SLHS 1150 Lecture Notes - Lecture 5: Intracranial Pressure, Stroke, Edema
6 Dec 2016
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Document Summary
Trauma that leads to injury of scalp, skull, and/or brain: traumatic brain injury (tbi) Brain damage due to impact of external forces: the brain injury association of america. 85,000 long-term survivors of tbi: most at risk. Also infants and seniors over the age of 65. Causes: falls, motor vehicle accidents (most common, assaults, recreational accidents, occupational accidents. Closed vs open: open head injury. Often seen in combat: closed head injury. Skull and meninges intact but brain is jostled. Phineas gage: railroad construction foreman, ohi: frontal lobe damage. The process of a tbi: tbi is a process, not an event, the secondary injury can be more damaging than the primary injury. Mechanisms of a brain injury: brain contusion. Contusion can occur distant from point of impact. Edema, excess blood, excess csf: diffuse axonal injury. Involves the shearing of axons in the white matter tract: stroke. Caused by decreased oxygen delivery to brain tissue.
