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Elderly, Neuro & MSK > Neurology > Flashcards

Neurology Flashcards

1
Q

UMN vs LMN lesions

A

UMN: muscle bulk preserved, hypertonia, slightly reduced/normal power, hyperreflexia.

LMN: reduced muscle bulk with fasciculations, hypotonia, reduced power and hyporeflexia.

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2
Q

Describe the different types of gait

A
  • Hemiplegic/diplegic gait: indicates an upper motor neurone lesion.
  • Broad based gait/ataxic gait: indicates a cerebellar lesion.
  • High stepping gait: indicates foot drop or a lower motor neurone lesion.
  • Waddling gait: indicates pelvic muscle weakness due to myopathy.
  • Antalgic gait (limp): indicates localised pain.
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3
Q

List the causes of intracranial haemorrhage

A
  • Spontaneous
  • Secondary to ischaemic stroke, tumours, or aneurysm rupture.
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4
Q

Give examples of types of intracerebral haemorrhage

A
  • Lobar intracerebral haemorrhage
  • Deep intracerebral haemorrhage
  • Intraventricular haemorrhage
  • Basal ganglia haemorrhage
  • Cerebellar haemorrhage
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5
Q

Describe the components of the GCS

A

MOTOR RESPONSE:
6. Obeys commands
5. Localises to pain
4. Withdraws from pain
3. Abnormal flexion to pain (decorticate posture)
2. Extending to pain
1. None

VERBAL RESPONSE:
5. Orientated
4. Confused
3. Words
2. Sounds
1. None

EYE OPENING:
4. Spontaneous
3. To speech
2. To pain
1. None

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6
Q

Management of myasthenic crisis?

A

IV immunoglobulins and plasmapheresis

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7
Q

What is the first line drug for ocular myasthenia gravis?

A

Pyridostigmine

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8
Q

Raised ICP can cause which type of CN palsy?

A

3rd nerve palsy due to herniation

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9
Q

Describe the symptoms of raised ICP

A

Headaches, nausea, tinnitus and eye issues.

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10
Q

Idiopathic intracranial hypertension can lead to…

A

Raised ICP

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11
Q

Describe the features of third nerve palsy

A
  • Eye is deviated ‘down and out’.
  • Ptosis.
  • Pupil may be dilated (sometimes called a ‘surgical’ third nerve palsy).
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12
Q

Outline the causes of a third nerve palsy

A
  • Diabetes.
  • Vasculitis e.g. temporal arteritis, SLE.
  • False localizing sign due to uncal herniation through tentorium if raised ICP.
  • Posterior communicating artery aneurysm: pupil dilated and often associated pain.
  • Cavernous sinus thrombosis.
  • Weber’s syndrome: ipsilateral third nerve palsy with contralateral hemiplegia - caused by midbrain strokes.
  • Other: amyloid, multiple sclerosis.
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13
Q

Management of TIA presenting to GP within 7 days?

A
  • 300mg aspirin daily.
  • Refer for specialist review within 24 hours.
  • Diffusion-weighted MRI scan.
  • Urgent carotid doppler.
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14
Q

Define TIA

A

Transient ischaemic attack - transient episode of neurologic dysfunction caused by focal brain, spinal cord, or retinal ischaemia, without acute infarction.

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15
Q

Outline the features and causes of cerebellar pathology

A

DANISH - dysdiadochokinesia, ataxia, nystagmus, intention tremor, slurred speech, hypotonia/hyporeflexia.

PASTRIES - paraneoplastic syndrome, abscess/atrophy, stroke/sclerosis, trauma/tumour, raised ICP, infection/inherited, ethanol, spinocerebellar ataxia.

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16
Q

Cerebellar hemisphere vs cerebellar vermis lesions

A
  • Cerebellar hemisphere lesions cause peripheral (‘finger-nose ataxia’).
  • Cerebellar vermis lesions cause gait ataxia.
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17
Q

A 59-year-old gentleman presents to the Emergency Department with a left sided hemiparesis which affects his lower limb more than his upper limb, with his face unaffected. He also has complete loss of both pain and light touch sensation in his left lower limb. He is able to clearly speak to you and understands what you say and does not have an ataxia, but he appears unable to see you when you stand on his left. Clinical examination of his visual fields reveals a left sided homonymous hemianopia.

Which clinical stroke syndrome does he have?

A

Partial anterior circulation infarct (PACI)

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18
Q

Progressive peripheral polyneuropathy with hyporeflexia suggests which condition?

A

Guillain-Barre syndrome

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19
Q

What is the most common cause of Guillain-Barre syndrome?

A

Campylobacter jejuni

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20
Q

Define syringomyelia

A

Collection of cerebrospinal fluid within the spinal cord.

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21
Q

Describe the features of syringomyelia

A
  • ‘Cape-like’ (neck, shoulders and arms) loss of pain and temperature sensation but the preservation of light touch, proprioception and vibration - due to the crossing spinothalamic tracts in the anterior commissure of the spinal cord being the first tracts to be affected.
  • Spastic weakness (predominantly of the lower limbs).
  • Neuropathic pain.
  • Upgoing plantars.
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22
Q

Describe two causes of bitemporal hemianopia

A
  • Upper quadrant defect = pituitary tumour
  • Lower quadrant defect = craniopharyngioma
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23
Q

What are the red flags for trigeminal neuralgia?

