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BURNS SURGERY

Timing of surgery

  • Immediate

    • Escharotomy​

    • Tracheostomy

  • Early​

    • Early surgery is performed within 72 hours of the burn​

    • Early excision and grafting may produce better results than delayed surgery

  • Intermediate​

    • Indicated for patients in whom the burn depth is difficult to determine at the time of injury​

    • Many intermediate depth burns, particularly in children, can initially be treated conservatively

    • If little sign of healing after 1 week, thy can be excised and grafted

  • Late

    • More than 3 weeks after the burn​

    • Seldom indicated

Burn excision

  • Tangential excision

    • Burn is excised in layers with a skin-graft knife​

    • Excision stops when healthy, bleeding tissue is encountered

  • Fascial excision​

    • Burn excision down to the level​ of the fascia is sometimes indicated in massive burns

    • Can be used to limit bleeding in areas where tourniquet cannot be used

    • Complicated with contour deformities, lymphoedema

Skin grafting (autograft)

  • Skin graft take by:

    • Platelet adhesion​

    • Imbibition

    • Inosculation

    • Revascularisation

  • Meshed-skin grafting

    • Advantages​

      • The size of the donor site is reduced​

      • Haematoma can escape from under graft through gaps in the mesh

      • Meshed graft contour better than non-meshed grafts

    • Disadvantage

      • Honeycomb appearance when healed​

      • Donor site colour mismatch once healed

  • Full-thickness grafting

    • Rarely used as primary cover in acute burns

    • Main indication is in secondary burns reconstruction

    • Advantages

      • Provide a better colour and texture match

      • Less secondary contracture

      • More durable

    • Disadvantages​

      • Less area of graft can be harvested​ because donor site usually requires direct closure

Non-autograft options for skin coverage

  • Used when there is insufficient donor areas for split-skin grafts​

  • Cadaveric allograft

    • Glycerol preserved or cryopreseved at -80°C​

    • Glycerol-preserved skin has longer lifespan​​

    • Cryopreserved skin may contain viable cells

    • May transmit disease

  • Skin substitutes

    • Some contain a dermal substitute which becomes inte​grated into the wound

    • Can be used as a temporary dressing

  • The Alexander technique​

    • Two layers of skin graft​

      • Inner layer made of widely meshed autograft​

      • Outer layer made of finely meshed allograft

  • The Cuono technique​

    • Biopsy taken from unburned skin and sent for cell culture​

    • Allograft applied as a temporising measure

    • Approximately 10 days later, the epidermis is removed and the sheet of keratinocytes is applied

    • The dermal element of the allograft may survive, as graft rejection is primarily mediated by Langerhans cells located in the epidermis

    • Not widely available

Delayed burn reconstruction

  • General principles

    • Prevent formation of contractures with ​occupational therapy - exercises and splinting

    • Give priority to face and hands

    • Adhere to aesthetic units where possible

    • Apply sheet grafts to hands, face and neck

    • Thicker grafts to areas likely to contract, such as the perioral, periorbital and neck regions

    • Apply pressure garments as soon as possible once the skin is stable

    • Follow up childen until they stop growing

  • Surgical options

    • Scar revision​

    • Local flaps

      • Z-plasty​

      • W-plasty

      • V-Y plasty

    • Skin grafts​​

    • Tissue expansion

    • Pedicled or free flaps

Timing of surgery
Burn excision
Skin grating (autograft)
Non-autograft options for skin coverage
Delayed burn reconstruction
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