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Weekly Health and Fitness Corner

Weekly Health and Fitness Corner

Health & Fitness:Medicine

Acute Ischemic Stroke - Causes;Signs and Symptoms

Acute Ischemic Stroke - Causes;Signs and Symptoms

2023-07-11
Download Right click and do "save link as"

"...the World Health Organization definition of stroke is rapidly developing clinical signs of focal or Global disturbance of cerebral function with symptoms lasting 24 hours or longer or leading to death with no apparent cause other than a vascular origin this means that patients with similar symptoms caused by other causes such as tumors subdural hematomas poisoning or trauma and not considered Strokes so the difference between a stroke and a TI a or a transient ischemic attack is that a TI a is a brief episode of neurological dysfunction typically less than one hour but up to 24 hours with a vascular cause and with no evidence of infarction meaning cell death on Imaging they were previously distinguished by the duration of the neurological symptoms but now a distinguished based on the absence of in fact evidence on it Jing and resolution of symptoms the two main types of stroke ischemic stroke or hemorrhagic stroke with around 80% being ischemic an ischemic stroke is caused by the blockage of blood flow while a hemorrhagic stroke is caused by a rupture and extravasation of blood in the brain or surrounding tissue also note that Strokes with ischemic areas have a risk for breeding there for ischemic stroke can undergo what is known as a hammer dragic transformation there are four main mechanisms for an ischemic stroke the first is thrombosis which is divided into large and small vessel disease large vessel disease involves the common and internal carotid 's the vertebral arteries and The Circle of Willis the main causes of thrombi here include atherosclerosis vasoconstriction dissection and vasculitis small vessel disease involves smaller she's of The Circle of Willis and arteries in the distal vertebral and battler arteries causes here include lightbulb highly gnosis which is a build-up of fatty hyelin matter secondary to hypertension and aging as well as micro after ohms which is small atherosclerosis plaques thrombi can also be caused by Sickle Cell red blood cells clumping together and thrombi may also generate emboli which are the second mechanism for ischemic stroke the emboli are entities that travel in the blood and can be part of a thrombus that has been broken off they can be fat they can be air or even cancer or clumps of bacteria most commonly the source of the embolus is the heart due to atrial fibrillation atrial or ventricular thrombi rheumatic heart disease recent myocardial infarction or even recent coronary artery bypass grafting emboli may also travel from sources..."

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