Musculoskeletal system & Wound Management Flashcards
Clean wounds
Atraumatic and sterile
Clean, contaminated wounds
Minor break in aseptic technique and only minor contamination
Contaminated wound
Recent wound with trauma that has bacterial contamination
Dirty/infected wound
Older wound that is exudative with evidence of bacterial contamination
Open fracture classes
Grade I; small break in skin by bone penetrating
Grade II; soft tissue trauma with the fracture caused by external trauma
Grade III; extensive soft tissue injury with increased communition of the bone
Stages of wound healing
Inflammation
Debridement
Repair/proliferation
Maturation
Inflammation stage of wound healing
Within 5 days of injury
Haemorrhage, vasoconstriction and platelet aggregation initially occur and then within 5-10min there is vasodilation > fibrinogen and clotting as neutrophils, monocytes, fibroblasts endothelial cells and inflammatory mediators are brought to the site
Debridement phase of wound healing
Happens concurrently with inflammation phase and involves WBC entry (neutrophils first) approximately 6 hours after injury which removes ECF debris via phagocytosis. Macrophages are formed within 24-48h of wound occurring and monocytes activate fibroblastic activity stimulating collagen formation and angiogenesis > removal of necrotic tissue, bacteria and foreign material
Repair/proliferation phase of wound healing
Occurs after 5-7 days of initial wound and lasts 2-4 weeks
Angiogenesis, granulation tissue formation and epithelialisation occur. Fibroblasts proliferate and synthesise collagen providing a granulation bed for epithelialisation witch wound contraction evident after 5-9 days
Maturation wound healing phase
Occurs 17-20 days after
Adequate collagen has been deposited, wound contraction and remodelling of epithelium is occurring
Can take years to heal and only achieve 80% of strength
Addressing patients that present with wounds
Stabilise; cover open fractures, stabilise ABC, thoroughly examine patient
Assess and Debridement wounds; decontaminate, create healthy wound bed and promote healing
Broad spectrum antimicrobials (broader spectrum the further it penetrates)
Daily assessment of wounds and further Debridement, bandage changes
Sugar and honey for wounds
Both bactericidal and promote accelerated sloughing of necrotic tissue and formation of the granulation bed
Both osmotic so draw bacteria and debris out of wound
Used in Debridement phase until healthy granulation tissue visible
Change bandage daily or when significant strike through present
Bandage layers
Primary; directly on wounds, determines if adherent or non-adherent bandage
Secondary; padded and aids in absorption of exudates
Tertiary; outermost protective layer
Adherent v. Non-adherent bandages
Adherent: I.e. wet-to-dry
Non-adherent: hydrogels etc
Delayed primary closure
Performed 2-5 days after injury for wounds that have areas of questionable healing, large +- contaminated wounds
Performed once evidence of a healthy granulation bed
Vacuum assisted wound therapy
Set to 75-120mmHg
Improves vascularisation, granulation tissue formation and decreases wound size and volume
Contraindicated; coagulopathy, necrotic wounds, exposed organs/nerves/bones etc, untreated osteomyelitis
Hyperbaric O2 for wound treatment
100% O2 provided under pressure
Increasing O2 to damaged tissues promoting leukocyte oxidative killing of bacteria, reduces oedema and increases nutrient content to the wound
Most common bacteria to wounds
Staphylococcus, streptococcus and e.Coli, enterococcus, proteus, pseudomonas
Bite wounds: clostridium
First degree burns
Superficial and only involve the epidermis
Epidermis will be erythemous and painful to touch
Rapid healing and re-epithelialisation within a week
No wound management required and no systemic effects
Second degree burns
Involve the epidermis and the superficial dermis or may go into deeper dermis
Epidermis will be charred and will slough; plasma leakage will occur and painful or decreased pain sensation if deeper
Hair follicles intact still or not if deeper
May or may not have systemic effects depending on depth
Epithelialisation with minimal scar within 10-21 days unless deeper than scarring and surgical management required