Haematomas

Question 1

Layers of the head from skull to brain and what is found in each layer?

Answer 1

Skull
(Middle meningeal artery) - endosteal layer
(Dural venous sinus) - meningeal layer
DURA
(BVs)
ARACHNOID
(Circle of Willis)
PIA
BRAIN

Question 2

What 3 haemorrhages can occur?

Answer 2

Subarachnoid
Subdural
Extradural

Question 3

Why do Subarachnoid haemorrhages occur?
What shape do they make?

Answer 3

Berry aneurysm circle of Willis rupture
Star shape

Question 4

Why do Subdural haemorrhages occur?
What shape do they make?

Answer 4

Bridging vein rupture
Banana shape

Question 5

Why do Extradural haemorrhages occur?
What shape do they make?

Answer 5

Middle meningeal artery - trauma
Lens shape

Question 6

Subarachnoid haemorrhage
Why do they occur? Cause?

Answer 6

Berry aneurysm circle of willis rupture (or due to trauma)

Question 7

Subarachnoid haemorrhage
Where is the berry aneuryms/rupture most common?

Answer 7

Anterior communicating / ACA junction

Question 8

Subarachnoid haemorrhage
RF ?

Answer 8

Conn tissue disorders (M/ED)
htn
PKD
TRAUMA
increased age and Fhx

Question 9

Subarachnoid haemorrhage
Sx?

Answer 9

Occipital thunderclap headache
Suddenly onset
May have ‘sentinel headache’ preceding this (precedes berry aneurysm rupture for weeks in 50% cases, throbbing occipital pain)
Worst headache of life
0 –> 10 severity instantly