Neurology Flashcards
What score on ABCD2 requires specialist review within 24 hours
All TIAs should have review within 24 hours
What % stenosis would require endarterectomy in a symptomatic patient
> 50%
Which artery is involved in the majority of carotid dissections
Internal carotid artery
Which condition causes ipsilateral headache, ipsilateral horner’s and contralateral hemisphere signs
Carotid artery dissection
When should decompressive hemicraniectomy be considered in acute ischaemic stroke
<60yrs with large cerebral infarctions in the MCA
What condition is strongly associated with lacunar strokes
Hypertension
What are the common sites of lacunar stroke
Basal ganglia, thalamus, internal capsule
Infarct of which artery would lead to contralateral hemiparesis and sensory loss in the lower extremities more than the upper extremities?
Anterior cerebral artery
Infarct of which artery would lead to contralateral homonymous hemianopia with macular sparing and pure hemisensory loss
Posterior cerebral artery
Infarct of which artery would lead to ipsilateral CNIII palsy and contralateral weakness
PCA branches to the midbrain (Weber’s syndrome)
What does lateral medullary syndrome (posterior inferior CA/Wallenberg’s syndrome) cause?
Ipsilateral cerebellar signs, ipsilateral Horner’s syndrome, contralateral spinothalamic sensory loss
Infarct of which artery causes similar symptoms of lateral medullary syndrome but with facial paralysis and deafness?
Anterior inferior cerebral artery (lateral pontine syndrome)
What signs are associated with infarction of the pontine artery
6th nerve palsy, 7th nerve palsy, contralateral hemiparesis
Which condition is syringomyelia strongly associated with
Arnold-Chiari Malformation
What condition causes wasting and weakness of the arms, spinothalamic sensory loss and loss of reflexes
Syringomyelia
What is the treatment of transverse myelitis
IV corticosteroids
Which condition is associated with neurological symptoms most prominent when a patient has their arm above their head?
Subclavian steal syndrome
Which deficiency causes degeneration of the posterior and lateral columns of the spinal cord?
Vitamin B12 (subacute combined degeneration of spinal cord)
Lesions in which lobe cause Broca’s aphasia
Frontal lobe
Lesions in which lobe lead to changes in personality and inability to generate a list rapidly
Frontal lobe
What visual change is seen in a lesion of the parietal lobe
Inferior homonymous quadrantanopia
What syndrome is caused by a lesion of the dominant parietal lobe
Gerstmann’s syndrome (can’t read, write, add up, left-right dissociation)
Wernickes aphasia and superior homonymous quadrantanopia - where is the lesion?
Temporal lobe
Which part of the cerebellum is affected to cause gait disturbance
Midline
Which part of the cerebellum is affected to cause intention tremor and dysdiadokinesia
Hemisphere
What location of lesion causes incongruous defects in vision
Lesion of the optic tract
What kind of pathology is most likely to cause upper quadrant bitemporal hemianopia
Pituitary tumour
What visual defect will superior compression of the optic chiasm by a craniopharyngioma cause?
Lower quadrant bitemporal hemianopia
Which disease is most associated with downbeat nystagmus
Arnold-chiari malformation
What pupil defect does Argyll-Robertson cause
Miosis (constriction)
Where is the lesion causing Horner’s syndrome if there is only anhydrosis of the face?
Pre-ganglionic lesions (pancoast’s tumour, trauma, thyroidectomy, top rib)
What causes a painful third nerve palsy
Posterior communicating artery aneurysm
What are the causes of a unilateral lower motor neurone palsy of the facial nerve
Bell’s palsy, Ramsay hunt, acoustic neuromas, parotid tumours, MS, HIV, diabetes
Which lesion causes a facial nerve palsy and convergent squint?
