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Brain Injury (Cushing's Response (Bradycardia, Irregular breathing,…
Brain Injury
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Management
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Disability following is high (47%) But only small % show + signs- PTSD, belief and depression?
Injury
Diffuse: Hypoxia, axonial injury/swelling- Shear forces
Progressive
B-BB torn, influx of Ca2+, Inflammation, ROs
Focal: Contusion, haemorrhage
Secondary:
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Increased ICP
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Mass Effect reaches certain size-> Decompensation of cerebral blood flow + perfusion pressure. As ICP^, Cerebral blood flow decreases. Herniation occurs
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Uncal herniation: Pressure of uncus on tentorium, pressure on brainstem-> HR + Breathing affected
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Monro-Kellie: Blood, CSF + Brain. Increase in 1 must be compensated by other 2.
Normal ICP- 10mmgHg, <20 abnormal, 40mmHg- severe
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Clinical Response
vomit-RF for ICH, pain, dizziness
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