HSS 1101 Lecture Notes - Traumatic Brain Injury, Blood Vessel, Meninges
Document Summary
Bad cardiovascular health in general, blockage in vessel built up over time: embolic. Blockage originating somewhere else travelled to site of stroke (ie. blood clot: transient stroke, lacunar stroke. ** not how big the vessel is, but location that is important ** When blood vessel bursts, bleeding into/on the brain: intracerebral in the brain, extracerebral on the surface of the brain/ in the meninges. Fundamentals of traumatic brain injury (tbi: the side that gets hit = coup, the side directly opposite = countrecoup due to brain rebounding back. Open skull injuries: increase in pressure, brain swells, exposure of brain, bleeding, During acc/dec injury, axons get compressed then pulled: stretches out axon, damaged. If coup/countrecoup is perpendicular to axon, may cause shearing, very damaging. Generally will have retrograde amnesia (temporally graded) May have post traumatic anterograde amnesia right after injury. Abnormal discharge of neurons that causes sudden and brief abnormalties to brain.
