Neuro Flashcards
Superior MCA stroke classic
Motor + sensory of arm and face
Spares legs
Inferior MCA stroke classic
Motor + sensory arm and face deficit
Spares legs
Hemianopsia
Hemineglect
Rt ACA stroke classic
Contralateral motor + sensory deficit of leg
Stoke management before CT
ABC
Oxygen
IVF
Role of steroids in strokes
No role
Stroke risk index?
CHADS2 C: CHF H: HTN A: age > 75 D: DM S: 2ry prevention for prior event.
All 1 point, S has 2 points.
0 = low risk
1-2 = moderate
>3 = high
What’s Anton’s syndrome?
Patient believe they can see when they can’t.
Unaware of blindness.
Anton’s syndrome is secondary to?
Posterior cerebral artery occlusion
Rx of stroke?
- < 3 hrs symptoms: tPA
- > 3 hrs: ASA
If already on aspirin:
Add dipyridamole or switch to clopidogrel. - Hemorrhoid stroke = no Rx
Causes of Parkinson’s
- Idiopathic
- Meds:
antipsychotic (thorazipine)
Reserpine
Metoclopromide
Rx of Parkinson’s
- Mild:
- Anticholinergic (benztropine, trihexyphenidyl)
- Amantadine - Sever:
- dopamine agonist (pramipexole, ropinirole)
- L-dopa / carbidopa
- COMPT (tolcapone, entacapone)
- MOAI (rasagiline, selegiline)
Rx restless leg syndrome
Sleep hygiene: warm bath, stretch, massage.
Dopamine agonists:
Pramipexole
Ropinirole
Carbidopa/Levodopa
Opioids
Drugs worsen restless leg
Haloperidol (dopamine antagonist)
Naloxone (opioid antagonist)
Dorsal column lesions classic
Loss of position and vibratory sensation ONLY.
Narrow base position + look down to compensate proprioception loss.
What’s Romberg sign?
Fall of close their eyes.
Indicates loss of position / proprioception.
Walk in Parkinson’s
Falls esp when turning.
Stopping
Freezing (difficulty initiating walks)
Shuffle
Cerebellar lesion walk
Wide base when standing.
-ve Romberg sign.
No vibration or position loss.
Normal pressure hydrocephalus Classic
Ataxia
Urinary incontinence
Dementia
Dx normal pressure hydrocephalus
MRI
Efficacy of cholinesterase inhibitors in vascular and Alzheimer’s
Equal
Cholinesterase inhibitors
Donepezil
Rivastigmine
Galantamine
Effect of cholinesterase inhibitors on memory
Don’t restore it
Prevent rapid loss of memory.
Long term effect of cholinesterase inhibitors
Delay nursing home placement by 1 year.
Drugs increase risk of falls in elderly
Benzodiazepines
Diphenhydramine
Phenytoin toxicity
Nystagmus
No coordination
Ataxia + slurred speech
Mental confusion
Butemporal heminopsia indicates?
Lesion in optic chiasm
What’s picks disease
Frontotemporal dementia
Picks disease / frontotemporal dementia classic
Personality changes
Lack of judgment
Disinhibition
Memory intact 1st then deteriorates.
Dx fronto-temporal dementia
Wide gyri + narrow sulci (knife like)
Atrophy of frontal + temporal lobes.
When dose postherpetic neuralgia start?
3-6 mo after herpes zoster
How to decrease risk of post herpetic neuralgia?
Antiviral Rx w/in 72 HR
Amitriptyline Rx during infection.
GBS classic
1-3 weeks after infection Ascending weakness No reflexes Spared sphincter Resp paralysis = intubation
LP in Sub arachnoid hemorrhage?
Xanthochromia
WBC:RBC >1:1000
Syncope + exercise =
Cardiac output problem
i.e. Aortic stenosis
Vasovagal syncope classic
Associated with unpleasant event
Heat, hunger, blood loss, pain
Atrial myxoma syncope classic
Related to bending or lying down drone seated position
Turning over in bed
Essential tremor Rx
Primidone (older pts)
Propranolol (younger)
Lewy body dementia classic
Hallucinations Vivid dreams Sleep disorders Day time sleep Abnormal clock drawing (visuospatial deficit)
Dx seizures
EEG
Mode of inheritance in Huntington?
AD
Risk of disease in child of affected parent
50%
Causes of vertigo
Peripheral nerve Vestibular system (CNS)
Physiological vertigo
With head extension
Height vertigo
Following a spin
Pathological vertigo
Benign paroxysmal positional vertigo
Meniere’s
Vestibular neuritis
Acoustic neuroma
Vascular lesions
Differentiate central from peripheral vertigo?
Nystagmus persists during visual fixation = central.
No tinnitus = central.
Vertigo + nystagmus disappears with visual fixation?
Peripheral vertigo
Heatstroke def
Body temperature > 41 + neuro Sx
Esp. Confusion
Sx of multiple sclerosis
Oculomotor Sx Parastheaia Weakness Spastic Urinary incontinence
Horner syndrome
Miosis (small pupil)
Ptosis (drooping)
Anhidrosis
Cause of Horner syndrome
Interruption of sympathetic nerve
What dementia is cannot be treated?
Creutzfeldt-Jakob
Most common presentation of Parkinson’s
Resting tremor
Pallor of optic disk in multiple sclerosis
Optic nerve disease
What’s status epilepticus?
Seizures continuous with loss of consciousness > 20-30 min.
Rx of status epilepticus?
- ABC
50ml bolus 50%D
100mg thiamine - Benzodiazepines (0.1-0.5 mg/kg lorazepam IV) wait 5 min
- Fos phenytoin 15-20 mg 2x
- Phenobarbital 15 mg/kg
- GA + muscular block 1st (succinylcholine)
Maximum dose of morphine
No top dose.
Dx of post herpetic neuralgia
TCA: amitriptyline, noretriptyline.
Anticonvulsant: gabapentin.
Opioids: morphine or tramadol
Carbamazepine in post herpetic neuralgia
Not effective
Migraine prophylaxis
BB
CCB
Anticonvulsants: vampiric acid, topiramate, gabapentin
TCA: amitriptyline
Feature of temporal lobe epilepsy
Memory impairment
Aura
Deja vu
Rising epigastric sensation
Occipital lobe seizure
Visual hallucinations
Seizure vs pseudo-seizure
Seizure: Open eye High prolactin after seizure Tongue bite Postictal confusion Aura
Dx of Parkinson’s
No test = if must PET CT
Response to Rx
Most effective Rx in Parkinson’s
Levodopa
Long-term SE of levodopa
Fluctuations
Dyskinesia
Which has more SE in Parkinson’s:
Levodopa or dopamine agonists?
Dopamine agonists more SE
Uses of ginkgo biloba?
Delaying dementia > tinnitus
1st line prophylaxis in migraine
BB + TCA
Contraindication to using BB in migraine prevention
Asthma
CHF
Normal pressure hydrocephalus triad
Wacky, wet, wobbly.
Mental impairment
Urinary incontinence
Gait (broad-based shuffling)