A
  • Sensory changes
  • Deafness or other ear problems
  • History of skin or oral lesions that could spread perineurally
  • Pain only in the ophthalmic division of the trigeminal nerve (eye socket, forehead, and nose), or bilaterally
  • Optic neuritis
  • A family history of multiple sclerosis
  • Age of onset before 40 years
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24
Q

Define normal pressure hydrocephalus

A

An abnormal build-up of CSF in the ventricles, causing them to enlarge, due to reduced CSF absorption at the arachnoid villi.

Risk factors:

  • Old age.
  • Head trauma.
  • Brain infection.
  • Brain tumour.
  • Subarachnoid haemorrhage.
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25
Q

Describe the clinical features of normal pressure hydrocephalus

A
  • Progressively worsening memory lapses
  • Personality and mood disturbances
  • Difficulties with walking (gait abnormality)
  • Dementia
  • Urinary incontinence
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26
Q

Management of normal pressure hydrocephalus?

A

Ventriculoperitoneal (VP) shunt

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27
Q

Which drugs are associated with Steven Johnson syndrome?

A

Carbamazepine, lamotrigine, allopurinol, sulfonamide, phenobarbital.

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28
Q

Describe the features of Steven Johnson syndrome

A
  • Flu-like symptoms, such as a high temperature, sore throat, cough and joint pain.
  • Rash on hands, arms, face and legs.
  • Blisters on mucous membranes.
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29
Q

MOA of carbamazepine

A
  • Binds to sodium channels increases their refractory period.
  • Sodium channel antagonist.
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30
Q

Describe the adverse effects of carbamazepine

A
  • P450 enzyme inducer
  • Dizziness and ataxia
  • Drowsiness
  • Headache
  • Visual disturbances (especially diplopia)
  • Steven-Johnson syndrome
  • Leucopenia and agranulocytosis
  • Hyponatraemia secondary to SIADH.
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31
Q

Describe the features of juvenile myoclonic epilepsy

A
  • Infrequent generalized seizures, often in morning or following sleep deprivation.
  • Daytime absences.
  • Sudden, shock-like myoclonic seizure (these may develop before seizures).
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32
Q

Which spinal tracts are affected in subacute combined degeneration of the spinal cord?

A
  • Dorsal column: distal tingling/burning/sensory loss is symmetrical (tends to affect the legs more than the arms) and impaired proprioception and vibration sense.
  • Lateral corticospinal tracts: muscle weakness, hyperreflexia, and spasticity. Brisk knee reflexes, absent ankle jerks and extensor plantars.
  • Spinocerebellar tracts: sensory ataxia → gait abnormalities, positive Romberg’s sign.
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33
Q

Humeral shaft fracture is at risk of which nerve injury?

A

Radial nerve

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34
Q

Ulnar nerve injury typically causes what deformity?

A

Claw hand

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35
Q

What is the medical term for fast, involuntary muscle jerking?

A

Myoclonus

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36
Q

Define Lance-Adams syndrome

A

Incredibly rare complication of successful CPR, leading to post-hypoxic myoclonus caused by cerebral hypo-perfusion and global CNS damage.

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37
Q

Spinal cord damage can lead to…

A

Sphincter (bowel/bladder) disturbance and incontinence.

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38
Q

How would you test for a polyneuropathy?

A

Nerve conduction tests

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39
Q

Investigation of choice for suspected spinal injury?

A

MRI spine

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40
Q

Outline the causes of polyneuropathy

A
  • Idiopathic.
  • Diabetes mellitus.
  • Systemic illness: critical illness polyneuropathy, hypothyroidism, chronic kidney disease, chronic liver disease, amyloidosis.
  • Autoimmune: Guillain-Barré syndrome.
  • Inflammatory: chronic inflammatory demyelinating polyneuropathy (CIDP).
  • Toxic: Alcohol, chemotherapy, heavy metals.
  • Neoplastic: myeloma, paraneoplastic syndrome, lymphoma.
  • Hereditary: Charcot-Marie-Tooth.
  • Nutritional: Vitamin B12, folate, pyridoxine, vitamin E deficiencies.
  • Vasculitis.
  • Medications: nitrofurantoin, isoniazid.
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41
Q

What is Guillain-Barré syndrome (GBS)?

A

An acute, autoimmune polyneuropathy.

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42
Q

What is the treatment for GBS?

A
  • IV immunoglobulins (first-line)
  • Plasmapheresis
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43
Q

Outline the complications of GBS

A
  • Type 2 respiratory failure —> intubation and ventilation
  • PE (a leading cause of death)
  • Pneumonia
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44
Q

What would a LP show in GBS?

A

Raised protein and normal cell count

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45
Q

Dysphasia vs dysarthria

A
  • Dysphasia: impairment in the production of language. Dysphasia is a disorder of language.
  • Dysarthria: motor speech disorder where speech muscles are damaged, paralysed or weakened. Dysarthria is a disorder of speech.
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46
Q

In status epileptics, which causes need to be ruled out first?

A

Hypoxia and hypoglycaemia

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47
Q

Which nerve is adductor pollicis innervated by?

A

Ulnar nerve - damage results in loss of thumb adduction.

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48
Q

Cause of lateral medullary syndrome?

A

Occlusion of the posterior inferior cerebellar artery.

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49
Q

Describe the features of lateral medullary syndrome

A

Cerebellar features:

  • Ataxia
  • Nystagmus

Brainstem features:

  • Ipsilateral: dysphagia, facial numbness, cranial nerve palsy e.g. Horner’s
  • Contralateral: limb sensory loss
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50
Q

Outline the UMN lesion signs

A

SPASTICITY:

  • Flexion of UL.
  • Extension of LL.
  • Increased tone (clasp knife).
  • Pyramidal weakness (weak UL extensors, weak LL flexors - imbalance).
  • Brisk reflexes.
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51
Q

Describe the gait patterns for UMN lesion

A
  • Scissor gait (hip adduction).
  • Hemiplegic gait (circumduction of spastic leg).
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52
Q

What is Brown-Sequard syndrome?

