Nuero Part 1 Flashcards
MS def
Inflammation of and destruction of myelin sheath of neurons
Onset 15-45
W>M
Increases with distance from equator
Relapsing - remitting MS
Most common, acute exacerbations followed by full, partial or no revolver of function. Recovery from an attack takes weeks —> months
Primary progressive MS
Characterized by a gradual but steady progression of disability. Common in people who develop the disease after the age of 40
Secondary - progressive MS
Initially begins with replacing remitting MS then evolves into a progressive disease. The progressive part may begin shortly after onset of MS or later
Progressive - relapsing MS
Least common form of disease and is characterizes by steady progressive of disease with acute attacks that may or may not be followed by some recovery. These people have primary progressive initially
Clinical impression of MS
Blurred or double vision , limb weakness, paresthesia, clumsiness, lack of coordination/balance difficulty thinking/ concentrating,
Dizziness, bowel and bladder dysfunction, tremors, speech difficulty
Biggest organs affected of MS
Involves immune attack against the central nervous system .. targeting the brain, spinal cord and optic nerve at the back of the eye
Lab work for MS
CSF - increased immunoglobulins, separation into oliochlonal bands
Evoked Potentials - how long stimuli take to get to the optic nerve
MRI - lesions found in white matter of brain, spinal cord and optic nerves, 1-4 cm in diameter
Management of MS
Treat relapses - IV corticosteroids at onset followed by tapering oral corticosteroids
Manage symptoms
Delay progression to disability
Emotional support
Factors that influence treatment decisions
Stage of disease and amount of recent disease activity
MRI leasion burden and activity
Safety and tolerability profiles of immunomodulating agents
Efficacy of the immunomodulating agents
Tremor - def
Involuntary visible, rhythmic and oscillatory movements of a body part
Physiological or non pathological
Essential - familial tremor - action tremor
Usually undetectable, and to some degree present in everyone
Can involve any muscle group but arm and hand most common
Nuero exam - normal
Enhanced physiological
Characteristics of essential tremor / familial tremor
Head, jaw, throat, fingers
Increases with - fear, fright, anxiety
- caffeine / SSRI, adderall
- nicotine, steroid use
Medications that increase physiologic tremors
Antiarrythmics, antidepressants, antiepileptic, beta agonist, glucocorticoids, mood stabilizers, thyroid hormone ( hypothyroidism), toxins
Essential tremor / FT unique characteristics
Appearance only during movement- ceases up in relaxation
- tremor will slightly increase as target approached
- bilateral
- alcohol can improve the tremor
Enhanced physiological tremors caused by
Steroids, alcohol, hyperthyroidism, hypoglycemia
Treat aimed at correcting underlying problem
Pathological tremors : Cerebellar tremor
Also known as intention tremor
Characteristics
- absent when limbs are inactive ( no resting tremor)
- tremor present with action or movement and increases when closer to target
- abnormal nuero exam
- problems with coordination, cant correct tremor, present along with swinging arms and clumsiness
Cerebellar Tremor - caused by
MS, Stroke, other Cerebellar injury
Parkinsonian tremor
Resting tremor and is coarser , most often unlilateral
Involving fingers, hands, arms, jaw, lips and tongue
Pill rolling tremor
Tremor present when limb is at rest and diminishes with voluntary movement
Excitement and stress will increase tremor
Parkinson Disease - def
Chronic progressive disease
Treatment is aimed at improving function and mobility
PD - cardinal features
Tremors - rest in distal extremities, usually unilateral and tremor disappears with action
Rigidity - increases in muscle tone that can be elicited wen one moved the patient limbs
Bradykinesia - loss of automatic movement and difficulty initiating movement
Levy body dementia
Progressive type of dementia associated with PD
Characterized by fluctuations in concentration, attention, alertness and wakefulness from day to day
Depression, apathy, anxiety and agitation
DX Parkinson’s disease
Looking for sings
- loss of sing of arms when walking, shuffling gait with small septs, flexed posture, masked facial appearance, decrease blinking, overall - depressed look
Hyposmia - inability to smell ( early sign)
No labs, refer to neuro