4. Saccular
⢠rounded berrylike
outpouchings that arise
from arterial bifurcation
points, most commonly
in the circle of Willis.
⢠dilatations of a vascular
lumen caused by
weakness of all vessel
wall layers
5. ⢠AN ELONGATED SPINDLE-SHAPED DILATION OF AN
ARTERY
⢠roughly cylindrical and affects the entire circumference of
the
7. LOCATION
⢠A common location of cerebral aneurysms is on
the arteries at the base of the brain, known as
the Circle of Willis.
⢠Approximately 85% of cerebral aneurysms
develop in the anterior part of the Circle of Willis,
8.
9. ⢠Weakness in blood vessel wall
⢠Atherosclerosis
⢠Hypertension
⢠Severe trauma
⢠Weakness in blood vessel wall.
⢠smoking
⢠Alcohol
10. ⢠NO EARLY SIGNS (some)
⢠Sudden headache
⢠Nausea and Vomiting
⢠Vision impairment
⢠Loss of Consciousness
⢠Nuchal rigidity
⢠Seizures
⢠Dysphagia
⢠Pupillary changes
18. ⢠Surgical Clipping
a V-shaped, silver clip to the neck of an internal
carotid artery aneurysm.
A small metal clip (usually made from titanium) is then
applied to the neck (base) of the aneurysm
19. ⢠Endovascular Coiling
Guglielmi detachable coils, known as GDCs,
are soft wire spirals originally made out of platinum
These coils are deployed (released) into an aneurysm via
a microcatheter that is inserted through the femoral artery
of the leg and carefully advanced into the brain.
20. ⢠The microcatheter is selectively advanced into the
aneurysm itself, and the microcoils are released in a
sequential manner
⢠Once the coils are released into the aneurysm, the blood
flow pattern within the aneurysm is altered, and the slow
or sluggish remaining blood flow leads to a thrombosis
(clot) of the aneurysm.
⢠thrombosed aneurysm resists the entry of liquid blood,
providing a seal in a manner similar to a clip.
Endovascular coiling is an attract