A
  • Lateral hemisection of the spinal cord.
  • Causes ipsilateral motor weakness and loss of proprioception/vibration. Contralateral loss of pain/temperature.
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53
Q

Describe the MRC power grading scale

A
  • Grade 0: No muscle movement
  • Grade 1: Trace of contraction
  • Grade 2: Movement at the joint with gravity eliminated
  • Grade 3: Movement against gravity, but not against added resistance
  • Grade 4: Movement against an external resistance with reduced strength
  • Grade 5: Normal strength
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54
Q

Management for medication overuse headache

A
  • Simple analgesics and triptans should be withdrawn abruptly.
  • Opioid analgesics should be gradually withdrawn.
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55
Q

Wrist drop is caused by damage to which nerve?

A

Radial nerve

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56
Q

What is the gold standard investigation for viewing demyelinating lesions?

A

MRI with contrast

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57
Q

Lesion in the hypoglossal nerve results in what?

A

Tongue deviates towards side of lesion.

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58
Q

What will a lesion in the facial nerve result in?

A

Spastic paralysis of the muscles in the contralateral lower quadrant of the face.

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59
Q

Classify subdural haematomas

A
  • Acute: Symptoms usually develop within 48 hours of injury, characterised by rapid neurological deterioration.
  • Subacute: Symptoms manifest within days to weeks post-injury, with a more gradual progression.
  • Chronic: Common in the elderly, developing over weeks to months. Patients may not recall a specific head injury.
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60
Q

Describe the typical presentation of an acute subdural haematoma

A
  • History of head trauma.
  • Lucid interval followed by a gradual decline in consciousness.
  • Headache, confusion, and lethargy.
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61
Q

What is Cushing’s triad for raised ICP?

A

Bradycardia, hypertension and respiratory irregularities.

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62
Q

Which patients are at risk of chronic subdural haematomas?

A

Elderly and alcoholics - due to brain atrophy and therefore fragile or taut bridging veins.

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63
Q

Describe the typical presentation of a chronic subdural haematoma

A

Memory loss, confusion, reduced consciousness or neurological deficit.

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64
Q

Acute vs. Chronic subdural haematoma on CT scan

A
  • Acute: hyperdense
  • Chronic: hypodense
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65
Q

What is the management for chronic symptomatic subdural haematomas?

A

Surgical decompression with burr holes.

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66
Q

What is the management for acute symptomatic subdural haematomas?

A

Decompressive craniectomy/craniotomy.

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67
Q

Define the Arnold-Chiari malformation

A

The downward displacement, or herniation, of the cerebellar tonsils through the foramen magnum.

Features:

  • Non-communicating hydrocephalus may develop as a result of obstruction CSF outflow.
  • Headache.
  • Syringomyelia.
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68
Q

Outline the features for intracranial venous sinus thrombosis

A
  • Headache (may be sudden onset)
  • Nausea & vomiting
  • Reduced consciousness
  • Raised d-dimer/RF for thrombosis
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69
Q

What is the gold standard investigation for intracranial venous sinus thrombosis?

A

MRI venography

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70
Q

Describe the features of meningitis

A

Symptoms:

  • Headache
  • Fever
  • Nausea/vomiting
  • Photophobia
  • Drowsiness
  • Seizures

Signs:

  • Neck stiffness
  • Purpuric rash (particularly with invasive meningococcal disease)
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71
Q

Describe the presentation of a psychogenic non-epileptic seizure

A
  • Widespread convulsions without LOC.
  • No post-ictal state.
  • Can remember.
  • Gradual onset.
  • Past psychiatric history.
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72
Q

What can be used to differentiate between a true seizure and a pseudoseizure?

A

Prolactin - raised in a true epileptic seizure.

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73
Q

Outline the complications of meningitis

A
  • Sensorineural hearing loss (most common).
  • Seizures.
  • Focal neurological deficit.
  • Infective: sepsis, intracerebral abscess.
  • Pressure: brain herniation, hydrocephalus.
  • Memory loss.
  • Waterhouse-Friderichsen syndrome (adrenal insufficiency secondary to adrenal haemorrhage).
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74
Q

A weakness of foot dorsiflexion (foot drop) and foot eversion is a result of which nerve palsy?

A

Common peroneal nerve

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75
Q

Which nerve is responsible for plantar flexion?

A

Tibial nerve

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76
Q

Define Lhermitte’s sign

A

Paraesthesiae in limbs on neck flexion

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77
Q

Outline the features of MND

A
  • Muscle wasting
  • Fasciculations
  • Dysphagia
  • Slurred speech (dysarthria)
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78
Q

Describe the non-motor symptoms of PD

A
  • Depression
  • Dementia
  • REM sleep disorder (vivid dreams)
  • Anosmia
  • Postural hypotension
  • Constipation
  • Stooped posture
  • Monophonic speech
  • Hypersalivation
  • Dysphagia
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79
Q

How would you diagnose PD?

A
  • Clinical.
  • But can use DaTscan (SPECT) if clinical features are not obvious.
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80
Q

Outline the steps in a PD examination

A
  • Inspection: tremor, face (limited facial expression).
  • Tone: cogwheel rigidity.
  • Bradykinesia.
  • Power (normal).
  • Reflexes (normal).
  • Sensation.
  • Extras: gait, writing, eye movements, cerebellar signs, postural BP.
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81
Q

What does Romberg’s sign test for?

