Multiple Sclerosis Flashcards
Chronic, progressive, degenerative, autoimmun disorder that affects the myelin sheath and conduction pathways of the CNS
Multiple Sclerosis
Onset: (Multiple Sclerosis)
20-50 yo
Gender (Multiple Sclerosis)
Women 2x Risk
Patho (Multiple Sclerosis)
T-cells: activated from systemic circ., enter CNS & Stay→ chronic inflammation–> demyelination, scarring, axon damage
demyelination (Multiple Sclerosis)
damage to oligodendrocytes
scarring (Multiple Sclerosis)
proliferation of astrocytes
axon damage (Multiple Sclerosis)
impulses are totally blocked (final)
gliosis
sclerosis
Optic Nerve (CN 2): (Multiple Sclerosis)
Visual disturbances
Acoustic Nerve (Multiple Sclerosis)
Tinnitus, Vertigo,Dysarthria (Speech), dysphagia (Swallowing)
damage to spinal cord (Multiple Sclerosis)
Bowel/bladder function loss
Lhermitt’s Sign:
specific pain, electric shock that moves from the spine to the legs, occurs with neck flexion
Relapsing Remitting: (Multiple Sclerosis)
85%, Acute attack w/ remission & relapse
Secondary Progressive: (Multiple Sclerosis)
- Begins as relapsing remitting
* Progressive between flares
Primary Progressive: (Multiple Sclerosis)
Non-distinct flare, continues to progress, never relapses (mountain)
Progressive relapsing: (Multiple Sclerosis)
- Progressive from onset
- Clear relapses
- Distinct flares, continues to progress, never relapses
Dx: (Multiple Sclerosis)
No definitive tests
***MRI most distinctive, will see gliosis
Evoked Potential)Testing: Nerve Transmission speeds
Drug Therapy: (Multiple Sclerosis)
Interferons (Avonex, Betaseron, Rebif) Copaxone Novantrone (IV) Gilenya Tysabri
blockT cells & prevent immune cell activation; found to decrease flare-ups by 30-40% (MS)
• Admin: injection only
• SE: flu-like (Tylenol or ibuprofen)
Interferons (Avonex, Betaseron, Rebif)
Copaxone
SubQ admin blocks T cells
Tx MS
Gilenya
better then interferon agents
Tx MS
Tysabri:
Binds to WBC (T cells)- prevents myelin damage; NOT a first like tx→ asc with Fatal viral infection
Acute exacerbation treatment
- decrease edema & inflam @ site of demyelination
- ACTH (adrenocorticotropic hormone) IV
- Methylprednisolone (solu-Medrol) IV 1-2 wks
- D/C with prednisone 2-4 wks
Urinary retention: (MS)
Cholinergics (Bethanecol)