20 Intracranial Bleeding
ICP
Causes
Symptoms
- lesion above red nucleus: decorticate
- lesion below red nucleus: decerebrate
GCS
Herniation
- Subfalcine: 3, cingulate gyrus goes under false cerebri
- Uncal: 1, medial temporal lobe uncus goes down
- Central: 2, diencephalon goes down against midbrain
- Tonsillar: 5
Subfalcine
- left lesion, left side knocked out, right leg paresis
Uncal
- tentorium: dura matter above cerebellum
- can get false localizing sign, opposide side compression
Transtentorial
- uncal one subtype of transtentorial
- central: 2, thalamus/hypothalamus/etc all herniates
Tonsilar
Bleeding
Epidural
- 3rd branch is middle meningeal
- lucid interval: severe, knocked out, then conscious again
Subdural
SAH
Hemorrhagic
- ischemic stroke sites different from intraparenchymal bleeding. Most common ischemic is MCA
- putamen stroke affects IC, thalamus, FEF
Charcot-Bouchard
Cerebral Amyloid Angiopathy
IVH
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