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21 Cards in this Set
- Front
- Back
Immobility effect on orthostasis?
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decreased orthostatic tolerance. can be reduced by sitting up daily
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Immobility effect on plasma volume
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lose 5% of plasma volume within 24 hours; 20% loss after 2 weeks!
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Why the decrease in plasma volume with too much bed rest?
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Increased diuresis because of increased renal blood flow because when supine, 500mL fluid shifts from lower body to upper body (which apparently includes kidneys)
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Disuse atrophy--lose what percentage of muscle strength per day?
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1-3% muscles strength lost per day
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When is muscle wasting the most?
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first 10 days of bedrest. this is result of reduced protein synthesis.
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Effect of training on disuse atrophy on gene expression level?
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certain gene expression upregulated with disuse atrophy after 2 weeks immobitility; one day of exercise decreased expression back to normal
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Common effect of immobility on:
1) neck 2) shoulders 3) forearms 4) fingers |
1) neck flexion
2) shoulders internally roated 3) forearms pronated 4) fingers flexied |
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Common effect of immobility on (position):
1) hips 2) kness 3) ankles |
1) hips flexed
2) knees flexed 3) ankles plantar flexed |
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What is a PRAFO?
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passive range ankle foot orthosis.
keeps ankles in neutral position |
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What is Wolff's law?
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The density of bone is directly proportional to the stress placed on the bone (ergo: my weight baring bones must be very dense!)
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Effect of immobility GU system?
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hypecalciuria (bone loss); incomplete voiding and urine stagnation (esp in men with BPH!)
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Efect of immobility on GI system?
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acid reflux (LES is relaxed longer); constipation (decreased peristalsis, gravity ain't there to help if supine)
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Why do rehabbists like the commode for bedridden patients?
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improves bladder empyting efficiency, decreases constipation; helps with orthostatic tolerance, weight bearing, use of leg muscles
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Effect of immobility on insulin and blood sugar levels
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immobility--> decreased lean muscle mass--> increased fat %. fat is less sensitive to insulin so need more insulin for managing blood sugar
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Effect of immobility on nerves?
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Usually bedresting with legs in external rotation with puts pressure on fibular head--> peroneal nerve--> foot drop
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Effect of immobility on immune system?
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not much known but thought that there is decreased in lymphocyte responsiveness and number of natural killer cells
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Impairment vs disability
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impairment=abnormality of body part or funciton; disability= unable to perform self care or social roles; impairments often lead to disability (but not necessarily!)
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minimal assistance =?
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patient does 75% of the work
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moderate assistance=?
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patient does 50% of the work
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max assist=?
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patient does 25% ofthe activity
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6 major categories of impairment that are important to a physiatrist?
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pain; weakness; deformity; sensation; incoordination; mind/brain
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