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> Epidural (above dura, under skull) - arterial (middle meningeal artery), high trauma/acute pres, lens-shape on CT > Subdural (below dura, above arachnoid) - venous (venous plexus), low-force trauma/insidious (ex. worsening ha over days), crescent shape on CT > Subarachnoid (below arachnoid, above brain) - arterial (Circle of Willis), acute pres w thunderclap ha, goes into fissures & succi & sella on CT > Intraventricular (in the ventricles) > Intraparenchymal (in the meat of the brain)

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Increased ICP Symptoms (0 - 15) = Normal Ranges **Any patient that becomes acutely unconscious, regardless of the cause should be suspected of having ↑ ICP** Causes: · Mass lesion (tumor) · Cerebral edema: o Can lead to SIADH or DI o Do NOT lay flat (might have edema in brain) o Reaches peak in 2 – 4 days, then subsides unless there is underlying pathology (cancer, DM, etc.) o Treatment: § Mannitol § Hypertonic Saline § Surgery (depending on cause trauma v. brain tumor) · NOT done if…

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Signs of Increased Intracranial Pressure are opposite those of Shock [hemorrhage]. That’s a pretty easy way to remember it.

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Arteriovenous Malformation (AVM): a congenital condition characterized by a tangle of blood vessels, located either in the brain or on its surface that bypasses normal brain tissue and directly diverts blood from the arteries to the veins. Clinical manifestations include: intracranial hemorrhages, headaches, seizures, & possible issues with vision, speech, and motor control, depending upon the location. AVMs are not believed to be hereditary. Image: American Stroke Association.

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Etiological Factors and Evolution of Intracranial Hemorrhage in Term New-borns

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Jeffrey Hunter aka (Henry Herman McKinnies, Jr.) (1926 - 1969) American Film and TV Actor- Know for: "King of Kings" 1961, "The Searchers" 1956 - Passed at 42 - "Requiescant in Pace"

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