Pons lesion
Which genes are implemented in Parkinson’s disease
Parkin gene, UCHL1
Which category of medication cause impulse control disorders
Dopamine receptor antagonists (ropinirole, pramiprexole, rotigotine)
Which disease presents with Parkinsonism, impairment of vertical gaze and cognitive impairment
Progressive supranuclear palsy
Which condition presents with Parkinsonism, cerebellar signs and autonomic disturbance
Multiple system atrophy
What are neurofibrillary tangles made up of in Alzheimer’s disease
Tau protein
Which drug is given in severe Alzheimer’s and what is its mechanism of action
Memantine- NMDA antagonist
What does pulvinar sign on MRI brain suggest
Variant CJD
What does CJD present with
Dementia, ataxia, myoclonic jerks
Where does herpes simplex encephalitis affect in the brain
Temporal lobes
What condition causes medial temporal petechial haemorrhages on MRI brain
Herpes simplex encephalitis
Which virus causes widespread demyelination in HIV patients/immunosuppressed leading to progressive multifocal leukoencephalopathy (PML)
JC virus
What does toxoplasmosis infection show on imaging of the brain
Ring enhancing lesions
What does CNS lymphoma show on brain imaging
Homogenous enhancement, SPECT positive
Which artery is commonly involved in extradural haematomas
Middle meningeal artery
What drug can be used to treat vasospasm in SAH
Nimodipine
Which receptors are involved in myaesthenia gravis
Post-synaptic Ach receptors
Which receptors are involved in Lambert-Eton Myaesthenic Syndrome
Pre-synaptic voltage-gated calcium channels
What is first line treatment of absence seizures
Ethosuximide or sodium valproate
What is first line treatment of partial seizures
Lamotrigine
What is the MOA of sodium valproate
Increases GABA activity
Which condition causes infantile spasm and hypsarrhythmia on EEG
West Syndrome
Which chromosome is responsible for lisch nodules and axillary freckles
Chr 17 - NF1
Which chromosome is responsible for bilateral acoustic neuromas
Chr 22
Which chromosomes are responsible for ash-leaf spots and shagreen patches
Chr 9 & 16 (tuberous sclerosis)
What is the MOA of topiramate
5-HT antagonist
Which medication can be used in the prophylaxis of cluster headaches
Verapamil
What condition is absent corneal reflex associated with
Facial nerve lesion, V1 branch lesion, pons/medulla lesion:
- Acoustic neuroma, vestibular schwannoma
- subarachnoid haemorrhage, venous thrombosis
Which condition causes headaches and nuchal rigidity in a post-partum lady
Cortical vein thrombosis
How long must you take off driving after a first seizure
6 months
How long must you take off driving for a TIA or stroke
1 month
How long must you take off driving for an unexplained episode of syncope
6 months
What is the treatment of Ramsay-Hunt syndrome
Oral aciclovir and prednisone
What is the treatment of CMV
Ganciclovir
Which drugs may exacerbate a myaesthenic crisis
Penicillamine, procainamide, beta-blockers, lithium, phenytoin, gentamicin
Which type of MND has the worst prognosis
progressive bulbar palsy
Which treatment increases survival the most in MND
NIV
What is the inheritance pattern of myotonic dystrophy
autosomal dominant trinucleotide repeat
Which condition presents with slow-relaxing grip, bilateral ptosis and loss of red-light reflex
myotonic dystrophy
What is the pathophysiology behind chorea
damage to caudate nucleus in basal ganglia
What drug can be used to treat chorea in Huntington’s
tetrabenazine
What condition causes involuntary movements on the opposite side to a lesion of the subthalamic nucleus
hemiballism
What chromosome is the VHL gene located on
chromosome 3
What is the inheritance pattern of Freidrich’s ataxia
autosomal recessive trinucleotide repeat
What is the most common cause of death in Freidrich’s ataxia
HOCM
What is Lhermitte’s syndrome in MS
paraesthesia of limbs with neck flexion
What are the contraindications of beta-interferon in MS treatment
depression, epilepsy, liver failure, <18 yrs, walk <100m, <2 relapses in last year
What is the MOA of natalizumab in treatment of MS
inhibits migration of leukocytes across BBB
Which antibodies are present in 25% of Guillian Barre patients
Anti-GM1 Abs
Which syndrome presents with opthalmoplegia, ataxia and anti-GQ1b Abs
