Lecture 22

Question 1

Brain

Answer 1

Accounts for 1-2% of body weight
Receives 15% resting cardiac output
Accounts for 20% blood oxygen consumption

Question 2

TIA

Answer 2

1/10 chance of having a full stoke within 4 weeks if untreated

Question 3

Left MCA tertiary infarct

Answer 3

Damage to speech area in L hemisphere -> loss of speech
Damage to L visual pathway -> Loss of vision to R (hemianopia)
Damage to L motor cortex and internal capsule -> weakness of R face, arm & leg

Question 4

Subarachnoid haemorrhage

Answer 4

‘Thunderclap headache’

Spontaneous

Question 5

Subdural haemorrhage

Answer 5

Often on anticoagulants

Question 6

Extradural haemorrhage

Answer 6

Post head injury
Slowly falling conscious level possibly with lucid period
Often with fractured temporal lobe
Typically the middle meningeal artery

Question 7

Alzheimers disease

Answer 7

Due to an accumulation of AB amyloid, tau-neurofibrillary tangles and plaques.

Question 8

Pakinsons

Answer 8

Depigmentation of substantia nigra

Loss of neuromelanin