Download Epidural/Subdural Hematoma*s - 1B

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Brian Kelleher
Epidural Hematoma
Subdural Hematoma
An extradural hemorrhage is
bleeding between the inside
of the skull and the outer
covering of the brain (called
the "dura").
A subdural hematoma is a
collection of blood between
the dura and the surface of
the brain.
Epidural Hematoma
An extradural hemorrhage
occurs when there is a
rupture of a blood vessel,
usually an artery, which then
bleeds into the space
between the "dura mater" and
the skull. The affected vessels
are often torn by skull
fractures.
Subdural Hematoma
Areas affected by subdural
hematomas are the brain
because of the severe
swelling inside the dura.
Epidural Hematoma
Subdural Hematoma
This is most often the result of
a severe head injury, such as
those caused by motorcycle or
automobile accidents.
Extradural hemorrhages can
be caused by venous (from a
vein) bleeding in young
children.
With any subdural hematoma,
tiny veins between the surface
of the brain and its outer
covering (the dura) stretch
and tear, allowing blood to
collect. They can also occur
spontaneously.
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Emergency surgery may be needed to reduce pressure
within the brain. This may involve drilling a small hole in the
skull, which allows blood to drain and relieves pressure on
the brain. Large hematomas or solid blood clots may need
to be removed through a procedure called a craniotomy,
which creates a larger opening in the skull.
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Recovery from hematomas depends on the severity of the
injury. If it’s stopped before too much pressure builds up in
the brain then recovery is usually about 6 months. Mortality
rates of subdural hematomas are about 60%, and 15-20%
for epidural hematomas.