Compression Flashcards
Compression
A mechanical force that increases external pressure on the body or body parts
Effects of compression
- improves venous and lymphatic circulation
- spreads the edema over a larger area
- limits shape and size of tissue
Edema
Presence of abnormal amounts of fluid in the extracellular tissue space of the body
Indications
- lymphedema
- traumatize edema
- chronic edema
- static ulcer
- arterial insufficiency (intermittent claudicaciones)
- wound healing following surgery (prevent DVT)
- dialysis patient that develop edema in extremities
- swelling from limb amputation
Treatments for edema
- Elevation: assist with lymph flow
- Compression: moves lymph along and spreads the intercellular edema over a larger area to enable more lymph capillaries to work to remove plasma proteins (massage, elastic/static, intermittent)
- Weight bearing exercises: stimulate the venous pump
- Cryotherapy: vasoconstriction
Venous system
Purpose is to bring de-oxygenated blood from the periphery towards the heart
- venous return is facilitated via muscle contraction and opening and closing of venous valves, which creates a pumping action and moves blood from periphery to central circulation
Plasma proteins
Plasma proteins flow out of the venous system due to hydrostatic pressure and flow into vessels due to osmotic pressure
Causes of venous insufficiency
- Treatable conditions
- lack of activity, sedentary lifestyles
- professions which require long periods of standing
- degeneration of venous valves
- inflammation of venous valves (phlebitis)
- venous obstruction (partial vs. complete) - Non-treatable conditions
- CHF
- renal or liver failure
- radiation damage
Chronic venous insufficiency S&S
- Common complaints: tingling, itching, heaviness in legs, cramping
- Color changes: reddish brown
- Skin changes: swelling, flakey, dry skin; pitting edema
- Wounds: irregularly shaped, more superficial, medial aspect of lower leg
- Temperature: normal to touch
Venous insufficiency:
- Aggravating factors
- Alleviating factors
- Treatment options
- Standing, walking, and increased activity; dependen positioning to effects of gravity
- Rest and elevation
- IPC, compression garments, elevation, retrograde massage and activity as tolerated
Potential complications of chronic venous insufficiency
- loss of ROM, pain, and decreased fucntion
- skin contractures, severe deformity of limb
- venous ulceration
- infection (cellulitis)
- amputation (gangrene, necrosis)
- DVT
Arterial insufficiency S&S
- Common omplaints: pain, cramping, P&N, increased with activity
- Color change: bluish, white discoloration
- Skin changes: thing and shiny with loss of hair; decrease or loss of pedal pulses
- Wounds: usually smooth edges, deep and located on lateral aspect of lower leg
- Temperature: cool to touch
Arterial insufficiency:
- Aggravating factors
- Alleviating factors
- Treatment options
- Pain with activity, walking, and pain with elevation (claudicación)
- Alleviating factors: usually alleviated with rest
- Treatment options: maintinaing circulaiton (pharmacological)
Lymphatic system
- the fluids and proteins that accumulate in the intersistial space is circulated by the lymphatic system and flushed out of the body by the kidneys
- homeostasis of the extracellular environment is maintained by the lymphatic system
- lymph vessels also rely on mm contraction and valve opening/closing (no pump)
- lymph nodes are concentrated in the axillary, groin (inguinal), throat and para-aortic arch (near spleen)
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Causes of lymphedema
- low plasma proteins
- removal of lymph nodes
- abnormal vessel disctribution
- decreased activity
- congenital factors
- venous insufficiency
- lymphatic obstruction due to: infection, trauma, neoplasm, radiation rx, surgery, lipedema
Lymphatic insufficiency S&S
- Common complaints: pain, but not specific to activity
- Color changes: none
- Skin changes: pitting edema, which can become hard/fibrotic if prolonged
- Wounds: infection/wounds usually occur suddenly
- Temperature: normal
Lymphatic insufficiency:
- Aggravating factors
- Alleviating factors
- Treatment options
- No specific factors/activities
- ?
- Intermittent pneumatic compression, compression garment (24/7), combined decongestive therapy, lymphatic drainage (specialty massage), keeping active within tolerance
Negative effects of edema accumulation
- increases the distance that the nutrients and oxygen needs to travel to nourish remaining cells in injury area
- physical separation of torn tissue ends = pain and limited joint ROM
- increased recovery time = if persists: limited funciton, infection, mm atrophy, joint contractures, interstitial fibrosis, and reflex sympathetic dystrophy
Compresssion reduces edema
Increases hydrostatic pressure outside of blood vessels, allowing fluid inside the vessels to circulate
Law of Laplace
P = T/R
The pressure applied is inversely proportional to the radius
Effects of compression
- improves venous and lymphatic circulation
- treat and control peripheral edema
- prevents formation of DVTs
- treatment of venous stasis ulcers
- helps shape residual limb before prosthetic fitting
- helps to decrease excessive scar tissue formation
Types of compression
- Intermittent (IPC)
- prevent DVTs
- decrease edema
- prevent and/or treat venous stasis ulcers - Static (elastic wrap/custom fitted elastic garments)
- helps with hypertrophic scar formation
- used in conjuction with IPC between sessions to control and maintain edema reduction
- helps shape a residual limb
- DVT prevention (later)
Compression garments
- pressure ranges 10-50mmHg
- hypertrophic scar prevention: 20-30mmHg
- control LE edema: 30-40mmHg