Correct mind cell operate requires a relentless supply of oxygen and glucose from the bloodstream. A stroke happens when the blood supply to a part of your mind is interrupted or severely decreased, depriving mind tissue of oxygen and meals and inflicting the mind cell to die.
Varieties of Stroke
There are two chief sorts of strokes: Ischemic stroke and Hemorrhagic stroke.
ISCHEMIC STROKE is the results of a blocked artery because of blood clot. That is the commonest sort of stroke and it’s the reason for 90% of all strokes.The sort of stroke can happen in 2 methods 뇌출혈산재:
Thrombotic stroke – This happens when the blood clot (thrombus) types in an artery that supply blood to your mind because of a blood vessel that’s already slender. The clot deprives part of the mind of oxygen and blood inflicting the cells of that a part of the mind to die. The narrowed blood vessel is often brought on by atherosclerosis – a illness through which the arteries are clogged by fatty deposits known as plaques.
Embolic stroke -That is additionally known as cerebral embolism and it happens when a blood clot or different particles breaks off from a blood vessel away out of your mind and travels by your bloodstream to lodge in narrower mind arteries. The sort of blood clot is known as an embolus. Atrial fibrillation (irregular heartbeat) is the commonest reason behind embolic stroke.
HEMORRHAGIC STROKE – The second chief sort of stroke happens when a blood vessel in part of the mind turns into weak and leaks or ruptures, inflicting blood to leak into the mind (Hemorrhage). Hypertension (hypertension), and Aneurysms (weak spots in blood vessels) are the commonest reason behind mind hemorrhages. It might even be brought on by the rupture of a faulty blood vessel. There are two sorts of hemorrhagic stroke:
Intracerebral hemorrhage is a kind of stroke through which a blood vessel within the mind ruptures and bleeds into the encircling mind tissue and injury the cells. A cerebral hemorrhage (bleeding within the mind) causes stroke signs by depriving blood and oxygen to elements of the mind in a wide range of methods. The sort of hemorrhagic stroke is generally brought on by hypertension as a result of small arteries develop into brittle and are topic to cracking and rupturing as a result of excessive stress.
Subarachnoid hemorrhage – In this kind of hemorrhage, blood accumulates within the house beneath the arachnoid membrane that strains the mind. That is often brought on by the rupture of an aneurysm. It’s often signalled by a sudden, intense headache.
Transient Ischemic Assault (TIA) – That is additionally known as a mini stroke and is brought on by a short lived lower in blood supply to a part of your mind because of a clot or particles. They usually final lower than 5 minutes and have comparable signs like a stroke.