Medical research on the prevention of strokes has recently made several breakthroughs. The researchers studied strokes that are caused by an irregular heart rhythm that produces blood clots. When those clots get lodged in an artery that supplies blood to the brain, they reduce blood flow and produce a stroke.
Stroke symptoms typically start suddenly; over seconds to minutes, and in most cases do not progress further. The symptoms depend on the area of the brain affected. The more extensive the area of brain affected, the more functions that are likely to be lost. Some forms of stroke can cause additional symptoms. For example, in intracranial hemorrhage, the affected area may compress other structures. Most forms of stroke are not associated with headache, apart from subarachnoid hemorrhage and cerebral venous thrombosis and occasionally intracerebral hemorrhage.
The outcome after a stroke depends on where the stroke occurs and how much of the brain is affected. Smaller strokes may result in minor problems, such as weakness in an arm or leg. Larger strokes may lead to paralysis or death. Many stroke patients are left with weakness on one side of the body, difficulty speaking, incontinence, and bladder problems.
Up to 75,000 Americans who have strokes each year suffer from irregular heart rhythms. The use of the blood-thinning drug warfarin cuts the risk of a stroke by 67 percent. The data also suggest that aspirin is effective and is reasonable alternative. Doctors might feel more comfortable prescribing aspirin because of the slight possibility that warfarin may lead to internal bleeding.
In separate studies with patients with severe narrowing of the carotid artery, one of the most common causes of a stroke, a form of surgery now exists which effectively prevents strokes. The surgery involves the removal of a portion of the carotid artery in the neck when it is partially blocked by cholesterol deposits. When the blocked portion has been removed, the artery is reconnected with an artificial tube or a vein from elsewhere in the body.
The research on stroke prevention has showed such dramatic results that doctors have abruptly halted the studies in order to make the information immediately available to all patients.
Reference: Benjamin C. Wedro, MD
What does the passage mainly discuss?
Surgery to prevent strokes
Strokes and their causes
New measures for preventing strokes
Medication for stroke victims
Medical research on the prevention of strokes has recently made several breakthroughs. The researchers studied strokes that are caused by an irregular heart rhythm that produces blood clots. When those clots get lodged in an artery that supplies blood to the brain, they reduce blood flow and produce a stroke.Stroke symptoms typically start suddenly; over seconds to minutes, and in most cases do not progress further. The symptoms depend on the area of the brain affected. The more extensive the area of brain affected, the more functions that are likely to be lost. Some forms of stroke can cause additional symptoms. For example, in intracranial hemorrhage, the affected area may compress other structures. Most forms of stroke are not associated with headache, apart from subarachnoid hemorrhage and cerebral venous thrombosis and occasionally intracerebral hemorrhage.The outcome after a stroke depends on where the stroke occurs and how much of the brain is affected. Smaller strokes may result in minor problems, such as weakness in an arm or leg. Larger strokes may lead to paralysis or death. Many stroke patients are left with weakness on one side of the body, difficulty speaking, incontinence, and bladder problems.Up to 75,000 Americans who have strokes each year suffer from irregular heart rhythms. The use of the blood-thinning drug warfarin cuts the risk of a stroke by 67 percent. The data also suggest that aspirin is effective and is reasonable alternative. Doctors might feel more comfortable prescribing aspirin because of the slight possibility that warfarin may lead to internal bleeding.
In separate studies with patients with severe narrowing of the carotid artery, one of the most common causes of a stroke, a form of surgery now exists which effectively prevents strokes. The surgery involves the removal of a portion of the carotid artery in the neck when it is partially blocked by cholesterol deposits. When the blocked portion has been removed, the artery is reconnected with an artificial tube or a vein from elsewhere in the body.
The research on stroke prevention has showed such dramatic results that doctors have abruptly halted the studies in order to make the information immediately available to all patients.
Reference: Benjamin C. Wedro, MD
What does the passage mainly discuss?
Surgery to prevent strokes
Strokes and their causes
New measures for preventing strokes
Medication for stroke victims
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