Stroke is a condition characterized by reduced blood flow to the brain. It is also known as a cerebrovascular accident or cerebrovascular insult.

Ischaemic strokes are the most common form of stroke, accounting for 80-90% of strokes overall. They are when the blood flow is obstructed by a blood clot, they can be caused by atherosclerosis (which causes 15-25% of strokes overall, they are usually large-artery strokes) or they can be clots from the heart that travel up into the brain (cardioembolic strokes, accounting for 14-30% of ischaemic strokes) and small-vessel strokes (accounting for 19-33% of strokes overall).[1][2]

Haemorrhagic strokes are due to severe bleeds in the brain, leading to reduced blood flow to the brain.[3] It is usually caused by long-term uncontrolled high blood pressure.[3]

Reference listEdit

  1. Arboix, A; Alió, J (August 2010). "Cardioembolic stroke: clinical features, specific cardiac disorders and prognosis.". Current Cardiology Reviews 6 (3): 150–61. PMC 2994107. PMID 21804774. doi:10.2174/157340310791658730. 
  2. Kim, BJ; Kim, JS (January 2014). "Ischemic stroke subtype classification: an asian viewpoint.". Journal of Stroke 16 (1): 8–17. PMC 3961817. PMID 24741560. doi:10.5853/jos.2014.16.1.8. 
  3. 3.0 3.1 Liebeskind, DS; Huff, JS; Kirshner, HS; Krause, RS; Lutsep, HL; Nassisi, D; Saver, JL; Talavera, F (27 May 2014). Kulkarni, R, ed. "Hemorrhagic Stroke". Medscape Reference. United States of America: WebMD. Retrieved 20 September 2014. 

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