Stroke, Ischemic And Ischemic Attacks

There are three types of strokes that cause changes to the brain: Hemorrhagic stroke,Intracerebral hemorrhage and Transient ischemic attack (TIA). Ischemic stroke is the most common form of stroke, accounting for around 87% of strokes.

Tidy’s studies, this type of stroke is caused when an artery in the brain ruptures or leaks blood causing there to be pressure thus damaging the brain cells and causing tissue death.(See Figure 2) Tidy explains that ruptures are caused by conditions such as, hypertension, trauma, blood-thinning medication, or aneurysms (weakness in blood vessels walls). Hemorrhagic strokes are classified as either an intracerebral or a subarachnoid hemorrhagic strokes. An Intracerebral hemorrhagic stroke is the most common. Tidy explains that these are usually caused by leaking blood vessels in the brain. Intracerebral strokes are usually caused by high blood pressure and aging blood vessels. An intracerebral hemorrhagic stroke can also be caused by an

According to the World Health Organization (WHO), the term referred to as a “stroke” is defined as a cerebrovascular accident. This occurs when the blood vessel has a disturbance in its normal flow of blood, usually caused by a clot or rupture in the blood vessel. Following this sudden blockage in the arteries, the brain first starts to lose the exchange of oxygen, nutrients, and vital components which keep it performing optimally, thus leading to death of brain cells (World Health Organization, 2014). Strokes differ in cause and severity. An ischemic stroke is caused by an artery that is totally blocked meaning the brains blood supply is completely cut off. A hemorrhagic stroke is caused by a leaking or ruptured vessel to the brain meaning

What is a stroke? What are the types of strokes? What are the symptoms of stroke? Strokes have been afflicting mankind since creation. A stroke is caused by an interruption of the blood supply to part of the brain, the term stroke comes from the fact that it usually happens without any warning, striking the person from out of the blue. A stroke can happen to anyone, some people are at higher risk for different reasons such as age or family history. Other risk factors include high blood pressure, smoking, being overweight, diabetes, and high cholesterol. According to Conn Foley (1985), “At least 500,000 individuals suffer an episode of each year in the United States. About 2 ½ million survive and with intensive rehabilitation, many can lead active lives” (P. 1). In other words, it is possible to survive and recovery. Having a stroke does not mean that one should give up hope or resign oneself to a life of disability and social withdrawal. Although stroke is relatively common, few people seem to be knowledgeable about its underlying causes, the way in which it produces disability, or how it can be treated and prevented.

A stroke is a “Brain attack” that can happen to anyone at any time. This attack occurs when the blood flow to an area of the brain is cut off. Many may ask the question what causes a stroke. A stroke is caused when the blood flow to an area of the brain is cut off the brain cells are deprived of oxygen and begin to die. Studies show that a stroke occurs every 40 seconds and in every four minutes someone dies from a stroke. (Association) There are three different types of strokes Ischemic stroke, Hemorrhagic Stroke, and Transient Ischemic stroke, and they can all have a huge impact on your health.

Or a cerebral embolism occurs when a clot has travelled into the cerebral circulation which causes local cerebral infarct. Hemorrhagic strokes are caused by blood leaking into the brain because of the damaged vessel in the brain rupturing. Bill has suffered a right hemisphere stroke which can lead to paralysis on this left side, behavioral changes, vision and memory loss stated in Brainfoundation.org.au, (2016).

            Ischemic strokes are strokes on the brain involving obstruction within a blood vessel that is suppling blood to the brain. This type of stroke is caused by atherosclerosis. Atherosclerosis is a condition fatty deposit lining the vessel walls, 87% of stroke are ischemic stroke. There are two types of obstructions that can occur. A cerebral thrombosis which refers to thrombus that develops at the clogged portion of the blood vessel. Also, a cerebral embolism which is a blood clot that forms in the circulatory system (usually near the heart, large arteries of the upper chest, and neck) after formation a portion of this clot can break off and enter the bloodstream which then lead to the blood vessel of the brain, it

