UW 1 Flashcards
central cord syndrome - etiology, definition
hyper-extension injuries in elderly with pre-existing degenerative changes in cervical spine
- damage in corticospinal tracts and decussating fibers of the lateral spinothalamic –> weakness in upper extremeties, maybe loss of pain and Q
hypertensive encephalopathy - acute hemorrhage on CT
no
MCC of intracerebral hemorrhage in children
cerebral AV malforamation
sub hemorrhage - complications
- rebleeding (1st 24h)
- vasospam (after 3 days)
- hydrocephalus/ increased ICP
- seizures
- hyponatremia (SIADH)
sub hemorrhage - treatment
angiographic procedure to stabilize anerysm by coilling +/or stenting (endovascular therapy)
2. nimodipine
clinical features of corenal abrasion - etiology
- trauma (eg. fingernails, paws, or foregin bod, wood, glass, paper) lodging under the lid
- contact lens
- spontaneous (no obvious foregin body or injury)
clinical features of corneal abrasion - clinical presentation
- severe eye pain due to trigeminal nerver sensory innervation (excpet in patients with V dysfunction due to tumor, trauma, prior VZV)
- possible sensation of foregin body on the eye
- photophobia with reluctance to open
clinical features of corenal abrashion - evaluation
- penlight test to document papillary function + inspect for foregin body
- visual acuity (referral if decreased)
- fluorescein examination after above test to show staining defect
trigeminal neuralgia bilaterally
MS
hemorrhagic stroke after ischemic stroke - when
within 48h –> emergency head CT
atrophy of lenticular nucleus - disease?
wilson
CN III - area of parasympathetic vs motor fibers
parasym: out
motor: central
craniopharyngioma - age
mc children but 50% in adults
sellar masses - types
- benign tumors: pituitary (MC), cranipharyngioma, meningioma, piticytoma (low grade glioma)
- malignant:
- 1ry (germ cell, chordoma, lymphoma,),
- metastatic (eg. lung, breast)
MS - LP (useful?)
only if diagnosis from clinical and MRI is not clear
MS exacerbation - plasma exchange?
only if does not response to steroids
non exertional stroke
affects individuals at the extremes of age incapable of obtaining adequate fluids and removing themselves from a hot environment
heat stroke - complications
rhabdomyolysis, renal failure, acute resp distress syndrome, DIC
idiopathic intracranial HTN - diagnosis
MRI +/- MRV
- LP (CSF presure mre than 250)
RF of stroke (most potent?)
- stroke (most potent)
- hypercholesterolemia
- DM
- smoking
- sedentary lifestyle
Argyl roberston
normal react in accommodation but not in light
neurosyhilis develops more rapidly if / treatmetn
HIV (+)
- 10-14 wks penicillin (IV)
dellirium - first step
focused history, physical evaluation, pulse oxymetry ,review of all medication, CBC, serum electrolytes, urinalysis
thearpy of ischemic stroke
- within 3-45h: alteplase
- non in antiplatelets: aspirin
- on aspirin: aspirin + dipyrodamole or clopidogrel
- with AF: long term anticoagulation
- with large ACA occlusion within 24 hours of symptom: mechanical thrombectomy (regardless if received alteplase) –> then aspirin
- with intracranial large artery atheroscleorisis: aspirin + clopidogrel for 90 d –> then aspirin
which antiplatelet can prevent early stroke after a stroke
only aspirin
serious bleeding (eg. intracerebral) due to excess anticoagulation with wafarin - management
stop the drug
- IV vit k
- prothrombin complex concentrate (fresh frozen plasm for 2nd line)
ototoxicity of aminoglycoside
damaging of the cochlear cells and some aminoglycosdes (esp gentamycin) can also damage motion sensitive hair cells in the inner ear to cause selective vsetibular injury (vestibulopathy) without significant ototoxicity
- oscillopsia: sensation of object moving around in the visual field when looking in any direction
cauda equina syndrome vs conus medullaris syndrome
- cauda: bilateral, severe radicular pain, saddle hypo/anesthesia, assymetric motro weakness, hyporeflexia, areflexia, late-onset bowel + bladderdysfunction
- conus: sudden onset severe back pain, perianal hypo/anesthesia/ symmetric motor weakness, hyperreflexia, early bowel + bladder dysfunction
