Neuro Flashcards
test to measure neural tube defect while pregnant
AFP -> 16th to 18th week
acetylcholinesterase
drugs that antagonize folic acid
trimethoprin carbamazepine phenobarbital phenytoin primidone
downward herniation of medulla and cerebellar tonsils through foramen magnum
pooling of secretions
vocal cord paralysis
stridor
chiari crisis
encephalocele cleft lip and palate microcephaly microphtalmia abnormal genitals polycystic kidneys polydactyly
meckel gruber
absent cerebral convolutions
lissencephaly
presence of unilateral or bilateral clefts within cerebral hemispheres
schizencephaly
presence of cysts in brain
porencephaly
most common location porencephaly
near sylvian fissure
porencephaly assoc with
maternal cocaine maternal ab trauma protein C factor V leiden von willebrand perinatal alloimmune thrombocytopenia
female
agenesis of corpus callosum
chorioretinal lacunae (punched out lesions in pigmented layer of retina)
infantile spasms
aicardia syndrome
abnormal enlargement of occipital horns
colpocephaly
colpochephaly assoc with
agensis of corpus callosum
defective formation of prosencephalon
forebrain structures affected
holoprosencephaly
sucking jaw movements with eye blinking
marcus gunn phenomenon
paralysis of abducens nerve CN 6
mobius syndrome
Limitation of abduction (outward movement) of the affected eye
duane retraction syndrome
autosomal recessive underdeveloped cerebellar vermis molar tooth sign hypotonia ataxia apnea
joubert syndrome
scaphocepahly cleft lip/palat syndactyly of second and third toes upturned nose CHD ambiguous genitals agenesis of corpus callosum decreased cholesterol levels autosomal recessive
Smith–Lemli–Opitz syndrome
CSF rate
20ml/hr
amount of csf
50ml in infant
150ml in adult
Incidence 1 in 50,000 live births
Round facies, prominent epicanthic folds, low-set ears, hypertelorism, characteristic cry No specific neuropathology
cri du chat
Ptosis, scaphocephaly, inner epicanthic folds, anteverted nostrils Low birthweight, marked feeding problems
Smith-Lemli-Opitz
Small for dates, petechial rash, hepatosplenomegaly, chorioretinitis, deafness, mental retardation, seizures Central nervous system calcification and microgyria
CMV
Growth retardation, purpura, thrombocytopenia, hepatosplenomegaly, congenital heart disease, chorioretinitis, cataracts, deafness
Perivascular necrotic areas, polymicrogyria, heterotopias, subependymal cavitations
rubella
Purpura, hepatosplenomegaly, jaundice, convulsions, hydrocephalus, chorioretinitis, cerebral calcifiation
toxoplasmosis
Growth retardation, ptosis, absent philtrum and hypoplastic upper lip, congenital heart disease, feeding
problems, neuroglial heterotopia, disorganization of neurons
fetal alcohol
Growth delay, hypoplasia of distal phalanges, inner epicanthic folds, broad nasal ridge, anteverted nostrils
fetal hydantoin
premature closure saggital
scaphocephaly
most common craniosynostosis
scaphocephaly
skull that resembles cloverleaf
kleeblattschadel deformity
autosomal dominant syndrome with a highly variable
phenotype
Onset is usually in early childhood and remission is usually
in mid-childhood
It is characterized by multiple febrile seizures
generalized epilepsy with febrile seizures plus
characterized by febrile and
afebrile unilateral clonic seizures recurring every 1 or 2 mo
severe myoclonic seizure of infancy
Dravet syndrome
temporal discharges
loss of speech and verbal agnosia
landau kleffner epileptic aphasia syndrome
unilateral intractable partial seizures
epileptia partia continua
progressive hemiparesis of affected side
rasmussen’s encephalitis
adolescent
myoclonic
drops things often
juvenile myoclonic epilepsy
seen in first three months of life
mental retardation
tonic seizure
burst suppresion on EEG
ohtahara syndrome
infantile spasms that occur in clusters
developmental regression
hypsarrhythmia
2-12mo
west syndrome
2-10yrs old
developmental delay
multiple seizure types
1-2 hz spike and slow waves
lennox gastaut syndrome
treatment of landau kleffner syndrome
valproic acid
prednisone
four processes of seizures
- underlying etiology
- epileptogenesis (kindling)
- epileptic state of increased excitability
- seizure related neuronal injury
DOC focal seizure
oxcarbazepine
carbamazepine
DOC absence
ethosuximide
DOC juvenile myoclonic epilepsy
valproate
lamotrigine
DOC Lennox gastaut
valproate
topiramate
lamotrigine
