BURNS SURGERY
Timing of surgery
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Immediate
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Escharotomy​
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Tracheostomy
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Early​
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Early surgery is performed within 72 hours of the burn​
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Early excision and grafting may produce better results than delayed surgery
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Intermediate​
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Indicated for patients in whom the burn depth is difficult to determine at the time of injury​
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Many intermediate depth burns, particularly in children, can initially be treated conservatively
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If little sign of healing after 1 week, thy can be excised and grafted
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Late
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More than 3 weeks after the burn​
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Seldom indicated
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Burn excision
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Tangential excision
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Burn is excised in layers with a skin-graft knife​
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Excision stops when healthy, bleeding tissue is encountered
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Fascial excision​
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Burn excision down to the level​ of the fascia is sometimes indicated in massive burns
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Can be used to limit bleeding in areas where tourniquet cannot be used
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Complicated with contour deformities, lymphoedema
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Skin grafting (autograft)
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Skin graft take by:
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Platelet adhesion​
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Imbibition
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Inosculation
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Revascularisation
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Meshed-skin grafting
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Advantages​
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The size of the donor site is reduced​
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Haematoma can escape from under graft through gaps in the mesh
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Meshed graft contour better than non-meshed grafts
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Disadvantage
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Honeycomb appearance when healed​
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Donor site colour mismatch once healed
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Full-thickness grafting
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Rarely used as primary cover in acute burns
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Main indication is in secondary burns reconstruction
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Advantages
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Provide a better colour and texture match
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Less secondary contracture
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More durable
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Disadvantages​
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Less area of graft can be harvested​ because donor site usually requires direct closure
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Non-autograft options for skin coverage
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Used when there is insufficient donor areas for split-skin grafts​
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Cadaveric allograft
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Glycerol preserved or cryopreseved at -80°C​
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Glycerol-preserved skin has longer lifespan​​
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Cryopreserved skin may contain viable cells
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May transmit disease
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Skin substitutes
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Some contain a dermal substitute which becomes inte​grated into the wound
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Can be used as a temporary dressing
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The Alexander technique​
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Two layers of skin graft​
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Inner layer made of widely meshed autograft​
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Outer layer made of finely meshed allograft
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The Cuono technique​
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Biopsy taken from unburned skin and sent for cell culture​
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Allograft applied as a temporising measure
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Approximately 10 days later, the epidermis is removed and the sheet of keratinocytes is applied
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The dermal element of the allograft may survive, as graft rejection is primarily mediated by Langerhans cells located in the epidermis
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Not widely available
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Delayed burn reconstruction
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General principles
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Prevent formation of contractures with ​occupational therapy - exercises and splinting
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Give priority to face and hands
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Adhere to aesthetic units where possible
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Apply sheet grafts to hands, face and neck
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Thicker grafts to areas likely to contract, such as the perioral, periorbital and neck regions
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Apply pressure garments as soon as possible once the skin is stable
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Follow up childen until they stop growing
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Surgical options
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Scar revision​
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Local flaps
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Z-plasty​
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W-plasty
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V-Y plasty
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Skin grafts​​
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Tissue expansion
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Pedicled or free flaps
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