HEALING

HEALING

It's the final stage of the response of tissue to injury
Phases
1. inflammatory
2. proliferative
3. remodeling
Depends on
1. type of damaged tissue
2. proliferative ability
3. nature of disruption
Types
1. primary
  1. in clean incised wounds,good apposition of edges
    1. surgical incisions
2. Secondary
  1. in open wounds, significant tissue loss
    1. necrosis , infection
  2. features
    1. large gaps
      1. more
        blood
        fibrin
        necrotic debris
        intense inflammatory reactions
    2. patent contraction of size
      1. due to myofibroblasts
    3. scaring
      1. due to granulation tissue
    4. chronic inflammation
Complications
1. contracture
  1. thickening & shortening of collagen bundles
2. proud flesh
  1. excess formation
3. keloid
  1. thick interlacing bundles
    1. swelling
Systematic Effects
1. nutrition
2. metabolic status
3. circulatory status
4. hormones
Local Effects
1. infection
2. mechanical factors
3. foreign bodies
4. wound size
5. wound type
6. wound location
Hemorrhage
1. arterial
  1. spurting blood
  2. pulsating flow
  3. bright red color
2. venous
  1. steady slow flow
  2. dark red color
3. capillary
  1. slow even flow
skin wound classifications
1. friction blister
2. abrasion
3. bruis
4. laceration
5. avulsion
6. incision
7. puncture
8. amputation
9. crush injury
skin
1. largest organ
2. protective function
3. compasition
  1. epidermis & stratum corneum
  2. dermis
    1. contains capillary network
  3. subcutaneous layer
    1. hypodermis
    2. adipose layer

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