rufinamide
DOC infantile spasms
ACTH
adrenocorticotropic hormone
DOC west syndrome
ACTH
adrenocorticotropic hormone
side effect of
ACTH
adrenocorticotropic hormone
hypertension electrolyte imbalance infection hyperglycemia glycosuria
DOC Dravet
valproate
benzodiazepines (clonazepam)
DOC benign myoclonic epilepsy
valproate
side effect weight gain
valproate
carbamazepine
side effect gingival hyperplasia
phenytoin
side effect alopecia
valproate
side effect hyperactivity
benzodiazepines
barbiturates
valproate
gabapentin
drug that can cause sjs like syndrome
chinese
HLA B 1502
carbamazepine
side effect rickets
phenytoin
phenobarbital
primidone
carbamazepine
AED to avoid in IEM
valproate
how to give IVIG for west, dravet, lennox gastaut, landau kleffner
2g/kg over 4 consecutive days
then 1g/kg once a month for 6 months
when to d/c AED
2 years seizure free
if benign epilepsy, 6 months
risk factors of seizure relapse after withdrawal
older age
longe duration of epilepsy
>1 AED used
multiple seizure types
apneic
focal motor seizures
fifth day of life
EEG sharp 4-7Hz theta pointu alterant
fifth day fits
benign idiopathic neonatal seizures
cerebellar hemangioblastomas
retinal angioma
autosomal dominant
VHL gene
von hippel lindau disease
PHACE
posterior fossa hemangioma arterial anomalies cardiac anomalies/coarctation eye abnormalitites
dental
ocular
dermatologic (vesicular-> verrucous plaques-> hyperpigmented-> hypopigmented)
cranial
incontinenta pigmenti
pathogen in acute cerebellar ataxia
varicella
coxsakie
echovirus
failure to thrive, photosensitivity, intermittent ataxia, nystagmus, and tremor
autosomal recessive
pellagra like
hartnup
steatorrhea fialure to thrive acanthocytosis ataxia retinitis pigmentosa decreased serum cholesterol and TG
abetalipoproteinemia
or
Bassen kornzweig
ataxia strabismus telangiectasia recurrent sinopulmonary infection low igA igG igE
ataxia telangiectasia
malignancy assoc with ataxia telangiectasia
leukemia
lymphoma
hodgkin
brain tumor
autosomal recessive progressing ataxia explosive dysarthritic speech pes cavus scoliosis decreased DTR and vibratory involve spinocerebellar tracts , dorsal column of spine, cerebellum, medulla
vit E and co q10 slows progression
friedrich ataxia
dance like
darting tongue
milkmaid grip
chorea
chorea disappears with
sleep
chorea increases with
stress
clinical hallmark of sydenham chorea
emotional lability
hypotonia
chorea
tx for sydenham chorea
valproate
carbamazepine
dopamine receptor antagonist (haloperidol)
tremor
feature of cerebellar disease
intention tremor
tx of tremor
propranolol primidone (barbiturate)
excess deposition of copper in liver, brain
progressive basal ganglia disease
choreoathetosis
parkinsonism
wilson disease
excess iron deposition in globus pallidus and substantia nigra
“eye of the tiger” sign -> edema and necrosis of globus pallidus
autosomal recessive
pantothenate kinase associated neurodegeneration
or
hallervorden spatz disease
seen at 1st mo of life, resolve by 3 yrs
torticollis
irritability
ataxia
benign paroxysmal torticollis of infancy
tx for generalized dystonia
trihexyphenidyl
anticholinergic
arm more involved than leg
hadn preference at early age
cerebral palsy
spastic hemiplegia
commando crawl/rudder
uses arms more in crawling
periventricular leukomalacia
cerebral palsy
spastic diplegia
CP from kernicterus
athetoid cp
- recurrent strokelight episodes with hemiparesis
- lactic acidosis
- seizure
MELAS
mitochondrial myopathy encephalopathy lactic acidosis and strokelike episodes
progressive myoclonic epilepsy mitochondrial myopathy ataxia nystagmus dysarthria elevated lactate ragged red fibers in muscle biopsy
myoclonus epilepsy and ragged red fibers (MERRF)
feeding and swallowing problems delayed motor and language pyramidal signs weakness hypotonia ataxia nystagmus
leigh disease
or
subacute necrotizing encephalomyopathy
triad: 1. progressive external ophthalmoplegia 2. onset before 20yr old 3. pigmentary retinopathy PLUS ONE: heart block, cerebellar syndrome, CSF protein >100mg/dl
can be associ with endocrine problems
kearns sayre
congenitally infected arrest in brain growth dev delay weak pyramidal tract signs seizures
hiv encephalopathy
mood or personality change
seizure
dyskinesia
sleep disturbance
anti NMDAR encephalitis