A

Sensory ataxia

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82
Q

How would you assess a patient for neurodeficits?

A
  • UMN/LMN/both?
  • Pattern of signs: unilateral - brain; bilateral - spinal cord.
  • Sphincter involvement: retention - UMN (e.g. spinal cord); incontinence - LMN (e.g. cauda equina).
  • UL/LL/both affected?
  • Autonomic dysreflexia: bradycardia, hypertension, retention, flushing/sweating above lesion (T6 and above).
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83
Q

Occlusion of which artery causes contralateral homonymous hemianopia with macular sparing and visual agnosia?

A

Posterior cerebral artery

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84
Q

Management of patients on warfarin/DOAC/bleeding disorders who are suspected of having a TIA?

A

CT head to exclude haemorrhage

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85
Q

Is there forehead sparing in UMN or LMN facial nerve palsy?

A

UMN

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86
Q

Broca’s vs. Wernicke’s aphasia

A
  • Broca’s: expressive
  • Wernicke’s: receptive
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87
Q

Fluctuating consciousness indicates what type of brain bleed?

A

Subdural haematoma

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88
Q

What is the first line imaging investigation for a suspected stroke?

A

Non-contrast CT head

89
Q

Describe the features of a posterior circulation stroke

A
  • Homonymous hemianopia.
  • 5 D’s: dizziness, drowsiness, dysarthria, diplopia, dysphagia.
90
Q

Compare the signs seen on CT for an acute ischaemic stroke vs haemorrhagic stroke

A
  • Ischaemic: ‘hyperdense artery’ sign.
  • Haemorrhagic: hyperdense material (blood) surrounded by low density (oedema).
91
Q

Do cerebellar lesions cause contralateral or ipsilateral limb signs?

A

Ipsilateral

92
Q

What are the functions of the extra-ocular muscles?

A
  • Medial Rectus: adduction
  • Lateral Rectus: abduction
  • Superior Rectus: elevation and intorsion
  • Inferior Rectus: depression and extorsion
  • Superior Oblique: intorsion and depression
  • Inferior Oblique: extortion and elevation
93
Q

Which cranial nerves innervate the ocular muscles?

A

LR6 SO4

CN III - all the rest

94
Q

Outline the forms of MND

A
  • Primary lateral sclerosis (UMN signs).
  • Spinal muscle atrophy (LMN signs).
  • Progressive bulbar palsy.
  • Amyotrophic lateralsclerosis (UMN and LMN signs).
95
Q

What is the mean age of onset for MS?

A

30

96
Q

What is the most common presentation of MS?

A

Optic neuritis

97
Q

What causes a positive Lhermitte’s sign?

A

MS - caused by stretching the demyelinated dorsal column.

98
Q

Which analgesia can lead to a medication overuse headache?

A

Opioids

99
Q

Provide 4 examples of neuropathic pain

A
  • Diabetic neuropathy
  • Post-herpetic neuralgia
  • Trigeminal neuralgia
  • Prolapsed intervertebral disc
100
Q

What features may suggest a sinister headache?

A
  • Vomiting more than once with no other cause.
  • New neurological deficit (motor or sensory).
  • Reduction in conscious level (as measured by the Glasgow coma score).
  • Valsalva (associated with coughing or sneezing) or positional headaches.
  • Progressive headache with a fever.

If two or more of the ‘red-flag’ criteria are present then an urgent CT scan should be performed.

101
Q

What are the risk factors for idiopathic intracranial hypertension?

A
  • Obesity
  • Female sex
  • Pregnancy
  • Drugs: COCP, steroids, tetracyclines, retinoids/vitamin A, lithium, ciclosporin, mineralocorticoids, amiodarone.
102
Q

Describe the features of idiopathic intracranial hypertension

A
  • Headache
  • Blurred vision
  • Papilloedema (usually present)
  • Enlarged blind spot
  • Sixth nerve palsy (may be present)
103
Q

Outline the treatment of idiopathic intracranial hypertension

A
  • Weight loss
  • Carbonic anhydrase inhibitors e.g. acetazolamide
104
Q

A woman suddenly falls to the ground then lays motionless

A

Atonic seizures

105
Q

First line treatment for a woman of childbearing age who presents with generalised tonic-clonic seizures?

A

Lamotrigine or levetiracetam

106
Q

Management of an acute MS relapse

A

High dose steroids

107
Q

Define Parkinsonism

A

The presence of bradykinesia and at least one of:

  • Resting tremor
  • Rigidity
  • Postural instability
108
Q

Parkinson’s tremor vs benign essential tremor

A

Parkinson’s tremor:

  • Asymmetrical
  • 4-6 Hz
  • Worse at rest
  • Improves with movement
  • Other PD features
  • No change with alcohol

Benign essential tremor:

  • Symmetrical
  • 6-12 Hz
  • Improves with rest
  • Worse with intentional movement
  • No other PD features
  • Improves with alcohol
109
Q

Which primary tumours are the most common cause of brain metastases?

A

Lung

110
Q

What is the most common cause of polyneuropathy in the western world?

A

Diabetes

111
Q

ABCDE mnemonic of peripheral neuropathy causes

A
  • A – Alcohol.
  • B – B12 deficiency.
  • C – Cancer (e.g. myeloma) and Chronic kidney disease.
  • D – Diabetes and Drugs (e.g., isoniazid, amiodarone, leflunomide and cisplatin).
  • E – Every vasculitis.
112
Q

Define palsy

A

The motor component of a neuropathy (i.e. the weakness).