Miller Fisher Syndrome
which nerve causes burning thigh pain when compressed
lateral cutaneous nerve
what is first line treatment of diabetic neuropathy
duloxetine, pregabalin, gabapentin, amitriptyline
What do nerve conduction studies show in Charcot-Marie-Tooth Disease
nerve conduction velocity <30m/s
What do NCS show in axonal pathology
normal velocity, reduced amplitude
Which drugs cause peripheral neuropathy
nitrofurantoin, metronidazole, amiodarone, isoniazid, vincristine, TCAs
What antibody causes painful sensory neuropathy in SCLC and neuroblastoma
Anti-Hu
Which antibody causes cerebellar syndrome in ovarian and breast cancer
Anti-Yo
Which antibody causes stiff person’s syndrome in colorectal cancer
Anti-GAD
What is shown on muscle biopsy in mitochondrial disease
red, ragged fibres
Which causes of peripheral neuropathy are predominantly motor loss
GBS, porphyria, lead poisoning, Charcot-Marie-Tooth, CIDP, diptheria
Which causes of peripheral neuropathy are predominantly sensory loss
diabetes, uraemia, leprosy, alcoholism, B12, amyloidosis
which haematomas are limited by the suture lines
extradural haematomas
how will a chronic haematoma appear on CT
hypodense
which lesion site causes upward gaze palsy and pseudo-argyll robertson pupils
dorsal midbrain (Parinaud syndrome)
What shows poly-spike and wave discharge on EEG
myoclonic seizures
When should thrombectomy be offered together with thrombolysis in stroke
- Functional score < 3 on Rankin scale, > 5 on NIHSS
- Proximal anterior circulation occlusion within 6hrs of onset
What is first line treatment for spasticity in MS
Baclofen, gabapentin
Which AED is contraindicated in absence seizures
Carbamazepine
What is the MOA of baclofen
GABA agonist
What is the treatment of a brain abscess
IV 3rd-generation cephalosporin + metronidazole
What class of parkinson’s drug is selegiline
MAO-B inhibitor
What are the causes of spastic paraparesis (UMN weakness in lower limbs)
MS, SCC, parasagittal meningioma, transverse myelitis (HIV), syringomyelia, OA of cervical spine
Which part of the hypothalamus that controls satiety is often invaded by craniopharyngiomas in children
The ventromedial area of the hypothalamus
Which scale is best to measure disability in ADLs after a stroke
Barthel index
Where does wernicke’s area reside
Brodmann area 22 in superior temporal gyrus
Which neuropeptide is narcolepsy associated with
Orexin (hypocretin)
A lesion of which area in the brain leads to inability to read but no inability to write
Corpus callosum - infarct of left posterior cerebral artery
Where are lesions located that cause congruous visual field defects
Optic radiation lesion or occipital cortex
Which drugs can cause idiopathic intracranial hypertension
COCP, steroids, Tetracyclines, Vitamin A, Lithium
What are the causes of absent ankle jerks
B12 deficiency, SLE, syphilis, cerebrotendinous xanthomatosis
Which condition has high serum cholestanol
Cerebrotendinous xanthomatosis
Which conditions produce both extensor planters and absent ankle jerks
UMN + LMN - SCD of spinal cord, MND, Freidich’s ataxia, syringomyelia, syphilis
Which chromosomes are involved in neurofibromatosis
NF1 = Chr 17; NF2 = Chr 22
Which chromosomes are involved in tuberous sclerosis
9 & 16
What is a Jacksonian March
A focal aware seizure that starts by affecting a peripheral body part and then spreads quickly - can have secondary generalisation
What is anisocoria
Unequal pupil size
Which nerve root is associated with Erb’s palsy
C5 (waiter’s tup position)
Which nerve roots are damaged resulting in wasting of intrinsic hand muscles and flexion deformities of PIP and DIP joints
C8-T1 (Klumpke’s paralysis)
Which trinucleotide repeat is seen in Huntington’s disease
CAG
Which trinucleotide repeat is seen in Friedrich Ataxia
GAA
Which trinucleotide repeat is seen in Myotonic Dystrophy
CTG
Which seizure type is typically seen in teenagers after sleep deprivation
Juvenile myoclonic epilepsy
Which lesion causes weakness of foot dorsiflexion and foot eversion
Common peroneal nerve
What medication can be used to treat neuroleptic malignant syndrome
Bromocriptine
Which condition is associated with Anti-NMDA receptor encephalitis
Ovarian teratoma
