![]() AVM is a congenital defect that occurs when some of the blood vessels have structural problems. Another type of hemorrhagic stroke is AVM or arteriovenous malfunctions. The most common type of hemorrhagic stroke is an aneurysm (a blood vessel that bursts) caused by uncontrolled high blood pressure. This bleeding causes compression of some of the surrounding tissues, which results in brain damage. Hemorrhagic stroke occurs when weakened blood vessels within the brain rupture and bleed into the surrounding tissues.This is the most common type of stroke, occurring in 87% of patients. ![]() This prevents oxygen and nutrients from reaching the affected part of the brain. Ischemic stroke occurs when a clot obstructs a blood vessel in the brain.
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