19 CNS Aneurysm

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Overview

• saccular: outgrowth like a sac from vessel wall, causes subarachnoid hemorrhage
• lacunar stroke: obstruction of small vessels, rupture = charcot

Rupture

• xanthochromia: yellow discoloration of CSF
• no focal deficits: bleeding not in lobes of brain (no weakness, sensory, motor problems)

Berry Aneurysm

• Acomm most common
• Pcomm second most common

AComm

• if very large and unruptured can cause symptoms

PComm

• if aneurysm, it will compress constrictors and dilate the pupil

Charcot Bouchard

• ICH: intracerebral hemorrhage