(Mayo Clinic Staff, 2016) Within the category of an ischemic stroke, the 2 sub-strokes are: thrombotic and embolic strokes. “A thrombotic stroke occurs when a blood clot forms in one of the arteries that supply blood to (the) brain…may be caused by fatty deposits that build up in arteries and cause reduced blood flow (Mayo Clinic Staff, 2016)”. On the other hand, “An embolic stroke occurs when a blood clot or other debris forms away from your brain…and is swept through (the) bloodstream to lodge in narrower brain arteries (Mayo Clinic Staff, 2016)”. The second category of stroke is the hemorrhagic stroke, which occurs, “…when a blood vessel in (the) brain ruptures (Mayo Clinic Staff, 2016)”. Within this category of stroke, again possess 2 sub-categories: intracerebral and subarachnoid hemorrhages. An intracranial hemorrhage is when a blood vessel in the brain ruptures and leaks it’s contents into the surrounding brain tissue (Mayo Clinic Staff, 2016); conditions such as, “high blood pressure,

Stroke is a brain disease caused by internal bleeding, and lack of blood to the brain. There are two types of strokes, a ischemic stroke and a hemorrhagic stroke. Over 795,000 people in America have a stroke each year. It is possible to prevent or cure a stroke. Strokes are diagnosed with machines or by looking at the symptoms. There are many symptoms and results of a

A stroke, according to the National Stroke Association, is a "brain attack" (“What is stroke?”, 2016). This attack happens when blood flow to the brain is interrupted or blocked. When the blood supply to the brain is stopped the cells in the brain begin to lose function and die. The loss of

Cerebral embolism which is when a blood clot configures in the circulatory system in another site, usually the main arteries in the heart or upper chest. Some of the blood clot then becomes loose and travels in the blood stream to the brain until it gets to a narrow blood vessel. It will then lodge itself causing loss of blood supply. ‘‘Ischemic strokes accounts for about 87 percent of all cases.’’ (Stroke Association, 2017). An additional reason of embolism is atrial fibrillation (an irregular heartbeat or AF) this means that blood clots can form in the heart, the blood clots can dislodge and travel from the heart to other areas of the circulatory system such as the brain. A haemorrhagic stroke is when a weak blood vessel bursts, this causes a bleed on the brain which creates swelling and pressure which damages the tissue and the cells in the brain. There are two types of haemorrhagic stroke; An intracerebral haemorrhage is when a weak blood vessel bursts. it’s caused by high blood pressure and they are less common than ischemic strokes. A subarachnoid stroke is when the burst blood vessel bleeds into the subarachnoid space, the space between the arachnoid membrane and the pia mater surrounding the brain. This type is uncommon and there is no warning or symptoms before it occurs.

Strokes are severe health events that are defined as a formation of a blood clot in the brain that starves a section of the brain. (National Stroke Association, 2016) When this occurs, it causes the tissue downstream of the blood vessel to die. The way these clots form by way of atherosclerosis. In short, it is the build-up of plaque and cholesterol in the blood vessels. This plaque then ruptures and causes a blood clot to form. In many cases the clot forms in another region of the body and travels to the smaller blood vessels in the brain and becomes lodged. (NSA, 2016) There are two main types of strokes that can occur. The first is known as an ischemic stroke. It occurs when a blockage occurs in a blood vessel that is carrying oxygenated

A stroke occurs when an area of the brain has died. Dr. Nicholson explained that this happens when there is a blockage in a blood vessel that supplies that particular area of the brain, or the blood vessel ruptures and leaks into the brain preventing the area from getting blood. As a result the area dies from lack of oxygen and nutrients. A bleeding blood vessel has a higher rate of

There are two different causes of strokes, the first is when the flow of blood to the brain is temporarily stopped due to a clot. The second is when one of the many vessels in the brain bursts and the blood from it leaks into the brain. Blood is essential in the brain as it carries oxygen, nutrients and minerals. Therefore, this short term lack of blood can cause serious injury to the brain, often resulting in death. However, if the person survives, their brain will be damaged and it can affect their way of life drastically.

Stroke is a condition that occur when there is a problem with brain supply of blood. It is off two type.