Stroke

A stroke is a medical condition that results in cell death due to decreased blood flow to the brain.

There are two main types of stroke: ischemic: due to lack of blood flow Hemorrhagic: due to bleeding Signs and symptoms of a stroke: it may cause dizziness, difficulties in understanding or communicating, loss of vision and inability to move or respond on one side of the body, pneumonia and loss of bladder control. Stroke symptoms can last for a long time.

Risk factors for Stroke include high blood pressure, high blood cholesterol, smoking tobacco, obesity, previous TIA, diabetes mellitus, blockage of a blood vessel, and atrial fibrillation.

Diagnosis and prevention: Diagnosis is usually based on a physical examination and is accompanied by medical imaging such as MRI or CT scanning, electrocardiogram (ECG) and blood testing to assess risk factors.

Prevention involves the elimination of risk factors, as well as the use of statins, aspirin, surgery to open up artery defect narrowing, and warfarin in those with atrial fibrillation.

Stroke is a leading cause of disability in the U.S. and has declined from the third to fourth leading cause of death recently. 95% of strokes occur in people over 45 years of age and 2/3 of strokes occur in people over 65 years of age.

Between 1990 and 2010, the number of strokes in the developing world increased by 10 percent and in the developed world dropped by 10 percent. Overall, 2/3 of the strokes registered in those over 65 years of age. South Asians are disproportionately high at risk of stroke, contributing 40% of deaths from strokes worldwide. Among women, 60% of stroke deaths occur, but men are 25% more likely than women to suffer from stroke.

Subtopics

Assessment of Stroke Patients | Stroke Etiology | Acute Stroke Imaging | Management of Stroke Patients | Stroke in Consultation | Prevention of First and Recurrent Stroke

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