aivoverenkiertohäiriössä

Aivoverenkiertohäiriö, commonly known as a stroke, is a medical emergency that occurs when the blood supply to part of the brain is interrupted or reduced. This deprives brain tissue of oxygen and nutrients, causing brain cells to die within minutes. There are two main types of stroke: ischemic and hemorrhagic.

Ischemic strokes are the most common, accounting for about 87% of all strokes. They happen when a blood clot blocks a blood vessel in the brain or a narrowed artery leading to the brain. Hemorrhagic strokes occur when a blood vessel in the brain ruptures, causing bleeding into the brain tissue. This bleeding can increase pressure on the brain and damage cells.

Symptoms of a stroke can vary depending on the part of the brain affected and the extent of the damage. Common signs include sudden numbness or weakness in the face, arm, or leg, especially on one side of the body; sudden confusion or trouble speaking or understanding speech; sudden trouble seeing in one or both eyes; sudden trouble walking, dizziness, or loss of balance or coordination; and sudden severe headache with no known cause.

Prompt medical attention is crucial for stroke treatment. The sooner a person receives treatment, the better their chances of recovery and minimizing long-term disability. Treatment depends on the type of stroke and may involve medications to dissolve blood clots, surgery to remove clots, or procedures to control bleeding. Rehabilitation, including physical, occupational, and speech therapy, is often necessary to help patients regain lost function. Risk factors for stroke include high blood pressure, high cholesterol, diabetes, heart disease, smoking, obesity, and a history of previous strokes.