Brain Circulation

Brain Circulation - Brain Circulation Haytham Eloqayli...

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Brain Circulation Haytham Eloqayli
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Neurophysiology Haytham Eloqayli Consultant neurosurgery and spine surgery. PhD in neuroscience and epilepsy European specialty I in neurosurgery Jordanian specialty in neurosurgery Norwegian specialty in neurosurgery Ex-Associated prof.-NTNU (Norway)
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Brain Circulation - Total cessation of blood flow to the brain causes unconsciousness within 5 to 10 seconds. CBF (adult) Normal 50-65 ml/100 g/minute Ischemia (reversible) 8-23 ml/100 g/minute Infarction (irreversible) < 8 ml/100 g/minute
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Brain Circulation CBF (adult) depends on Cerebral perfusion pressure (CPP) Autoregulation (MAP, brain metabolism) sympathetic: the large- and intermediate-sized brain arteries
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Brain Circulation CPP= MAP-ICP MAP= DBP + 1/3 (pulse pressure) e.g BP 119/80 MAP= 80 +1/3(119-80) = 93. ICP= 10 mm Hg (130 millimeters of water)
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Normal intracranial pressure CPP = MAP – ICP 70 = 80 10 mm Hg
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Autoregulation - small arterioles and the blood capillaries. blood capillaries:
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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Brain Circulation - Brain Circulation Haytham Eloqayli...

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