tick-borne paralysis
rapidly progressive ascending paralysis (may be assymetrical), absence of fever sensory abnormalities, normal CSF examination –> ticks must feed 4-7 days and then are typically found on patients after menticulous searching –> removal –> spontaneous improvement
levidopa - involuntarily movements
as a SE after 10 years
TIA vs new MS episode
MS lasts for days to weeks
TIA –> less than 24h
initial treatment of TIA
modifying risk factors: aspirin ,statin,control BP
carvenous sinus thrombosis
facial/ophthalmic venous system is valveless –> uncontrolled infection of the skin can results in cavernous sinus thrombosis –> severe headache, bilateral periorbital edema, CN 3,4,5,6 defects
amaurosis fumax - description
curtain descending
Trihexyphenidyl - mechanism of action / clinical use
anticholinergic
- treatment of Parkinosn, generaly in tyounger patients where tremor is the 1ry symptom
aspirin after alteplase
wait 24 hours
lacunar stroke - mechanism
due to microatheroma formation feand lipohyalinosis in the small penetrating arteries of the brain –> they only affect the internal capsule and result in pure motor hemiparesis
lacunar stroke - RFs
hypertension, hyperlipidema, DM, smoking
Myasthenia Gravis - women vs men
women: 20-30 years old
men: 60-80
Myasthenia gravis - causes of exacerbation
- infection
2, surgery esp thymectomy) - pregannta/childbirth
medications:
medications that can cause exacerbation of Myasthenia gravis
- antibiotics: quinolones, aminoglycosides
- anesthetics
- cardiac meication (beta blokcets, procainaminde)
- otehr: MgSO4, penicillamine
- tapering of immunosuppressive medication
Myasthenia gravis - diagnosis
- beside: edrophonium (Tensilon test), ice pack test
- Acetylocholine receptor antibodies (higly specific
- Ct scan : thymoma
Myasthenia gravis - treatment
- ACEi
- immunotherapu
- thymectomy
brain metastasis - management
- surgical resection is recommended for solitary brain metastasis in patients with a good performance status + stable intracranial disease
- if multiple bran metastases –> whole brain radiation
spastic gait is seen in
UMN lesions (ALS)
Parkinson - gait
hypokinetic gait: general slowing of all motor activity –> stooped posture and walk in series of short, accelerating steps (shuffling gait)
spinal epidural abscess - epidemiology
- S. aureus (65%)
- inoculating sources (distal infection, spinal procedure, IV drugs)
spinal epidural abscess - manifestation
classic triad
- fever (50%)
- focalsevere back pain
- Neurologic findings
essential tremor - 2 other characteristics
- bilateral on hands, usually no legs
- isolated head tremor without dystonia
physiologic tremor
low amplitude (10-12 Hz) not visible under normal conditions
- acute onset with increased sympathetic activity (eg. drugs, hyperthyroidism, anxiety, caffeine)
- usually worse with movement + can involve the face + extremities
- postural tremor (eg. outstretched hands)
aortic valve endocarditis - surgery?
- significant valvular dysfunction –> HF
- persitent or difficult to treat meidically
- reccurent septic embolization
when there is no point for endarterectomy
- 100% occlusion
2. less than 5 years of life expectancy
DDX of myopathy and CK/ESR
- Glucocortcoid: both normal
- Polymyalgia rheumatica: increased ESR
- infl: boh iincreased
- statin: increased CK
- Hypothyroid: increaesd CK
type of alzheimer memory loss
ealry insidious short term memory loss, language decificts, spatial disoreientation, later personality changes
torticollis?
common form of focal dystonia involving the SCM muscle
-iodiopathic or very often medication related (typical antipsychotics, metoclopramide, prochlorperazine)
heart acceleration after atropine administration in dead pearson
no (no vagus)
restless leg syndrome - diagnostic criteria
urge to move the legs and:
- unpleasant sensation in the legs or tother bodyparts (eg. arms) that begin/worsen during inactivity (lying down, sitting)
- unpleasant sensation in the legs that are releived by movement and worsen or occur only at evening/night
- not explained by other disorder