peroxisomal disorder cerebral pachygyria progressive loss of hearing and vision high forehead, hypoplastic supraorbital ridges, epicanthal folds, midface hypoplasia, and a large fontanel hepatomegaly renal cysts
zellweger syndrome
or
cerebrohepatorenal syndrome
defect galactocerebrosides B galactosidase excessive crying hyperpyrexia rigidity blindness deafness demyelinating disease
krabbe
lorenzo's oil (glyceryl trioleate and glyceryl trieucate) tanning without sun exposure ataxia swallowing disturbance adrenal insufficiency inflammatory demyelinating disease boy
adrenoleukodystrophy
x linked recessive deficient copper chubby cheeks, friable hairs severe mental retardation failure to thrive hypotonia generalized myotonic seizures
menkes disease
kinky hair disease
regression of language and motor tremor ataxic gait repetitive hand movements autistic Generalized tonic clonic seizure
rett syndrome
measles aggressive behaviour impaired cognitive Generalized tonic clonic seizure choreathetosis
subacute sclerosing panencephalitis
relapsing remitting course of episodes separated in time and space
demyelinating
multiple sclerosis
hemiparesis optic neuritis focal sensory loss ataxia diplopia dysarthria bowel/bladder dysfxn discrete lesions on periventricular white matter on MRI
multiple sclerosis
treatment of multiple sclerosis
MPPT
pathogens associated with ADEM
influenza ebv cmv varicella enterovirus measles, mumps, rubella herpes mycoplasma pneumoniae
post vaccination ADEM
mmr jap b rabies smallpox dpt flu
lethargy fever headache vomiting encephalopathy visual loss ataxia motor/sensory deficit bladder/bowel dysfxn
MRI: swelling and variable enhancement within white and gray matter
ADEM
acute disseminated encephalomyelitis
tx ADEM
MPPT
then oral steroids
leading cause of acquired brain injury
artreial ischemic stroke
leading cause of term born cerebral palsy
congenital hemiplegia
perinatal stroke
virchow triad
- Hypercoagulability
- Hemodynamic changes (stasis, turbulence)
- Endothelial injury/dysfunction
tx strep meningitis
10-14 days
3rd gen ceph or penicillin
add Vanco if resistant
tx n. meningitidis meningitis
5-7 days
penicillin
tx hib meningitis
7-10 days
repeat LP in mengitis done for
neonates if indicated
gram negative meningitis
B lactam resistant strep meningitis
csf should be sterile after
24-48 hours after initiation of tx
tx gram (-) meningitis
3 weeks
or at least 2wks after csf sterilization
dexamethasone for __ meningitis
Hib
most common sequelae in bacterial meningitis
sensorineural hearing loss
chemoprophylaxis for neiserria meningitidis
rifampin 10mkdose q12 x 2 days
chemoprophylaxis for hib
rifampin 10mkdose q12 x 4 days
most common cause of helminthic/eosinophilic meningitis
rat lungworm
angiostrongylus cantonensis
emperic tx in brain abscess -unknown cause
vancomycin
3rd gen cephalosporin
metronidazole
emperic tx in brain abscess - otitis media, sinusitis, mastoiditis
vancomycin
3rd gen cephalosporin
metronidazole
emperic tx in brain abscess - penetrating head injury
vanco
3rd gen ceph
emperic tx in brain abscess - cyanotic heart disease
ampicillin sulbactam
OR
3rd gen ceph + metronidazole
tx citrobacter brain abscess neonate
3rd gen ceph + aminoglycoside
tx listeria brain abscess neonate
3rd gen ceph + aminoglycoside + ampicillin
emperic tx in brain abscess - immunocompromised
broad spectrum
amphotericin B
brain surgery for brain abscess not indicated if
<2cm
<2weeks duration
no signs of increased ICP
neurologically intact
surgery of brain abscess indicated if
>2.5cm gas inside abscess fungus identified multiloculated located at posterior fossa
pseudotumor cerebri definition
ICP
>200mm H2O in infants
>250mm H2O in kids
normal CSF picture
central cord syndrome
upper ext weakness (proximal first then distal)
syringomyelia
brown sequard syndrome
ipsilateral weakness, ataxia, spasticity
contralateral loss of pain and temperature
SCIWORA
spinal cord injury without radiographic bone abnormalities
injury T12 - L1
loss of sphincter control (urinary/rectal)
flaccid
sensory loss
conus medullaris syndrome
lower motor neuron signs in upper extremity
upper motor neuron signs in lower extremity
bladder dysfxn
loss of sensation caudally
upper extremities are weaker
central cord syndrome
motor and sensory deficit dysfxn in spine
urinary retention first, then incontinence later
weakness first, then spasticity after
CSF: minimal PMN, protein mildly elevated, elevated myelin basic protein and immunoglobulin levels
