily on the agriculture sector, taking up 45% of employment, the effect of climate change on farming is a serious matter that creates a possible threat to everyday lifestyle. While this issue has created discussion within the…

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    Atmospheric Global Circulation is the movement of air caused by solar energy and the interaction of warm and cold air - this convergence forms cells or belts over the Earth’s surface. George Hadley (1685–1768) a British physicist and meteorologist, who first described this theory in 1753, did so using what is known as the Single-Cell Atmospheric Global Circulation Model or Hadley Cell (The Editors of Encyclopædia Britannica, 2007). Hadley’s Single-Cell theory failed to consider the Coriolis…

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