Neuro Flashcards

1
Q

difference between ischaemia and infraction

A

ischaemia= reduced tissue supply
infarction= death of tissue due to reduced blood supply

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2
Q

what tool is use to identify stroke in an acute medical setting

A

ROSIER

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3
Q

how are TIAs mx

A

start 300mg aspirin daily

refer to a specialist TIA clinic within 24 hrs (within 7 days if it was more than 7 days ago)

diffusion weighted MRI scan to image

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4
Q

how are TIAs imaged

A

diffusion weighted MRI scans

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5
Q

how is aspirin given in suspected stroke

A

300 mg daily for 2 weeks

start after haemorrhage excluded by CT

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6
Q

how is blood pressure managed in a stroke

A

blood pressure is not lowered in ischaemic stroke

blood pressure is agressively lowered in haemorrhagic stroke

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7
Q

alteplase moa

A

tissue plasminogen activator

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8
Q

in what time frame of presentation is thrombectomy done for stroke

A

within 4.5 hrs

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9
Q

when is thrombectomy indicated in stroke

A

complete block of the posterior or anterior circulation

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10
Q

what 2 conditions are screened for when someone has a IA or stroke

A

carotid artery stenosis
AF

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11
Q

secondary prevention of stroke

A

ABCD
atorvastatin 20-80mg
blood pressure control
clopidogrel 75mg daily
diabetes control

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12
Q

what dose of statin is given in secondary prevention of stroke and when

A

20-80mg atorvastatin
not immediately delay by 48 hrs

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13
Q

what is given for secondary preventation of stroke/TIA when clopidogrel cant be given

A

aspirin plus dipyrimadole

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14
Q

blood vessel implicated in extradural haemorrhage

A

middle meningeal artery

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15
Q

blood vessels implicated in subdural haemorrhage

A

bridging veins

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16
Q

when is CT reliable for imaging in an SAH

A

first 6 hrs
after this its less reliable

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17
Q

how many hrs after CT head should lumbar puncture be done in SAH

A

after 12 hrs (to allow for build up of bilirubin)

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18
Q

what medication is given after SAH to prevent vasospasm

A

nimodipine

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19
Q

what part of the nervous system does multiple sclerosis affect

A

central
specifically oligodendrocytes

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20
Q

symptoms of optic neuritis

A

unilateral loss of vision
enlarged blind spot (central scotoma)
opthalmoplegia
red desaturation (impaired colour vision)
relative afferent pupillary defect

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21
Q

what is RAPD

A

when the pupillary light reflex is reduced when shining a light into the affected eye, but the consensual reflex in the affected when shining a light into the normal eye is normal

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22
Q

causes of optic neuritis

A

MS
sarcoidosis
SLE
measles/mumps
lyme disease
syphilis

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23
Q

optic neuritis mx

A

high dose steroids

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24
Q

what is intranuclear opthalmoplegia

A

a lesion in the medial longitudinal fasciculus (connects the cranial nerve nuclei that control eye movements)

there is impaired adduction in the affected eye and nystagmus in the contralateral eye

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25
Q

what eye movement abnormality is seen in intranuclear opthalmoplegia

A

inability to adduct the affected eye and nystagmus on abduction in the other eye

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26
Q

lhermittes sign

A

electric shock like pain down the spine when flexing the neck- occurs due to demyelination in the spine in MS

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27
Q

2 types of ataxia

A

sensory
cerebellar

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28
Q

what sign is positive in sensory ataxia

A

rombergs

29
Q

a lesion in what spinal column causes sensory ataxia

A

dorsal column

30
Q

lumbar puncture results in MS

A

may find oligoclonal bands

31
Q

what is progressive bulbar palsy

A

a type of motor neurone disease that primarily affects the muscles of talking and swallowing

32
Q

what medication can be given in MS to slow progression

A

riluzole

33
Q

what is affected in MND

A

upper and lower motor neurones

34
Q

triad of parkinsons disease

A

resting tremor
bradykinesia
rigidity

35
Q

tremor in parkinsons disease

A

unilateral
pill rolling
worse when distracted/nit using the hand

36
Q

what is rigidity

A

resistance to the passive movement of a joint

37
Q

how does alcohol affect a benign essential tremor

A

improves with alcohol

38
Q

what are the 4 parkinsons plus syndromes

A

multiple system atrophy
progressive supranuclear palsy
dementia with lewy bodies
corticobasal degeneration

39
Q

main side effect of levodopa

A

dyskinesia

this could be dystonia, athetosis or chorea

40
Q

what can be given with levodopa to reduce dyskinesia sx

A

amantadine

41
Q

what are COMT inhibitors

A

they reduce the metabolisation of levodopa

used in parkinsons

42
Q

prolonged use of dopamine agonists can cause

A

pulmonary fibrosis

43
Q

monoamine oxidase b inhibitors moa

A

reduce the breakdown of dopamine, serotonin adrenaline

used in parkinsons

44
Q

dopamine agonist examples

A

bromocriptine
cabergoline

45
Q

COMT inhibitors example

A

entacapone

46
Q

monoamine oxidase b inhibitors

A

selegiline
rasagiline

47
Q

medications for benign essential tremor

A

propanolol

48
Q

describe a benign essential tremor

A

a bilateral symmetrical tremor
worse on intentional movement
better with alcohol
worse with caffeine, stress, tired
not present when asleep

49
Q

differentials for tremor

A

benign essential tremor
parkinsons
MS
hyperthyroidism
huntingtons chorea
antipsychotics

50
Q

are patients awake and aware in focal seizures

A

awake yes
aware if simple, not aware if complex

51
Q

describe a tonic clonic seizure

A

period of muscle tensing followed by a period of muscle jerking

52
Q

describe a myoclonic seizure

A

sudden brief muscle contractions, patients are awake

53
Q

describe a tonic seizure

A

sudden onset increased muscle tone, may result in a fall

54
Q

describe an atonic seizure

A

sudden loss in muscle tone, often results in a fall

55
Q

what are infantile spasms also known as

A

west syndrome

56
Q

what is found on EEG in infantile spasm

A

hypsarrhythmia

57
Q

seizure medications for men/ non child bearing women

A

sodium valproate first line apart from

lamotrigine/ levitiracetam for focal seizure

ethosuximide for absence seizure

58
Q

seizure medications for women

A

lamotrigine first line apart from

levitiracetam for myoclonic seizure

ethosuximide for absence seizure

59
Q

sodium valproate moa

A

increases GABA

60
Q

benzo options and dosing for status

A

rectal diazepam (10mg)
buccal midazolam (10mg)
IV lorazepam (4mg)

61
Q

status mx

A

2 x benzo
1 x IV infusion (phenytoin/kepra/sodium valp)
GA or phenobarbitol

62
Q

definition of status

A

seizure lasting over 5 mins

multiple seizures without regaining consciousness

63
Q

examples of weak opioids

A

codeine
tramadol

64
Q

examples of strong opioids

A

morphine
oxycodone
fentanyl
buprenorphrine

65
Q

what can be given for chronic primary pain

A

antidepressants

avoid the use of paracetamol, NSAIDs, opiates, anti epileptics

66
Q

treatments for neuropathic pain and how they are given

A

amitriptyline
gabapentin
duloxetine
pregabalin

only use them as monotherapy

67
Q

how do vessels over the optic disc look in papilloedema

A

they will be curved as they are travelling over a raised surface- usually they are flat as they are travelling over a flat surface

68
Q

bilateral acoustic neuromas are associated with

A

neurofibromatosis type 2

69
Q
A