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Opt 637 CNS Exam 1
Dr Smith Lecture 7
48
Medical
Graduate
09/16/2011

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Cards

Term
What is an early sign of MS?
Definition
numbness and tingling
Term
What are signs of MS?
Definition
numbness and tingling

fatigue

muscle weakness

ataxia

dysmetria

labile mood

mental disturbance

Lhermitte's sign
Term
What is a nearly universal sign of MS?
Definition
All pt's will complain of fatigue and muscle weakness
Term
What does labile mean?
Definition
unstable
Term
What is Lhermitte's sign?
Definition
If a pt tries to touch their chin to their chest, they will get an 'electric shock' sensation going down their leg.
Term
What are the four presentation patters of MS?
Definition
Relapsing-Remitting

Secondary-Progresive

Primary-Progressive

Progressive-Relapsing
Term
What % of MS pt's show a relapsing-remitting presentation pattern?
Definition
80.00000%
Term
If MS is untreated, how long before it will progress from relapsing-remitting to secondary progressive?
Definition
10 years
Term
What % of MS pt's will go onto secondary progressive presentation even with tx?
Definition
95.00000%
Term
What is the most common initial presentation of MS in men?
Definition
Primary progressive
Term
What is the most common initial presentation of MS in women?
Definition
Relapsing remitting
Term
What is generally comorbid with a primary progressive form of MS?
Definition
spinal column MS
Term
If a pt is older at the time of dx, what is a more common presentation pattern for MS?
Definition
primary progressive
Term
What is the least common MS presentation pattern?
Definition
Progressive-Relapsing
Term
What are methods of dx'ing MS?
Definition
Imaging (MRI w/ FLAIR)

Electrodiagnosis (VECP)

Test CSF oligoclonal bands
Term
What is MS oligoclonal band testing?
Definition
Ab's are tested for in the blood and CSF. If they present in only the CSF, then this suggests that the immune response is in the CNS
Term
What is the currently preferred imaging test for MS?
Definition
FLAIR MRI; it picks up the most lesions of any of the image tests
Term
What is VECP?
Definition
test for MS by testing conduction velocity in the optic nerve
Term
What are tx for MS trying to accomplish?
Definition
Treat the symptoms, as the dz itself cannot be reversed or cured.
Term
What are drug tx for MS symptoms?
Definition
Tx for MS:

Pemoline or amantadine for fatigue

Diazepam or tizanidine for muscle spasticity

Water and fiber for constipation

Amitriptyline for depression

Corticosteroids during severe attack: IV methylprednisolone
Term
What is a corticosteroid tx's for MS?
Definition
IV methylprednisolone for 3-8 days
Term
What is used to treat relapsing-remitting MS?
Definition
interferon
Term
When should interferons be started in MS tx?
Definition
The earlier the better
Term
What is Interferon Beta1a drug Avonex used for?
Definition
MS tx, weekly intramuscular injection
Term
What is Interferon Beta 1b drugs betaseron and Extavia used for?
Definition
daily subcutaneous injections
Term
What is Interferon Beta1a drug Rebif used for?
Definition
Subcutaneous injections 3x per week
Term
What does interferon tx reduce in MS pt's?
Definition
prevents relapses and new plaque formations
Term
What is Glatiramer (Copaxone)?
Definition
Resembles myelin basic proteins, so tricks immune system to attack them instead.
Term
How is Glatiramer administered?
Definition
daily subcutaneous injections
Term
What is oral fingolimod?
Definition
First oral drug for RRMS

Traps T cells in lymph nodes to prevent migration to the CNS
Term
What are SE of oral fingolimod?
Definition
increased risk of cancer and infection

Can cause macular edema
Term
How often should MS pt's on oral fingolimod have an eye exam?
Definition
Every 3-4 months to check for macular edema
Term
What is natalizumab?
Definition
MS drug that is used only with very strict guidelines due to Progressive Multifocal Leukoencephalopathy SE that is 100% fatal
Term
How is Natalizumab administered?
Definition
IV infusion q 4w (once a month)
Term
What is the mechanism of Natalizumab?
Definition
blocks inflammatory cells from entering brain and spinal cord
Term
What are SE of natalizumab?
Definition
hepatotoxicity

progressive multifocal leukoencephalopathy
Term
What is a curious SE of mitoxantrone?
Definition
Urine and sclera take on a blue color
Term
What is mitoxantrone?
Definition
immunosuppressor used to tx MS
Term
How is mitoxantrone administered?
Definition
IV every 3 months
Term
what are risks of mitoxantrone use?
Definition
cardiomyopathy and myelopsuppression, so only given for 2-3 years
Term
What is cyclophosphamde?
Definition
Used to treat refractory MS which is resistant to tx.
Term
What are statin drugs used for in MS?
Definition
Reduce inflammation
Term
What are advantages of statin drugs for MS tx?
Definition
Less cost than other tx's, oral administration
Term
What is NeuroVax?
Definition
A potential future MS vaccine meant to induce immune response against the harmful, misdirected T-cells that cause MS
Term
What is Recombinant T-cell receptor ligand?
Definition
Future MS tx, attaches onto pathogenic T-Cell, causing a 'boat anchor' effect where the cell is then too big to enter the CNS
Term
What is hyaluronic acid inhibition used for?
Definition
To stimulate oligodendrocytes to maturity to help preserve myelin in MS tx, this will preserve existing myelin
Term
What are monthly steroids being tested for?
Definition
Potential use as future MS tx
Term
What is testosterone gel being tested for?
Definition
As a future MS tx in men with the RRMS form.
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