113
Q

A 75-year-old man presents to the emergency department via ambulance after experiencing a 15-minute episode of slurred, confused speech, dizziness, sweating and generalised weakness. His medical history includes hypercholesterolaemia and type 2 diabetes, which are managed with atorvastatin, metformin, and gliclazide. Apart from dysphasia, his neurological examination is unremarkable.

What investigation should be done first to investigate this presentation?

A

Capillary blood glucose - hypoglycaemia can lead to focal neurological symptoms and needs to be ruled out as a mimic of TIA.

114
Q

Describe features of a pontine haemorrhage

A
  • Reduced GCS.
  • Paralysis.
  • Bilateral pin point pupils.
115
Q

Outline the DVLA guidance for seizures and epilepsy

A
  • First unprovoked/isolated seizure: 6 months off if there are no relevant structural abnormalities on brain imaging and no definite epileptiform activity on EEG. If these conditions are not met then this is increased to 12 months.
  • For patients with established epilepsy or those with multiple unprovoked seizures: may qualify for a driving licence if they have been free from any seizure for 12 months, or if there have been no seizures for 5 years (with medication if necessary) a ‘til 70 licence is usually restored.
  • Withdrawal of epilepsy medication: should not drive whilst anti-epilepsy medication is being withdrawn and for 6 months after the last dose.
116
Q

Management of migraines

A
  • Acute: triptan + NSAID, or triptan + paracetamol.
  • Prophylaxis: propranolol, topiramate (teratogenic - avoid in women of childbearing age), or amitriptyline.
117
Q

Why are LPs contraindicated with raised ICP?

A

If there is a SOL in the brain, removing CSF from the spinal column may cause brain tissue to herniate through the foramen magnum, causing brain stem compression.

118
Q

A sudden onset ‘thunderclap’ headache reaching maximum intensity within 5 mins, is suggestive of what?

A

Subarachnoid haemorrhage

119
Q

What influences balance?

A
  • Vision
  • Motor praxis
  • Sensory awareness
  • Cerebellum
  • Vestibular function
120
Q

Which CN does the pupillary light reflex use?

A
  • Optic nerve - afferent fibres sense light.
  • Oculomotor nerve - efferent fibres contract pupillary sphincter.
121
Q

Which gland does the facial nerve travel through?

A

Parotid gland

122
Q

Why can hyperacusis occur in Bell’s palsy?

A

Due to weakness of the stapedius muscle, which is innervated by a branch of the facial nerve.

123
Q

Pseudobulbar palsy

A
  • Due to an UMN lesion caused by bilateral disturbance of the corticobulbar tracts.
  • Characterised by dysarthria, dysphagia, facial and tongue weakness, and emotional lability.
124
Q

LMN facial nerve palsy and a vesicular rash around ear

A

Ramsay Hunt syndrome

125
Q

List differentials for LMN facial nerve palsy

A
  • Bell’s palsy.
  • Ramsay Hunt syndrome.
  • Infections: otitis media, otitis externa, HIV, Lyme disease.
  • Systemic diseases: diabetes, sarcoidosis, leukaemia, MS, GBS.
  • Tumours: acoustic neuroma, parotid tumour, cholesteatoma.
  • Trauma: direct nerve injury, surgery, base of skull fractures.
126
Q

Describe the function of the 12 cranial nerves

A
  • Olfactory (I): smell.
  • Optic (II): sight.
  • Oculomotor (III): eye movements (MR, IO, SR, IR), pupil constriction, accommodation, eyelid opening.
  • Trochlear (IV): eye movements (SO - move eye down and out, intorsion).
  • Trigeminal (V): facial sensation, muscles of mastication.
  • Abducens (VI): eye movements (LR - abduction).
  • Facial (VII): muscles of facial expression, taste anterior 2/3 tongue, lacrimation, salivation.
  • Vestibulocochlear (VIII): hearing, balance.
  • Glossopharyngeal (IX): taste posterior 1/3 tongue, salivation, swallowing, input from carotid body & sinus.
  • Vagus (X): phonation, swallowing, innervated viscera.
  • Accessory (XI): head and shoulder movement.
  • Hypoglossal (XII): tongue movement.
127
Q

Which cranial nerves are sensory, motor or both?

A
  • I: sensory
  • II: sensory
  • III: motor
  • IV: motor
  • V: both
  • VI: motor
  • VII: both
  • VIII: sensory
  • IX: both
  • X: both
  • XI: motor
  • XII: motor

Some Say Marry Money But My Brother Says Big Brains Matter Most

128
Q

Describe the features of a trochlear nerve palsy

A

Defective downward gaze → vertical diplopia.

129
Q

In a vagus nerve palsy, which way would the uvula deviate?

A

Away from site of lesion

130
Q

Accessory nerve palsy

A

Weakness turning head to contralateral side.

131
Q

What are the afferent and efferent nerves of the corneal reflex?

A
  • Afferent: ophthalmic division of trigeminal nerve.
  • Efferent: facial nerve.
132
Q

What are the afferent and efferent nerves of the gag reflex?

A
  • Afferent: glossopharyngeal nerve.
  • Efferent: vagus nerve.
133
Q

Describe the features of benign rolandic epilepsy

A
  • Paraesthesia (e.g. unilateral face), usually on waking up or at night.
  • Partial seizures, but secondary generalisation may occur —> tonic-clonic movements.
134
Q

Myasthenia gravis is associated with what other condition?

