Burn Wound Healing Process Presentation PDF

Burn Wound Healing Process  Epidermal Healing The epithelial cells stop migration when they are completely in contact with other epithelial cells at the wound margins. This process needs to provided by adequate nutrition and blood supply, or else the new cells will die. ...

Burn Wound Healing Process  Epidermal Healing The epithelial cells stop migration when they are completely in contact with other epithelial cells at the wound margins. This process needs to provided by adequate nutrition and blood supply, or else the new cells will die.  Dermal Healing Scar formation occurs. Scar formation can be divided into: – Inflammatory – Proliferative – Maturation.  INFLAMMATORY PHASE Inflammation begins at the time of injury, ends in about 3 to 5 days. Characterized by: – Redness, edema, warmth, pain, and decreased ROM. blood vessels are ruptured which cause: – Platelets aggregate, and fibrin is deposited →clot formation – Blood vessels contract → decrease blood flow.  INFLAMMATORY PHASE cont… After a transient vasoconstriction (5 to 10 min), a vasodilatation occurs which leads to: 1. increase blood flow to the area 2. increase the permeability of the blood vessels, 3. edema formation 4. leukocytes infiltrate which help to a) Get rid of contamination b)Release chemical that attract fibroblasts into the area.  Treatment Reduce heat,oedema and pain. Prevent infection and disruption of wound. – (immobilization, positioning, splinting)  PROLIFERATIVE PHASE Begins day 3-5 and lasts for 2-6 weeks. This phase start with the formation of granulation tissue contains large numbers of fibroblasts macrophages, collagen, and blood vessels. – Fibroblasts are the cells that synthesize scar tissue in random alignment Angiogenesis continues: – The newly formed blood vessels bring a rich blood supply to the area and encourage further wound healing. Excess granulation tissue may lead to increased hypertrophic scarring and wound contraction occurs.  Treatment Early: positioning and immobilisation Later: gentle stress (splinting,exercise) Reduce oedema and prevent contracture  MATURATION (REMODELING) PHASE Begins week 4-6 and Lasts up to 2 years During the maturation phase – Wound closure – There is a reduction in the number of fibroblasts – Decrease in vascularity due to a lesser metabolic demand – Remodeling of collagen, which becomes more parallel in arrangement and forms stronger bonds. The ratio of collagen breakdown to production determines the type of scar that forms. – Hypertrophic scar may result (keloid). – Scar red and raised progresses to flat pale and pliable. – Scar tissue tightens.  Treatment Optimise function Splinting Positioning Exercise Stretching Strengthening. Garment (pressure)