(3_3) Neurology in 1 week Flashcards
What are the main features of pseudotumor cerebri?
Female, double vision, headache, papilledema, CN VI palsy, CT/MRI normal, LP shows high opening pressure
Neurology Overview Map
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What is the one test that generally all patients with vertigo should have?
MRI of the auditory canal
What are the causes of vertigo?
Meniere’s disease (tinnitus, vertigo & hearing loss), benign positional vertigo, acoustic neuroma, perilymph fistula and vestibular neuronitis
What is the treatment for BPV or vestibular neuronitis or labyrinthitis?
Meclizine
What is the treatment for Meniere’s disease?
Salt restriction and diuretics
How do you differentiate Meniere’s disease and labyrinthitis?
Meniere’s is chronic and labyrinthitis is acute but both have tinnitus, hearing loss and vertigo
What are the main features of acoustic neuroma?
Tinnitus, hearing loss, vertigo and ataxia
Types of dizziness/ vertigo
“Dizziness/Vertigo (6)
1) Acoustic neuroma
2) Benign positional vertigo
3) Labyrinthitis
4) Meniere’s disease
5) Perilymph fistula
6) Vestibular neuritis
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What are the main features of Wernicke encephalopathy and Korsakoff psychosis?
Chronic alcohol use, confusion, confabulation, ataxia, nystagmus, gaze palsy and memory loss
How do you treat Wernicke Korsakoff - psychosis?
B1 before glucose (if glucose is given first B1 may be used for glucose metabolism)
Which test is usually done before LP in CNS infection?
CT
Neurology Map
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What are the indications of CT before LP?
Papilledema, seizure, altered level of consciousness, focal neurological deficit, history of CNS diseases and significant delay in lumbar puncture performance
Types of CNS infections
CNS Infections (11)
1) Brain abscess (PML, Neurocysticercosis, PRES)
2) Encephalitis
3) Infection
1-Cryptococcus
2-Listeria
3-Lyme disease
4-Rocky Mtn Spotted fever
Meningitis
5-Amoebic
6-Bacterial
7-Neisseria
8-TB meningitis
9-Viral meningitis
What do you do in CNS infection before doing CT and LP?
Do culture and start antibiotics
What is the best initial test for meningitis?
CSF cell count; if thousand neutrophils then start ceftriaxone + vancomycin + steroids
What are the main features of CSF analysis?
G stain ( 60% positive), glucose ( must be <60% of blood level), protein (if normal bacterial meningitis is ruled out and cell count
CSF Analysis
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What bacteria are seen on G stain of CSF?
Pneumococcus, Neisseria, Hemophilus and Listeria
What are the main features of Cryptococcus meningitis?
CD4 < 100 India ink is the best initial test Cryptococcus Ag testing is the most accurate test
How do you treat Cryptococcus meningitis?
Amphotericin followed by life time fluconazole unless CD4 is raised
What are the main features of Rocky Mountain spotted fever?
Rash on wrist and ankle, fever before rash, serology and treatment is doxycycline
What is the treatment for TB meningitis?
RIPES: RIPE ( rifampin, INH, pyrazinamide and ethambutol) and steroids; RIPE is continued for a year