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Stroke is defined as the death of brain tissue due to the loss of oxygen (cerebral infarction), resulting in permanent and debilitating damage on the body's function, depending on where it may be in the brain. It may be caused by a number of pathological factors, including thrombosis (the abnormal enlargement of the vessel which may lead to turbulent flow and rupture of the vessel), or be secondary to an embolism (blood clot) elsewhere in the body, having been carried there through the systemic circulation.
Permanent damage to the brain tissue can occur if the oxygen supply is inadequate for 10 minutes or more. Interestingly enough, if the clot in a major vessel in the brain is not enough to completely occlude the vessel, the secondary blood supply via the Circle of Willis in the brain may may be able to provide an adequate collateral blood supply to prevent a stroke.
There are many, many causes of ischemic stroke, with Thrombosis, embolic occlusion the most common amongst others. If you have studied Virchow's Triad you may be able to deduce more conclusions as to the nature through which stroke can arise.
Then there is another type of stroke, called a hemorrhagic stroke where blood comes in contact with nerve tissue, resulting in infarction.
Finally, as mentioned briefly above, the area in which the stroke occurs in the brain will affect which areas are affected. For example, if someone is missing movement in their lower limbs on one side of the body, we may suspect that the primary motor cortex area which supplies the contralateral lower limb may be affected by the ischemic necrosis.
What else can I help you with?
What causes antifreeze to make its way into the exhaust of a CR 80 2 stroke?
Blown head gasket.
What are the signs of a blown top end on a two stroke dirt bike?
no compression (easy to push kick starter down)
Is a Tia a precursor to a stroke?
Yes, a transient ischemic attack (TIA) can be a precursor to a stroke. A TIA occurs when there is a temporary disruption of blood flow to the brain, often causing stroke-like symptoms that last for a short period. Experiencing a TIA significantly increases the risk of having a full-blown stroke in the future, making it crucial to seek medical attention and manage risk factors promptly.
Can a Tia lead to a major stroke?
Yes, a Transient Ischemic Attack (TIA) can lead to a major stroke. A TIA is often referred to as a "mini-stroke" and occurs when there is a temporary reduction in blood flow to the brain. While the symptoms of a TIA resolve quickly, it is a significant warning sign, indicating an increased risk of a full-blown stroke in the future. Prompt medical attention and management are crucial to reduce this risk.
How can blown out highlights be fixed in Lightroom?
Blown out highlights in Lightroom can be fixed by adjusting the highlights slider in the Develop module. Decreasing the highlights slider will help recover details in overexposed areas of the image. Additionally, using the whites slider to reduce the brightness of the highlights can also help in fixing blown out highlights.
What is a term for wind blown soil?
The term for wind-blown soil is "loess." Loess is a fine-grained, silty sediment that is transported and deposited by the wind. It is commonly found in regions with strong winds and arid conditions.
Why is your 1995 250 Suzuki quadrunner blowing oil out of the exhaust?
if its a 2- stroke you either imixed your fuel too rich or you have a bad crank seal and trans oil is being blown out the exhaust
What does the presence of dunes indicate about conditions on a planet or moon?
Dunes on the surface of a planet indicates it has loose sand being blown by wind.
What is the past perfect tense of blown?
The past perfect tense of blown is had blown.
What are survival values of sickle cell anemia?
A single copy of the gene results in a person who is unlikely to develop full-blown sickle-cell anaemia, but has a strong resistance to malaria.
Can unused wind blown Gunite particles be dangerous to an indivuals health.?
Gunite particles can be dangerous to health. For workers routinely exposed to the particles, OSHA says that silicosis can develop.
What are the side affects of a diabetic pregnancy?
A diabetic pregnancy is known as "gestational diabetes". There is an increased chance that the pregnant woman will go on to develop full blown after the pregnancy, and there is also the chance that the baby will be large when born. There is also a chance that the baby will go on to develop diabetes in the future.
