Neuro Flashcards
PC:
- CONTRA weakness or sensory loss
- homonymous hemianopsia– looking towards side of lesion
- aphasia
MCA
if you are right handed…
L dominant lobe
- handedness
- speech center
PC:
- personality and confusion
- urinary incontinence
- legs> arms
ACA
PC:
- IPSI sensory loss face, 9th, 10th CNs
- CONTRA sensory loss limbs
- limb ataxia
PCA
best initial test for stroke
non-contrast CT
diagnostic tests for stroke
- ECHO- PFO, surgical valve, thrombus
- EKG
- Holter
- carotid doppler– degree of stenosis
tx for haemorrhagic stroke
NO TX
tx for ischaemic stroke less than 3hrs
thrombolytics
tx for ischaemic stroke greater than 3hrs
aspirin
tx for ischaemic stroke greater than 3hrs and already on aspirin
ADD dipyridamole
or SWITCH to clopidogrel
additional tx to add in for stroke
statins!
experimental window for thrombolytics
3-4.5hrs
carotid angioplasty and stenting
NOOOOOOO proven benefit
ALWAYS the wrong answer
% carotid stenosis and tx
less than 50%= no tx
greater than 70%= endarterectomy
PC pseudotumor cerebri
RICP and CN 6 palsy
risk factors for pseudotumor cerebri
- obese young female
- venous thrombosis
- OCP
- vit A excess
dx for pseudotumor cerebri
LP increase pressure
tx for pseudotumor cerebri
- weight loss
2. acetazolamide
tx for cluster headaches
- triptans
- octreotide
- ergotamine
- 100% oxygen, lithium, prednisone= ABORTIVE, not for mgiraines
cluster prophylaxis
verapamil
prednisone
valproate
best preventitive tx for migraines– if 3 attacks/month
propanolol
valproate
tx trigeminal neuroalgia
oxcarbazepine or carbamezapine
trigeminal neuralgia that doesn’t improve with medication
gamma knife surgery
postherpetic neuralgia pain tx
- TCA’s
- gabapentin
- pregabalin
- carbamezapine
- phenytoin
- topical capsaicin
reduce incidence of postherpatic neurlagia
antiherpetic medications
clearly effective treatment for peripheral neuropathy?
NOOOPE
when to do EEG
when tried to exclude all the causes
including CT or MRI
seizures of unclear etiology=
EPILEPSY
treatment for status epileptics
- benzodiazepine
- fosphenytoin> phenytoin
- phenobarbital
- GA
an unresolving seizure tx
NEUROMUSCULAR BLOCKING AGENTS
- succinylcholine
- vecuronium
- pancuronium
what to give before propofol
ventilator– since propofol can stop breathing
when to give anti epileptic drugs after first seizure– few circumstances
- PC= SE or focal neuro signs
- abnormal EEG or lesion on CT
- fam hx of seizures
best tx for epilepsy
NOT CLEAR
which anti epileptic has the fewest side effects
leviracetam (!!! SJS)
best tx for absence seizures
ethosuximide
alcohol withdrawal seizures tx
NOT NOT NOT NOT NOT with anti epileptic drugs
when to stop anti epileptic meds
2 years seizures free
how to check for possibility of seizure recurrence
sleep deprivation EEG
patient with epilepsy, and driving….
recommend find an alternate means of transportation
SAH vs. meningitis
SAH
- more SUDDEN onset
- LOC
best initial test for SAH
non-contrast CT
most accurate test for SAH
LP– xanthochromia
WBC: RBC ratio normal
1: 500
normal= SAH
abnormal= meningitis
why don’t you use contrast for bleeds in brain?
BECAUSE BLOOD= WHITE
mortality rate if have recurrence of SAH
50-70%
tx of SAH
- nimodipine
- embolization (coiling)> clipping
- VP shunt IF hydrocephalus
- seizure prophylaxis
seizure prophylaxis for SAH
PHENYTOIN
if embolization is not one of the choices…
surgical clipping
embolization for SAH is a type of
INTERVENTIONAL RADIAOLOGY
LOSS of all spinal functions, except position and vibration
LOSS DTR’s–> hyperreflexia
anterior spinal cord syndrome
LOSS of contralateral pain and temp
LOSS of ipsilateral vibration and position
brown sequard