Which treatment is commonly used to treat tremor in drug-induced parkinsonism
Benzhexol
What cholesterol level should a patient be started on a statin after a stroke
All patients should have high dose statin after stroke/TIA
Occlusion of which circulation is an indication for thrombectomy
Proximal anterior circulation if within 6hrs or 24hrs and viable brain tissue
(Posterior cerebral/basilar can be considered for thrombectomy within 24hrs if viable brain tissue)
Which type of dysphasia describes fluent speech but poor repetition
Conductive dysphasia (affects arcuate fasciculus)
What is the clinical presentation of syringomyelia in the upper limbs
Cape-like loss of sensation to temperature (preservation of light touch, proprioception and vibration)
Which area of the brain do wernike and korsakoff syndrome affect
Medial thalamus and mammillary bodies of the hypothalamus
What is first line treatment for myoclonic seizures
Sodium valproate
Which seizure types can carbamazepine exacerbate
Absence and myoclonic seizures
What do temporal lesions causes
Wernicke’s aphasia, superior homonymous hemianopia, auditory agnosia, prosopagnosia (difficulty recognising faces)
What do frontal lobe lesions cause
Broca’s aphasia, disinhibition, perseveration, anosmia, inability to generate a list
What type of aphasia is characterised by normal comprehension, fluent speech but poor repetition and aware of their errors
Conduction aphasia
Which aphasia is characterised by word finding difficulties
Anomic aphasia
What is the most common complication following meningitis
Sensorineural hearing loss
Which drugs are first-line for spasticity in multiple sclerosis
Baclofen, gabapentin
What is the first investigation that should be performed in a patient with MS who has bladder dysfunction
US bladder (post-micturition to assess emptying)
Which upper limb condition causes pain in the hand that is relieved by shaking the hand
Carpal tunnel syndrome
What is seen on examination in carpal tunnel syndrome
Weakness of thumb abduction, wasting of thenar eminence, positive Tinel’s and Phalen’s sign
What is second line treatment of myoclonic seizures after valproate
Clonazepam, lamotrigine
Which two anti-epileptics can be used as first line for focal seizures
Carbamazepine, lamotrigine
Which Parkinson’s plus syndrome typically has cerebellar signs
Multiple system atrophy
What should pregnant women taking phenytoin be given in the last month of pregnancy
Vitamin K
What is the genetic mutation seen in CADASIL
NOTCH3 mutation on Chr 19
Which is more severe - Becker’s or Duchenne’s
Duchenne’s (frameshift deletion)
Which condition resembles marfan’s but with mild learning disability, downwards lens dislocation and livedo reticularis
Homocystinuria
Which condition occurs days to weeks after cerebral hypoxia and is characterised by intention myoclonus
Lance-Adam’s syndrome
What are the risk factors associated with vertebral artery dissection
Spinal manipulation, yoga, ceiling painting, judo, nose blowing, minor neck trauma, fibromuscular dysplasia, chronic headache, female
Which condition presents with severe occipital headache, neck pain, brainstem and cerebellar signs after head/neck injury
Vertebral artery dissection
Which condition characteristically causes painless muscle weakness of the finger flexors and quadriceps with modest CK rise
Inclusion body myosotis
What presents with severe shoulder pain that resolves, followed by progressive upper limb weakness and wasting
Brachial neuritis
What is the management of paroxysmal hemicrania
Indomethacin
Infarction of which artery is responsible for locked-in syndrome
Basilar artery
Which condition is characterised by proximal weakness during the second half of the night, following a day of unusually strenuous exercise
Thyrotoxicosis with hypokalaemic periodic paralysis
What is the most appropriate initial investigation for CJD
EEG
What is the most common tumour of the middle ear
Glomus jugulare tumour
What does meralgia paraesthetica occur due to
Entrapment of the lateral cutaneous nerve of the thigh
What triad of symptoms is associated with wernicke korsakoff syndrome
Ataxia, eye movement abnormalities and impaired cognition
What is Anton syndrome
