An aneurysm is a disease of the arteries which due to a weak spot on a blood vessel, causes an outward bulging or ballooning of the arterial wall. It contributes to more than 25,000 deaths in the United States each year. The pathology of the disease is not well understood and even today there has yet to be a method of predicting a person’s probability of developing one such circumstance. Most un-ruptured aneurysms are incidentally discovered through CT scan or MRI and it has proven to be just as difficult to predict the risk of sudden rupture. According the Brain Aneurism foundation an estimated 6 million people in the United States have an un-ruptured brain aneurysm, at a rupture rate of 8-10 per 100,000 people. It is therefore of paramount importance to develop models that are capable of quantifying the response of the wall structure in the arterial vessel as it succumbs to this degenerative process. …show more content…
Saccular aneurysms usually are discovered in the main arteries of the cerebral circulation and fusiform aneurysms are often found in the abdominal aorta or in the popliteal artery behind the knee. Of particular interest to me are the fusiform type aneurysms which are found in the abdominal aorta, often referred to as Abdominal Aortic Aneurysm (AAA).The aorta, passing over the heart from the left ventricle and running down the backbone is the main artery of the body and supplies oxygenated blood to the circulatory
Anders couldn’t get to the bank until just before it closed, so of course the line was endless and he got stuck behind two women whose loud, stupid conversation put him in a murderous temper. He was never in the best of tempers anyway, Anders – a book critic known for the weary, elegant savagery with which he dispatched almost everything he reviewed.
The Mayo Clinic’s book on High Blood Pressure was full of detailed facts about blood pressure and what it is. This is extremely significant to the experiment because blood pressure is one of the variables being tested. Understanding blood pressure is one of the key components to receiving accurate results from this experiment. Most of the book is on high blood pressure, which is not necessary for the experiment, but the book still had plenty of useful information about blood pressure itself. The book explains that when the heart beats, a surge of blood is released from the left ventricle. It also tells of how arteries are blood vessels that move nutrients and oxygenated blood from the heart to the body’s tissues. The aorta, or the largest artery in the heart, is connected to the left ventricle and is the main place for blood to leave the heart as the aorta branches off into many different smaller
...sures (Milewicz, 2005). Acute dissection may be accompanied by all of the classic signs and symptoms similar to that of a heart attack, or it may be clinically silent. In an effort to decrease the mortality rate of patients suffering from Marfans and have a potentially high risk of aortic dissection, current studies are investigating the safety and practicality of endovascular stent graft repair.
The walls of arteries are made up of three layers same as veins. Its inner endothelium is composed of epithelial cells which is very smooth. This layer helps minimise the friction. The tunica media provides strength and elasticity. It contains smooth muscles, collagen and large amount of elastic fibres.
There are three main types of strokes: ischemic stroke, hemorrhagic stroke, and transient ischemic stroke. Ischemic strokes occur due to an obstruction or clotting of a blood vessel or artery. There are two types of ischemic strokes: embolic and thrombotic strokes. An embolic stroke is when a blood clot or other substance forms in the body, travels through the blood stream, and eventually becomes lodged in a small blood vessel or artery supplying blood to the brain. A thrombotic stroke is when a blockage forms in one or more arteries to the brain. The second type of stroke, hemorrhagic stroke, is due to a rupture of a weakened blood vessel. There are two major ways in which blood vessels can weaken: aneurysm, a ballooning of a weak area in a blood vessel, and arteriovenous malformations (AVM), an abnormal connection of arteries to veins. A hemorrhagic stroke can either be an intraccerebral stroke, a bleed caused by a blood vessel within the brain, or a subarachnoid stroke, an aneurysm rupture in a large artery near the membrane surrounding the brain. Lastly, transient ischemic attacks are temporary traveling clots that cause “miniature” or “warning” strokes.
Strokes are not only the leading cause of mentally disabling adults, but they are also the third most common reason for deaths worldwide (Jarvis, 2012). In general, a stroke, also called a “cerebrovascular accident,” occurs when blood flow of the vascular system is blocked from reaching parts of the brain (Jarvis, 2012). There are two types of stroke, an ischemic stroke or a hemorrhagic stroke, and they differ in the way they affect the vascular system. An ischemic stroke is the most common type of stroke, accounting for 80 percent of all strokes, and it is due to a thrombus or embolus blocking blood vessels supplying the brain (Durukan & Tatlisumak, 2007). A hemorrhagic stroke is less common, but is caused by the rupturing of a blood vessel in the brain and causes bleeding (Jarvis, 2012).