A

Thymomas

135
Q

Which muscle types are not usually affected by myasthenia gravis?

A

Cardiac and smooth muscle.

136
Q

What does fatiguability mean with regards to myasthenia gravis?

A

Increased muscle weakness on repeated use.

137
Q

What will nerve conduction studies in MND show?

A

They will be normal.

138
Q

Which nerve roots are affected in Klumpke’s palsy?

A

C8/T1

139
Q

Finger abduction weakness suggests which nerve root lesion?

A

T1

140
Q

What is the MOA of phenytoin?

A
  • Binds to sodium channels increasing their refractory period.
  • Sodium channel antagonist.
141
Q

Describe the adverse effects of phenytoin

A
  • P450 enzyme inducer
  • Dizziness and ataxia
  • Megaloblastic anaemia (secondary to altered folate metabolism)
  • Peripheral neuropathy
  • Toxic epidermal necrolysis
  • Hepatitis
  • Aplastic anaemia
  • Teratogenic: cleft palate and congenital heart disease
  • Gum hypertrophy and cerebellar atrophy.
142
Q

Why can PD cause postural hypotension?

A

Due to autonomic dysfunction

143
Q

Describe the features of neuroleptic malignant syndrome

A

It occurs within hours to days of starting an antipsychotic and the typical features are:

  • Pyrexia.
  • Muscle rigidity.
  • Autonomic lability: hypertension, tachycardia and tachypnoea.
  • Bradykinesia, hyporeflexia and lead-pipe rigidity.
  • Agitated delirium with confusion.
  • Raised CK —> AKI.
144
Q

Lip smacking and post-ictal dysphasia are localising features of which type of seizure?

A

Temporal lobe seizure

145
Q

Describe the features of lateral pontine syndrome

A

Similar to lateral medullary syndrome, but ipsilateral facial paralysis and deafness.

146
Q

Lateral pontine syndrome affects which artery?

A

Anterior inferior cerebellar artery

147
Q

‘Locked-in’ syndrome affects which artery?

A

Basilar artery

148
Q

What is the investigation of a choice for an acoustic neuroma?

A

MRI of the cerebellopontine angle

149
Q

Describe general tonic-clonic (grand mal) seizures

A
  • Involves tonic (muscle tensing) and clonic (muscle jerking) associated with complete LOC.
  • Aura (abnormal sensation) may occur before seizure.
  • There may be tongue biting, incontinence, groaning and irregular breathing.
  • Prolonged post-ictal period after - confused, tired, irritable or low.
150
Q

Describe focal (partial) seziures

A
  • Occurs in an isolated area of the brain e.g. temporal lobes.
  • Remain awake.
  • Focal aware (simple partial) or focal impaired awareness (complex partial).
  • Non-motor: Déjà vu, strange smells, tastes, sight or sound sensations, unusual emotions.
  • Motor: abnormal behaviours, Jacksonian march (clonic movements travelling proximally) - frontal lobe.
151
Q

Describe myoclonic seziures

A
  • Sudden, brief muscle contractions, like an abrupt jump or jolt.
  • Remain awake.
152
Q

Describe tonic seizures

A
  • Sudden onset of increased muscle tone, where the entire body stiffens.
  • Lasts seconds or minutes.
153
Q

Describe atonic seizures

A
  • ‘Drop attacks’.
  • Sudden loss of muscle tone, often resulting in a fall.
  • Only last briefly and usually aware.
  • Begin in childhood.
  • May be indicative of Lennox-Gastaut syndrome.
154
Q

Describe absence seizures

A
  • Usually seen in children.
  • Patient becomes blank, stares into space, and then abruptly returns to normal.
  • Unaware of surroundings.
  • Last 10-20 secs.
155
Q

Outline the differential diagnosis for seizures

A
  • Vasovagal syncope (fainting).
  • Pseudoseizures (non-epileptic attacks).
  • Cardiac syncope (e.g. arrhythmias or structural heart disease).
  • Hypoglycaemia.
  • Hemiplegic migraine.
  • TIA.
156
Q

Outline the management of epilepsy

A
  • Generalised tonic-clonic: Sodium valproate (men), Lamotrigine or Levetiracetam (women of childbearing age).
  • Focal: Lamotrigine or Levetiracetam (first-line), or Carbamazepine (second-line).
  • Myoclonic: Sodium valproate (men), Levetiracetam (women of childbearing age).
  • Tonic and atonic: Sodium valproate (men), Lamotrigine (women of childbearing age).
  • Absence: Ethosuximide.
157
Q

What is the MOA of sodium valproate?

A

Increases GABA activity

158
Q

List the side effects of sodium valproate

A
  • Teratogenic (NTD and developmental delay)
  • Liver damage and hepatitis
  • Hair loss
  • Tremor
  • Reduce fertility
  • Inhibits P450 enzyme
  • Thrombocytopenia
159
Q

Where should patients be referred after an initial presentation and management of a suspected epileptic seizure?

A

First fit clinic

160
Q

What is the MOA of lamotrigine?

A

Sodium channel antagonist

161
Q

What are the complications from seizures?

A
  • Trauma, drowning, road traffic accidents and falls.
  • Status epilepticus.
  • Sudden unexpected death in epilepsy (SUDEP).
162
Q

Investigations for first seizure?

A
  • EEG
  • MRI brain
163
Q

Outline the monitoring of anti-convulsants

A
  • Carbamazepine: plasma concentration for optimal response measured after 1-2 weeks.
  • Sodium valproate: monitor LFTs before therapy and during first 6 months, measure FBC before starting and before surgery (bleeding risk).
164
Q

In GBS, what do nerve conduction studies show?