transverse myelitis
weakness proximal > distal
myopathy
weakness distal > proximal
neuropathy
intact tendon stretch reflex
myopathy
decreased tendon stretch reflex
neuropathy
type 1 sma
wernig hoffman
most commonly sampled muscle
vastus lateralis
quadriceps femoris
most commonly sampled nerve
sural nerve
sensory or motor: sural nerve
sensory
myotubular myopathy arrest in
maturation of fetal muscle in the myotubular phase 8-15weks AOG
X-linked recessive disorder characterized by congenital cataracts, hypotonia, intellectual disability, proximal tubular acidosis, aminoaciduria, and low-molecular-weight proteinuria
oculocerebral syndrome
Lowe syndrome
floppy infant prone to malignant hyperthermia (dantrolene)
central core myopathy
muscle biopsy of duchenne
endomysial connective tissue proliferation
scattered degenerating and regenerating myofibers
mononuclear infiltrations
muscles do not hypertrophy
contractures and wasting in scapulohumeralperoneal distribution
absent myotonia
cardiomyopathy
emery dreifuss muscular dystrophy
facial wasting inverted V shaped lip generalized muscle wasting myotonia slow gastric empyting/peristalsis heart block endocrine problems (hypothy, adrenal insuff, diabetes) low igG cataract
myotonic muscular dystrophy
diagnosis of myotonic musclular dystrophy
DNA analysis CTG repeat
kids that looks like body builder
myotonia congenita
or
thomsen disease
juvenile spinal muscular atrophy
kugelberg welander disease
prominent scapular winging in infants
facioscapulohumeral muscular dystrophy
or
Landouzy - Dejerine disease
factors that precipitate hypoK periodic paralysis
- heavy carb meal
- emotional stress
- insulin
- epinephrine
- hyperaldosteronism
- hyperthyroidism
- amphotericin B
- licorice
triad:
- (micrognathia), low-set ears, and an abnormal curvature of the fingers called clinodactyly
- periodic paralysis
- potentially fatal cardiac ventricular ectopy (with long QT)
andersen tawil syndrome
floppy infant administration of general anesthetic fevere muscle rigidity metabolic and respiratory acidosis serum CK elevated 35, 000 acute tubular necrosis myoglobinuria
malignant hyperthermia
small cell lung cancer
myasthenia gravis
adult
eaton lambert
EMG in myasthenia gravis
decremental response in repeated stimulation
clinical test for myasthenia gravis >2yrs old
edrophonium (short acting cholinesterase inhibitor)
clinical test for myasthenia gravis used for <2yrs old
prostigmine methylsulfate (neostigmine) IM
tx myasthenia gravis caused by failure to release Acetylcholine
ephedrine
or
diaminopyridine
overdose of cholinesterase inhibitor
cholinergic crisis
myasthenia gravis cannot tolerate
NMJ blocking drugs
succinylcholine and pancuronium
cholinergic crisis
Salivation, Lacrimation, Urination, Defecation, Gastrointestinal Distress and Emesis
neurodegeneration of voluntary muscles
weakness
spasticity
sensory intact
Amyotrophic lateral sclerosis (ALS) OR motor neurone disease (MND) OR Lou Gehrig's disease
stork leg
charcot marie tooth disease
nerves affected early in charcot marie tooth disease
peroneal and tibial nerves
findings in biopsy sural nerve charcot marie tooth disease
onion bulb formation
proliferated schwann around axons
interstitial hypertrophy neuropathy
poison burning paresthesias
arsenic
poison mononueritis complex ( motor neuropathy of peroneal, radial, median nerves)
lead
toxin puffer fish similar to
guillan barre syndrome
autosomal recessive reduced number of unmyelinated nerves (pain, temp, taste, autonomic) fungiform papilae in tongue absent swallowing problem excessive sweating tendon stretch reflex absent bradycardia urinary incontinence
familial dysautonomia
RIley Day
achalasia
alacrima
autonomic dysfunction
allgrove syndrome
landry ascending paralysis
guillain barre
acute external ophthalmoplegia
ataxia
areflexia
miller fischer
csf in guillain barre
protein 2x normal
glucose normal
normal cells
tx for guillain barre
ivig 0.4g/kg/day for 5 days
last function to recover in GBS
tendon reflexes
3 clinical features GBS that predict poor outcome
- intubation
- cranial nerve involvement
- maximum disability at time of presentation
pathogen cause bells palsy
herpes varicella ebv lyme mumps mycoplasma
manifestation of bells
paretic upper and lower face
taste anterior 2/3 affected
unable to close eye
NO paresthesia
tx bells palsy
prednisone 1mg/kg/dose x 1 wk then taper