compression Flashcards
what is limb compression
mechanical agent that inc pressure on limbs - compression-decompression cycle
what are the therapeutic goals of limb compression
improve arterial, venous and lymphatic circulation
exp laplace’s law
inc in pressure = pumping effect
tension = pressure x radius of chamber and is inversely prop to thickness of wall
what are the forms in which compression is applied
stockings, bandages and pneumatic compression
discuss the concept of pneumatic compression
sleeve over limb where air inflates chambers = compression
compare SPC to IPC
SPC - constant pressure; deprives BF to tissues since artery is compresses
IPC - intermittent; on off time or inflates and deflates; pumping effect = venous and lymph circulation
discuss how IPC improves fluid balance and circulation
compressive force facilitates venous BF back to heart and lympahtic drainage to central areas = controls peripheral edema
discuss how IPC prevents DVT
if immob - it can provide adequate BF to prevent accumulation of blood components
BUT DONT USE IF MAY DVT NA
discuss how IPC heal venous ulcers
can heal grade 1 only - since better BF - better healing
relate hydrostatic pressure in interstitial space and extravascular pressure
when hydrostatic psi inc in interstitial space = inc extravascular psi = edema
kaya compression can push back fluid in interstitial space back to BV or lymph veins
when do we use static compression
when there is severe edema = since makapal na talaga need ng static to get through; di na ma ccompress arteries since anlaki tlaga ng edema
discuss how SPC limit size and shape of tissue
compression limits shape and size of edema if static
limiting size and shape of limb from static compression can be used on
residual limb post-amputation
superificial burns
severe edematous limbs
discuss how IPC inc tissue temp
not rlly inc but more of insulator preventing release of heat
or depends on air being pumped if hot or cold
how does IPC control scar formation
if heated air is used it can control scar formation - breaks down the collagen
indications of compression
edema
lymphedema
prevention of DVT
venous stasis ulcers
residual limb shaping after amputation
control of hypertrophic scarring