A

Decreased motor nerve conduction velocity - due to demyelination.

165
Q

List the causes of headaches

A
  • Tension headaches
  • Migraines
  • Cluster headaches
  • Secondary headaches
  • Sinusitis
  • Giant cell arteritis
  • Glaucoma
  • Intracranial haemorrhage
  • Venous sinus thrombosis
  • Subarachnoid haemorrhage
  • Medication overuse
  • Hormonal headache
  • Cervical spondylosis
  • Carbon monoxide poisoning
  • Trigeminal neuralgia
  • Raised ICP
  • Brain tumours
  • Meningitis
  • Encephalitis
  • Brain abscess
  • Pre-eclampsia
166
Q

Define trigeminal autonomic cephalalgias (TACs)

A

A collection of primary headache disorders characterised by unilateral headache (in the trigeminal distribution) and ipsilateral parasympathetic autonomic features.

167
Q

Name the four types of TACs

A
  • Cluster headache (most common).
  • Paroxysmal hemicrania.
  • Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT).
  • Hemicrania continua.
168
Q

A 72-year-old man develops visual problems. He is noted to have a left homonymous hemianopia with some macula sparing.

A

Occipital cortex

169
Q

A 54-year-old man complains of sweating, headaches and reduced visual fields, saying it’s like having ‘blinders’ on. He is noted to have a bitemporal hemianopia on examination.

A

Optic chiasm

170
Q

A 30-year-old man with a family history of early blindness is concerned that he is developing ‘tunnel vision’.

A

Retina

171
Q

When can anti-epileptic drugs be stopped?

A
  • Seizure free for > 2 years.
  • Stopped over 2-3 months.
172
Q

What part of the brain does herpes simplex encephalitis affect?

A

Temporal lobes

173
Q

Describe the features of HSV encephalitis

A
  • Fever, headache, psychiatric symptoms, seizures, vomiting.
  • Focal features e.g. aphasia.
174
Q

Describe the patterns of homonymous quadrantanopias

A

PITS (Parietal-Inferior, Temporal-Superior)

175
Q

Which condition is associated with bilateral vestibular schwannomas?

A

Neurofibromatosis type 2

176
Q

Which nerve is at risk for a surgical neck of humerus fracture?

A

Axillary nerve

177
Q

A 32-year-old window cleaner is admitted after falling off the roof. He reports that he had slipped off the top of the roof and was able to cling onto the gutter for a few seconds. The patient has
Horner’s syndrome. Which nerve roots are at risk?

A

Brachial Trunks C8-T1 (Klumpke’s paralysis)

178
Q

A 32-year-old rugby player is hit hard on the shoulder during a rough tackle. Clinically his arm is hanging loose on the side. It is pronated and medially rotated. Which nerve roots are affected?

A

Brachial Trunks C5-6 (Erb’s palsy)

179
Q

Which nerve is at risk with humeral supracondylar fracture?

A

Median nerve

180
Q

Which nerve is at risk with a fractured humeral medial epicondyle?

A

Ulnar nerve

181
Q

Outline causes of bacterial meningitis

A
  • Neisseria meningitidis (gram negative diplococci).
  • Streptococcus pneumoniae (pneumococcus - gram positive diplococci).
  • Haemophilus influenzae.
  • Group B streptococcus (GBS) (neonates).
  • Listeria monocytogenes (neonates).
182
Q

Outline the causes of viral meningitis

A
  • Enteroviruses (e.g. coxsackievirus).
  • Herpes simplex virus.
  • Varicella zoster virus.
183
Q

What CSF result would you expect with bacterial meningitis?

A
  • High neutrophils
  • Low glucose
  • High protein
184
Q

Investigations for bacterial meningitis?

A
  • Meningococcal PCR
  • Blood cultures
  • LP
185
Q

Describe the management of meningitis

A
  • < 3 months: cefotaxime + amoxicillin.
  • > 3 months: ceftriaxone.
  • Aciclovir (viral).
  • Vancomycin (if risk of penicillin-resistant pneumococcal infection).
  • Dexamethasone in bacterial meningitis to reduce risk of hearing loss.
  • Notifiable diseases to the UK Health Security Agency.
186
Q

What should be done is someone has been in close contact with a meningococcal infection within 7 days of illness onset?

A

Post-exposure prophylaxis - single dose of ciprofloxacin.

187
Q

Name one key complication from meningitis

A

Hearing loss

188
Q

Where is the CSF located?

A

Subarachnoid space

189
Q

What are the triad of symptoms indicating meningism?

A

Headache, neck stiffness and photophobia.

190
Q

In the community, if a patient has suspected meningitis plus a non-blanching rash, what should be done?

A

IV/IM benzylpenicillin

191
Q

If a patient has a severe penicillin allergy, what is the antibiotic of choice for meningitis?

A

Chloramphenicol, but discuss with microbiology first.

192
Q

Which vaccines protect against meningitis?

A
  • Hib
  • MenB and MenACWY
  • Pneumococcal
193
Q

Epigastric aura and automatisms are features of which focal seizure?

A

Temporal lobe seizure

194
Q

What is the ROSIER tool?

A

Recognition Of Stroke In the Emergency Room - gives a score based on the clinical features and duration. Stroke is possible in patients scoring one or more.

195
Q

Which conditions mimic strokes?

