Neuro Flashcards
What microorganism most commonly causes Guillain-Barre?
Campylobacter jejuni
What is leading cause of death Guillain-Barre?
VTE (so need prophylaxis)
What is Charcot’s triad?(neuro)
Nystagmus, intention tremor and dysarthria (linked to MS)
What is Mc Donald criteria?
Two or more lesion demspeminated in time & space (MS)
What is first line in MND to slow progression?
Rituzole
What is the first line treatment for Trigeminal Neuralgia?
Carbamazepine
What is the acute management of cluster headaches?
Sumatriptan and high flow 100% O2
What is the prophylaxis for cluster headaches?
Verapamil (Ca channel blocker)
How will third nerve palsy present?
Ptosis, “down & out” pupil, dilated pupil with absent light reflex but intact consensual constriction
What is the secondary prevention after someone has had a stroke?
2-week high dose aspirin (300mg) then clopidogrel (75mg)
What is the second line of secondary prevention after someone has had a stroke?
Aspirin + modified release dipyramidole
What are the possible causes of cerebellar disease?
PASTRIES - posterior fossa tumour, alcohol, MS, trauma, rarer causes, inherited, epilepsy treatment and stroke
What tremor is seen in Parkinson’s?
Unilateral tremor that improves with voluntary movement
How do you manage IIH?
Prescribe acetazolamide and advise weight loss
What is the prophylactic treatment for migraines?
Propanolol (not in asthmatics) or Topiramate (not in women of childbearing age)
What causes an intention tremor?
Cerebellar dysfunction - MS or alcohol or stroke
What is the triad for normal pressure hydrocephalus?
Gait apraxia, incontinence and dementia
What is the triad of Horner’s syndrome?
Miosis, Ptosis and Anhydrosis
What are the causes of Horner’s syndrome?
Damage to sympathetic innervation eye - stroke or tumour eg pancoast
What is the first line treatment for focal seizures?
Lamotrigine or levetiracetam
What is the first line treatment for generalised seizures?
Lamotrigine (or sodium valproate but not in women)
What is the first line treatment for absence seizures?
Ethosuximide (or sodium valproate but not in women)
What blood test differentiates seizure from pseudo-seizures?
Prolactin is raised in true seizures
What is the first-line treatment for spasticity in MS?
Baclofen and gabapentin
What is the classic presentation of pituitary apoplexy?
Sudden onset headache, visual field defects and evidence of pituitary insufficiency (hypotension)
How does a PCA stroke present?
Contralateral homonymous hemianopia with macular sparing and visual agnosia, Oculomotor palsy & contralateral weakness of upper & lower limbs
How do subdural and epidural haemorrhages appear on CT?
Epidural - egg or concave
Subdural - sickle or crescent
What causes a subdural haemorrhage?
Damage to bridging veins between cortex & venous sinuses
What nerve root innervates the ankle reflex?
S1-S2
What nerve root innervates the knee reflex?
L3-L4
What nerve root innervates the biceps reflex?
C5-C6
What nerve root innervates the triceps reflex?
C7-C8
What are the key features of Wernicke’s encephalopathy?
Nystagmus, ophthalmoplegia, ataxia, confusion, peripheral sensory neuropathy
What are the key features of Korsakoff syndrome?
Confabulation antro/retrograde amnesia
What causes Ramsay-Hunt syndrome?
Herpes zoster virus
What is the treatment for Ramsay-Hunt syndrome?
Aciclovir & prednisolone
What are the features of Ramsay-Hunt syndrome?
Facial nerve palsy, auricular pain, vesicular rash around ear, tinnitus and vertigo
What causes Charcot Marie Tooth syndrome?
(Most common) Inherited peripheral neuropathy
What are the features of Charcot Marie Tooth syndrome?
Foot drop, hammer toes, stork leg deformity, high arch feet, distal muscle weakness & atrophy, repeated ankle sprains
What are the features of Shy-Drager (type of multiple system atrophy)?
Parkinsonism, autonomic disturbance (eg hypotension, erectile dysfunction) and cerebellar signs
What are the features of Bengin paroxysmal positional vertigo?
Vertigo by head movement, nausea, lasts 10-20 seconds
How do you test for Bengin paroxysmal positional vertigo?
Hallpike maneuver - patient experiences vertigo and/or rotatory nystagmus
How do you treat Bengin paroxysmal positional vertigo?
Epley manoeuvre
How do you treat normal pressure hydrocephalus?
Ventriculoperitoneal shunt