19 CNS Aneurysm

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