A
  • Toxic/metabolic: hypoglycaemia, drug and alcohol consumption.
  • Neurological: seizure, migraine, Bell’s palsy.
  • Space occupying lesion: tumour, haematoma.
  • Infection: meningitis/encephalitis, systemic infection with ‘decompensation’ of old stroke.
  • Syncope: extremely uncommon presentation of TIA, many other causes.
  • Non-organic: functional neurological disorders (FND).
196
Q

What is the NIHSS score?

A
  • A scoring system out of 42, which has been designed as a predictive score of clinical outcome in stroke.
  • < 4 associated with a good clinical outcome.
  • > 22 indicates a significant proportion of the brain is affected by ischaemia, and as such, there is higher risk of cerebral haemorrhage with thrombolysis.
  • ≥ 26 is often considered a contraindication to thrombolysis.
197
Q

Name 2 complications from strokes

A
  • Long-term disability.
  • Mortality (4th leading cause of mortality in the UK).
198
Q

Define amaurosis fugax and its causes

A
  • Short-lived monocular blindness - described as a black curtain coming across the vision.
  • Transient visual loss of ischaemic origin.
  • Causes: transient obstruction of the ophthalmic artery, giant cell arteritis and CRAO.
199
Q

Define Todd’s paresis

A

Weakness or paralysis in part or all of the body after a seizure.

200
Q

Describe the features of degenerative cervical myelopathy

A
  • Pain (affecting the neck, upper or lower limbs).
  • Loss of motor function (loss of digital dexterity, preventing simple tasks such as holding a fork or doing up their shirt buttons, arm or leg weakness/stiffness leading to impaired gait and imbalance).
  • Loss of sensory function causing numbness.
  • Loss of autonomic function (urinary or faecal incontinence and/or impotence) - these can occur and do not necessarily suggest cauda equina syndrome in the absence of other hallmarks of that condition.
  • Hoffman’s sign: is a reflex test to assess for cervical myelopathy. It is performed by gently flicking one finger on a patient’s hand. A positive test results in reflex twitching of the other fingers on the same hand in response to the flick.
201
Q

What is the gold standard test for degenerative cervical myelopathy?

A

MRI of the cervical spine

202
Q

Describe the features of herpes simplex encephalitis

A

Fever, headache, psychiatric symptoms, seizures, focal features e.g. aphasia.

203
Q

What score can be used to measure disability or dependence in activities of daily living in stroke patients?

A

The Barthel index

204
Q

What is the standard target time for thrombectomy in an acute ischaemic stroke?

A

Within 6 hours

205
Q

Which disease-modifying drug is used first-line in preventing MS relapses?

A

Natalizumab - mAb that antagonises alpha-4 beta-1-integrin found on the surface of leuckocytes, inhibiting migrating of leukocytes across the BBB.

206
Q

MOA of triptans?

A

5-HT1 agonists

207
Q

What are the contraindications to triptans?

A

CVD or cerebrovascular diease

208
Q

Obese, young female with headaches/blurred vision

A

Idiopathic intracranial hypertension

209
Q

Spasticity vs rigidity

A
  • Spasticity is associated with pyramidal tract lesions (e.g. stroke).
  • Rigidity is associated with extrapyramidal tract lesions (e.g. Parkinson’s disease).
  • Spasticity and rigidity both involve increased tone.
  • Spasticity is ‘velocity-dependent’ - the faster you move the limb, the worse it is. There is typically increased tone in the initial part of the movement which then suddenly reduces past a certain point (‘clasp knife spasticity’). Spasticity is also typically accompanied by weakness.
  • Rigidity is ‘velocity independent’ - it feels the same if you move the limb rapidly or slowly.

Two main sub-types of rigidity:

  • Cogwheel rigidity involves a tremor superimposed on the hypertonia, resulting in intermittent increases in tone during movement of the limb. This subtype of rigidity is associated with Parkinson’s disease.
  • Lead pipe rigidity involves uniformly increased tone throughout the movement of the muscle. This subtype of rigidity is typically associated with neuroleptic malignant syndrome.
210
Q

Describe the surgical sieve

A

VITAMIN CDEF

  • Vascular
  • Infective/inflammatory
  • Traumatic
  • Autoimmune
  • Metabolic
  • Iatrogenic/idiopathic
  • Neoplastic
  • Congenital
  • Developmental/degenerative
  • Endocrine/environmental
  • Functional
211
Q

What is autonomic dysreflexia?

A
  • A clinical syndrome occurring in patients who have had a spinal cord injury at, or above T6 spinal level.
  • Features include: hypertension, bradycardia, flushing and sweating.
212
Q

What is the most common trigger for autonomic dysreflexia?

A

Faecal impaction or urinary retention

213
Q

Rapid onset dementia and myoclonus

A

Creutzfeldt-Jakob disease

214
Q

Presentation of hydrocephalus in infants

A

Increased head circumferences, a bulging fontanelle and sunsetting of the eyes (impaired upwards gaze).

215
Q

Define meningiomas

A

Benign tumours that arise from the arachnoid cap cells of the meninges but are typically located next to the dura

216
Q

Middle-aged, personality changes, involuntary movements

A

Huntington’s disease

217
Q

What is the inheritance of Huntington’s disease?

A
  • Autosomal dominant
  • Trinucleotide repeat disorder
  • Anticipation may be seen, where the disease presents at an earlier age in successive generations
  • Results in degeneration of cholinergic and GABAergic neurons in the striatum of BG
218
Q

Describe the features of Huntington’s disease

A
  • Chorea (multiple involuntary, irregular or unpredictable muscle movements)
  • Personality changes and intellectual impairment
  • Dystonia
  • Saccadic eye movements

Elderly, Neuro & MSK (5 decks)

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