When it comes to death, everyone has a different perspective about it. One might think death is just a beginning, a key to open the door to the afterlife. A release, a way out to a different world. Others might think that death is simply a lesson of life. It teaches one not to waste his or her time but live to enjoy it, while it still last. Live and do whatever one desire before time runs out. Surely, death has many different purposes and meanings. In the short story “Bullet in the Brain” by Tobias Wolff. He uses death as a flashback and a final thought to show the reader the character’s life in the story. In the “An Occurrence at Owl Creek Bridge” by Ambrose Bierce, he uses death to teach the reader that one should stand up and protect the
Stroke is the third leading cause of death and the brain injuries caused by stroke are a huge cause of disability in older adults. There are over 1.2 million stroke survivors in the UK and half of all stroke survivors have a disability following their stroke. A person’s age increases their risk of having a stroke. Most strokes occur between the ages of 65 and 75. There are three main types of strokes. 85% of strokes are ischaemic and occur when a blood clot forms in an artery leading to the brain, stopping the blood supply causing a neurological defect lasting more than 24 hours (Alexander et al., 2011). 15% of strokes are haemorrhagic and result from a weakened blood vessel that has ruptured and bleeds into the surrounding brain. It can be
... usually detected when someone goes into the doctor for a head injury or some kind of pain completely unrelated to the aneurysm. A computed tomography (CT) scan may be used to help identify any bleeding in the brain. Magnetic resonance angiography (MRA), being similar to a CT, uses a magnetic field and pulses of radio wave energy to provide pictures of blood vessels inside the body. A dye is often used during the procedure to make blood vessels appear more clear. Lastly, a cerebral angiogram may be done. This is an x-ray test, where a catheter is inserted into a blood vessel, usually in the groin or arm and moved from the vessel into the brain. A dye is also injected. The dye used allows any problem areas in the artery, to be viewed by a radiologist on their x-ray. Although this test is more invasive, it is the best way to locate a small brain aneurysm (Nisacara).
Stroke can be thrombotic (local formation of a clot), embolic a clot traveling from a remote place in the body), or hemorrhagic (bleeding into the brain). Ischemic stroke is characterized by the sudden loss of blood circulation to an area of the brain, reacting in a corresponding loss of neurologic function. Acute ischemic stroke is more common than hemorrhagic stroke, and is caused by thrombotic or embolic occlusion of a cerebral artery.” Hemorrhagic stroke is less common than ischemic stroke and epidemiologic studies indicate that only 8-18% of strokes are hemorrhagic. However, hemorrhagic stroke is more associated with high mortality rates than mortality in ischemic stroke is.” (Broderick, 2007)
Since the brain is extremely fragile and difficult to access without risking further damage, imaging techniques are used frequently as a noninvasive method of visualizing the brain’s structure and activity. Today's technology provides many useful tools for studying the brain. But even with our highest technology out there we do not know everything definitely. We do have fallbacks at times and these fallbacks can lead to serious problems.
My objective in the long term is to provide therapeutic and counseling services that assist persons suffering with traumatic brain injury (TBI) or acquired brain injury (ABI) in coping and recovering from the mental illnesses that often accompany such tragedies. TBI/ABI has shown a proven link with “anxiety, depression, personality changes, aggression (National Alliance on Mental Illness Veterans Resource Center May 8, 2009 Traumatic Brain Injury)”, as well as many other issues. As the caregiver for a survivor of a rare and deadly strain of encephalitis, I have a personal perspective that I feel brings much to the discussion. I see the information I am currently gathering at Empire State College as the building blocks that pave the way to a thrilling career in a growing segment of the mental health industry. The CDC claims that approximately 1.4 million Americans suffer TBIs annually (Centers for Disease Control Injury Center May 30, 2007 Traumatic Brain Injury in the United States: Emergency Department Visits, Hospitalizations, and Deaths) and it has been called the “signature injury” of the current wars in Iraq & Afghanistan by the National Alliance on Mental Illness. As such, it is my belief that we need to focus time and energy on developing new programs to help these patients to cope with the new limitations and encourage rehabilitation and restoration.
The commonest defect is a narrowing of the main artery from the heart aortic coarctation. A regular ultrasound examination of the heart ... ... middle of paper ... ... s are relatively limited. So far, researchers think it will be possible to increase the final height by 5-10 centimeters, depending on the duration of treatment.
...icot stem. Label and sketch its parts. Take note of the position of the vascular bundle.
The arteries supply blood rich in oxygen to the body, the veins direct deoxygenated blood from the capillaries back to the heart. These roles make up the circulatory function. Blood flow through these blood vessels can be disrupted resulting in peripheral vascular diseases. These diseases occur as a result of narrowing or blocking of the blood vessels. The risk factors of peripheral vascular diseases include diabetes, smoking, high level of cholesterol, overweight, high blood pressure etc. these risk factors result to aneurysms, Raynaud’s diseases, Buerger’s disease, renal artery disease etc. With this diseases, the peripheral vascular system should be assessed to enable nurses and other health personnel make good