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Stroke is the leading cause of serious long-term disability in the U.S. A stroke occurs every 40 seconds and is the number 5th cause of death within the U.S. The total number of stroke deaths decreased from 2000 to 2015, but the rate of stroke death decline has slowed due to increase rate of stroke death in some U.S. states. Stroke was the second leading cause of death after heart disease around the world in 2015. Ischemic stroke, a stroke resulting from a obstruction within a blood vessel supplying blood to the brain, is the most common type of stroke and accounts for 87

1) Hemorrhagic stroke
2) Transient ischemic attack (TIA)
3) Ischemic stroke
4) Cryptogenic stroke

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Final answer:

A stroke occurs when the blood supply to the brain is interrupted, causing brain cells to die. The most common type is an ischemic stroke, caused by a blockage and making up about 87% of strokes. A hemorrhagic stroke is caused by bleeding due to a ruptured vessel and is more severe, although less common.

Step-by-step explanation:

A stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients. Brain cells begin to die in minutes. A stroke is a medical emergency, and prompt treatment is crucial. Early action can minimize brain damage and potential complications. The main types of strokes include ischemic stroke, which is due to a blockage such as a blood clot, and hemorrhagic stroke, which is due to bleeding from a ruptured blood vessel in the brain.

An ischemic stroke accounts for about 87% of all strokes and occurs when an artery supplying blood to the brain becomes blocked. These blocks are typically caused by blood clots or the gradual build-up of plaque and other fatty deposits. On the other hand, a hemorrhagic stroke happens when a blood vessel in the brain leaks blood or ruptures. The accumulated blood puts pressure on the brain cells surrounding it, which destroys or damages them.

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