Bilateral infarctions of the primary visual cortex (occipital lobes) where patients believe they can see what they cannot
Which organism is most likely to cause meningitis from a CSF leak
Gram positive cocci (staph aureus/epidermidis)
What is the investigation of choice for vertebral artery dissection
Magnetic resonance angiography
Which disease causing meningitis with flaccid paralysis has had an outbreak in New York
West Nile disease
What non invasive test is best to diagnose McArdle syndrome
Serum lactate after exercise (will not be raised)
What is characteristic on LP in GBS
Raised protein and normal WCC
What is Refsum’s disease
Ataxia, hearing loss, retinitis pigmentosa and dry red skin
What is the main differential to consider in patients with suspected MND
Multifocal motor neuropathy with conduction block (anti-GM1 Abs)
What type of enhancement does cryptococcus meningitis display on MRI
Leptomeningeal enhancement
What type of enhancement is seen with CMV meningoencephalitis on MRI
Ependymal enhancement
What is an early sign of idiopathic Parkinson’s
REM sleep disorder
What feature is often present in LEMS but not MG
Autonomic dysfunction
What does a paraganglioma of the inner ear present with
Pulsatile tinnitus + X, XI and XII nerve palsies
What is the most rapid diagnostic test in Wilson’s after serum copper and caeruloplasmin
Slit lamp test (KF rings)
What is the treatment of spontaneous carotid artery dissection in patients with low bleeding risk
DAPT
What is the strongest risk factor for haemorrhagic transformation of ischaemic stroke
NIHSS >15
Which condition develops an ‘alien limb’ phenomenon along with rigidity and bradykinesia
Corticobasal degeneration
What is the most common form of idiopathic generalised epilepsy in young adults
Juvenile myoclonic epilepsy
Which metabolic abnormality can be 3x the upper limit of normal 10-20 mins after a tonic clonic seizure
Hyperprolactinaemia
What is the typical management of high grade glioma
Surgical resection with adjuvant post-op RT+chemo
What is the treatment of BPPV
Epley manoeuvre
Which condition causes ICH and seizures in patients under 40
AV malformation
What is the gold standard test for AV malformation
MRI head and angiography
Which infectious disease can cause a false positive tensilon test
Botulism
What is seen on CT head in PML
Hypodense periventricular lesions
Which side has the extensor plantar reflex in Brown-Sequard syndrome
Ipsilateral
Which brain lesion can cause a dilated fourth ventricle and hydrocephalus
Cerebellar
In 40% of patients negative for ACh receptor Abs, which Ab is positive in MG
Muscle-specific kinase (MuSK) Abs
What are the main features of cerebral venous sinus thrombosis
Headache, seizures, focal weakness, papilloedema
What is the most appropriate initial investigation for sporadic CJD
MRI brain
What are visual evoked potentials used to assess
Optic neuropathy
What is the most common cause of tongue deviation
Unilateral hypoglossal nerve palsy - malignancy
Which condition is associated with an absent delta sign on CT head
Venous sinus thrombosis
Which nerve root lesions give rise to pre-ganglionic Horner’s syndrome
C8, T1
Which part of the brachial plexus does radiation plexopathy usually affect
Upper brachial plexus
What do nerve conduction studies show in MND
Normal studies - used to rule out other treatable conditions e.g. multifocal motor neuropathy
What is first line testing for myasthenia gravis
Anti-Ach receptor antibodies
What is the treatment of restless leg syndrome
Gabapentin or dopamine agonist (e.g. pramiprexole, ropinirole)
Which type of focal epilepsy has localising features of lip smacking and deja vu
Temporal
What are the features of focal frontal epilepsy
Motor - head/leg movements, posturing, marching
What 4 groups of symptoms are classically seen in sporadic CJD
- myoclonus
- dementia
- ataxia
- psychiatric/behavioural changes
What is the best initial test to diagnose MG
Serum Ach receptor Abs
What is the BP target in ICH
140 mmHg
What blood pressure must be achieved in ischaemic stroke before thrombolysis can be given
< 185/110
Which is the only cranial nerve to have contralateral control
CN IV (trochlear) - exits midbrain dorsally then travels ventrally (longest CN in body)