Principles of wound care - wickUP - HOME...
Transcript of Principles of wound care - wickUP - HOME...
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Principles of wound care
Prof Mokoena 2013
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GOALS OF LOCAL WOUND TREATMENT
• Wound bed preparations • Convert to surgically clean wound • Debride necrotic tissue • Treat / prevent local infection • Protect surrounding tissue • Protect wound against trauma eg with splints • Absorb excess exudate • Drain excess fluid eg blood or pus
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ASSESSMENT OF THE WOUND
• Assess general condition of patient • Assess local wound - length, breadth and depth - cleanliness or otherwise - vitality of tissues - infection and extent - surrounding tissues
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MANAGEMENT PLAN
Optimise Systemic Condition - nutrition - medication - oxygenation - diabetic control - immune suppression status - infection Rational local treatment
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Treatment of a wound
• Best treatment is prevention – Surgical incision properly placed and
executed – Use appropriate prophylaxis and correct
technique – Care of ischaemic and diabetic feet – Care of pressure areas including eg
correct intra-op positioning and protection
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DECONTAMINATION OF WOUNDS
• Copious irrigation and scrubbing of contaminated wound eg after MVA
• Diversion of excreta eg colostomy
• Control fistula effluent eg use wound management bag or vacuum -assisted closure (VAC) system
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WOUND DEBRIDEMENT
• Mechanical or surgical • Chemical eg aserbine
• Autolytic (moist dressing)
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ANTISEPTIC WOUND TREATMENT
• Do not put into a wound what you would not put into your own eye
• Inorganic halide and alcohols eg chloride and iodine base of antiseptics banned
• Organic antiseptic at correct strength eg Povidone Iodine
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IDEAL WOUND DRESSING
• Moisture retentive • Perspirative • Absorptive • Protective from trauma • Thermal insulation • Microbial barrier • Non-traumatic removal
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MOIST WOUND CARE I
Moist wound heal faster than dry wounds - Winter demonstrated benefit of moist wound
healing in superficial incised wound in 1962! - Dyson et al demonstrated similar benefit in
full thickness accidental lacerations in 1988
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MOIST WOUND CARE II
Moist wound heal faster than dry wounds • Dryness dessicates inflammatory cells and new
epithelium • Moist healing accelerates inflammatory process • Epithelial cells migrate easily across moist wound
surface • Moist environment enables proteolyses of dead
tissue Caveat: Guard against maceration of normal
tissues Dry dressing removes new epithelium on changing
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MONITORING OF WOUND CARE Could care hinder healing - YES • frequent changes of dressing • inappropriate dressing material • Inappropriate antiseptic • dry dressing • too frequent wound inspection
• Take off only if: – Dressing soiled (saturated with moist) – Excessive pain – Surrounding tissue shows excessive inflammatory response – If bleeding present
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PROPHYLAXIS AGAINST INFECTION
General Antisepsis Antimocrobial Application - local (mostly used) - systemic Choice of antimicrobial Therapy
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Choice of wound dressings
• Skin grafts (SSG, full thickness, flaps) • Hydro colloids • Hydrogels • Algenates • Impregnated dressings eg silver/antibiotic • Skin substitutes • Amniotic membrane • Xenograft
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WOUND DRESSINGS
• Films eg Opsite, Tegaderm • Hydrocolloids eg Granuflex, Comfeel • Hydrogels eg Intrasite gel, Elastogel • Foams eg Allevyn • Impregnates eg Adaptic • Absorptive powders or pastes eg Hydrogram
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DRY WOUND DRESSING
• Sticks to wound • New epithilialisation destroyed on removal • Causes pain on changing
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VACUUM ASSISTED WOUND CLOSURE
• Low pressure continuous suction • Indications – High exudate – Discharging fistula – Large dead space
• New device no adequate scientific tests
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Macrophage preparations for decubitus ulcer treatment
• Geriatric decibutal ulcer • Monocytes derived macrophage application • 27% vs 6% healing of conventional methods • Healing faster after macrophage application!
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WOUND DRESSING (I) - FILMS
Composition - semipermeable - polyurethane - copolyester Examples - Op-site - Tegaderm Functions - Mimics Skin - H2O and bacteria “breathes” Indications - Acute Partial or Thickness “dry”
wounds
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WOUND DRESSING (II) HYDROCOLLOIDS
Composition - Hydrophilic colloid particles Examples - Granuflex - Comfeel - Intrasite Function - Absorbant, Debrides by Autolysis, Promotes healing
Protects Indications - Acute or Chronic any thickness
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WOUND DRESSING (III) - HYDROGELS
Composition - 80 % - 99 % H2O linked polymers eg acrilamides, polyethyleneoxide Examples - Intrasite gel Elastogel Functions - Creates moist environment, low absorbancy Indications - Acute or chronic non-exudative
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WOUND DRESSINGS (IV) - FOAMS
Composition - Hydrophic or Hydrophobic polyurethane gel or film
Examples - Allevyn Function - High Absorbency, ‘Debrides,’ “breathes” Indications - Acute or chronic exudative
or slough
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WOUND DRESSING (V) - IMPREGNATES
Composition - Gauze mesh impregnate with moisturizer or antimicrobial
Examples - Adaptic - Biobrane Functions - Promotes healing or anti-
microbial Indications - Acute or chronic partial
thickness minimal exudate
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WOUND DRESSINGS (VI) – ABSORPTIVE POWDERS AND PASTES
Composition - Starch copolymers colloidal hydrophilic particles Examples - Hydrogran Functions - High absorbancy Debrides Indications - Chronic full thickness with copious exudate, slough
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WOUND DRESSINGS (VII) – BIOLOGIC DRESSINGS
Composition - Natural skin / membranes Examples - Amniotic membrane Xenogeneic skin (pig) Function - Biologic cover Indications - Large burns Problems - Infection (not rejection)
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WOUND DRESSINGS (VIII) – WOUND MANAGEMENT BAG
Composition - Oversize “stoma” bag Examples - Hollister Functions - Collection of fistula or hig vol
exudate Indications - Complex wounds with fistula
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Summary
• Assess wound quality – Classify wound – Assess local tissue health, perfusion and sepsis – Correct abnormalities and optimise health
• Assess patient health and quality – Nutrition status – General health status esp. O2 carrying capacity – Immune status esp. HIV/DM – Correct abnormalities and optimize health
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