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Well, strokes don't cause clots, but sometimes ischemic strokes are caused by blood clots.
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What are two ways that a Cerebrovascular Accident can occur?
A stroke can occur in two ways. In an ischemic stroke, a blood clot blocks or plugs a blood vessel or artery in the brain. About 80 percent of all strokes are ischemic. In an hemorrhagic stroke, a blood vessel in the brain breaks and bleeds into the brain. About 20 percent of strokes are hemorrhagic.
What is ischemic stroke?
A "stroke" is an illness of the brain, the equivalent of a heart attack. There are two general types of strokes. An "ischemic" stroke or a "transient ischemic attack" is a blockage of the flow of blood within the brain. This is typically caused by a blood clot within the brain. If small enough, in a "TIA", the clot is washed away or dissolved, with little aftereffects. A larger or longer-lasting blockage can cause substantial death of brain tissue. The other type is a "hemmorhagic" stroke, in which a blood vessel bursts and blood leaks into the brain.
What are the different types of Stroke?
There are two major kinds of stroke, ischemic and hemorrhagic. In an ischemic stroke a blood vessel becomes blocked, usually by a blood clot and a portion of the brain becomes deprived of oxygen and will stop functioning. A hemorrhagic stroke occurs when a blood vessel that carries oxygen and nutrients to the brain burst and spills blood into the brain. When this happens, a portion of the brain becomes deprived of oxygen and will stop functioning.
What are the 2 different types of stroke?
There are two major kinds of stroke, ischemic and hemorrhagic. In an ischemic stroke a blood vessel becomes blocked, usually by a blood clot and a portion of the brain becomes deprived of oxygen and will stop functioning. A hemorrhagic stroke occurs when a blood vessel that carries oxygen and nutrients to the brain burst and spills blood into the brain. When this happens, a portion of the brain becomes deprived of oxygen and will stop functioning.
What is the difference between an ischemic and hemorrhagic stroke?
The ischemic stroke means that there is lack of blood flow (due to a clot) to part of the brain causing that part to lose cells. The hemorrhagic stroke occurs when a blood vessel breaks and it causes bleeding. About 90% are ischemic strokes.In the second type, oxygen- and nutrient-rich blood is prevented from reaching the brain cells beyond the point of rupture. In addition, leaked blood can irritate and harm the brain cells in the areas where it accumulates. This can make this type more deadly.
Action of anticoagulant in transient ischemic attack?
Anticoagulants serve to prevent clots from forming or becoming larger. During a TIA, a small blood clot has usually gotten itself stuck somewhere in the brain. TIA's usually pass, but without an anticoagulant it is possible that the clot could "snowball" into something much larger that could become stuck and cause a full on ischemic stroke. Therefore, anticoagulants help prevent TIA's & Strokes, and also minimize their effects to some extent.
What is the term for when a blood vessel in the brain becomes clogged?
hemorrhagic strokeOR cerebrovascular accident ("CVA"). CVA can be ischemic (clot that is blocking blood flow) or hemorrhagic in nature.CVA - Cerebro vascular accidentCVA - Cerebro vascular accident
How are strokes?
Strokes are caused by a disruption of blood supply to the brain, often a blood clot.
How do you get a blood clot in your brain?
A blood clot in the brain can cause a TIA, or transient ischemic attack, which causes a non-permanent loss of blood supply and oxygen to an area of the brain. Blood clots in the brain also cause stroke. If not corrected quickly, permanent brain damage will result. Clot "busters" are used to break up the clot and restore blood flow. If you suspect a stroke or TIA it is best to get to an ER.
Is thrombus in external carotid life threatening?
99% of the time it's not. The only danger is IF the clot was close to the beginning of the artery and clot moved into the internal carotid, it COULD cause a stroke. The vast majority of the time, we ignore narrowings in the external carotid.
Could an atrial septum aneurysm cause a small stroke?
Yes, if the aneurysm produced a clot that traveled to the brain.
What are the treatments to a stroke?
Whether ischemic or hemorrhagic, stroke is treated in three stages: prevention, medication and surgery, and rehabilitation. Treatment differs for each type of stroke, however.PreventionTherapies to prevent stroke are based on treating an individual's underlying risk factors. They include medications, surgical intervention and angioplasty and stenting (surgical/endovascular treatment). Ischemic stroke prevention usually involves medication-based treatment for risk factors, drugs to prevent blood clot formation, or surgical or endovascular treatments for narrowed arteries.Hemorrhagic stroke prevention generally focuses on medication-based treatment for risk factors and, in some cases, surgical/endovascular treatment for potential causes of hemorrhage (such as aneurysm or vascular malformations).Medications for Ischemic StrokeTwo broad categories of medications are available to help prevent stroke in high-risk patients (especially those who have had a previous TIA or ischemic stroke). They are anticoagulants such as heparin and warfarin and antiplatelet agents such as aspirin, clopidogrel and dipyridamole. Anticoagulants thin the blood and prevent clotting. Heparin acts quickly and is given intravenously (through a vein) or subcutaneously (beneath the skin) while a patient is in the hospital. Slower-acting warfarin can be given orally and is used over a longer term. These drugs affect the blood's ability to clot and require close monitoring by a physician.Antiplatelet drugs prevent platelet aggregation. Platelets are specialized cells in the blood that initiate a healing process. Large numbers of platelets aggregate (clump together) to form a clot, which can sometimes block an artery or break loose, travel through the bloodstream, and block a smaller artery.Antiplatelet drugs make platelets less sticky and less likely to form clots, reducing the risk of ischemic stroke in patients who have had TIA or prior ischemic stroke.Pharmacological and mechanical clot busters are used for severe, acute ischemic strokes. They are most commonly given intravenously. At Mayo Clinic, specialists may also provide intra-arterial thrombolytic therapy (inject clot busters directly into an artery) and/or mechanical clot disrupting or clot extraction devices, which are also delivered directly into a blocked artery.Surgery, Endovascular Treatments and Other ProceduresThe type of surgery that may be required depends on the type of stroke. Mayo Clinic neurologists, neurosurgeons, neuroradiologists, endovascular surgical neuroradiologists, cardiologists, vascular surgeons and other specialists carefully consider all management options and determine the most appropriate treatment for each stroke patient. Physical medicine and rehabilitation specialists initiate any therapies that may improve a lasting disability. For information about surgical options and other procedures, see ischemic stroke and transient ischemic attack (TIA) and hemorrhagic stroke.RehabilitationThe primary objective of rehabilitation after stroke is to provide the environment that best directs the brain's processes toward recovery. Stroke can cause difficulties in many aspects of life, so rehabilitation often requires specialists from many different disciplines.
