20/1

Question 1

Name the layers of the skull from outer to inner most in relation to brain herniation

Answer 1

Skull
Dura mater
Sinus
Dura mater
Arachnoid mater
Subarachnoid space (contains CSF and circle of Willis)
Pia mater

Question 2

What type of haematoma is assocaited with a LOC, followed by recovery ‘lucid interval’ and rapid progress of neurological symptoms?

What does it look like on CT?

Answer 2

Extradural (between the skull and the dura)

Lens shape and doesn’t cross suture lines

Question 3

What factors indicate the urgent need for head CT scan

Answer 3

• anticoagulants
• GCS <13 initally in ED
• GCS <15 2hrs after injury
• focal neurological deficit
• > 1 episode of vomiting
• rest self explanatory

Question 4

What is the dose of adrenaline for cardiac arrest vs anaphalyxis?

Answer 4

Cardiac arrest = 1 in 10,000
Anaplyxis = 1 in 1000