SKIN WOUND HEALING Flashcards
Types of wound healing depending on depth of injury
Epidermal Wound healing
Deep wound healing
What is contact inhibition
A cellular response that causes epidermal cells to stop migrating when they come into contact with each other
Phases of deep wound healing ( Tortora)
Inflammatory phase
Migratory phase
Proliferative phase
Maturation phase
Difference between epidermal wound and deep wound
In epidermal wound, the injury is restricted to the epidermis
In deep wound, injury extends deep into the epidermis
What is involved in the inflammatory phase
A clot forms in the wound and loosely unites the wound edges
Processes involved in the migratory phase
Clot becomes a scab
Epithelial cells migrate beneath scab to bridge the wound
Fibroblasts synthesize scar tissue ( collagen fibers and glycoproteins)
Vascularisation occurs
What tissue is found during the migratory phase of wound healing
Granulation tissue
What is a keloid scar or cheloid scar
It is a scar that extends beyond the boundaries of a wound into normal tissue
Complications of wound healing
Infection
Ugly scar
Keloid and Hypertrophic scar
Incisional hernia and wound dehiscence
Pigmentation of skin
Marjolin’s ulcer
Four components of wound healing
Inflammatory or Lag Phase
Proliferative or Collagen phase
Remodeling or maturation phase
Phase of scar formation
Types of wound closure or suturing
Primary suturing
Wound excision and primary suturing of skin
Wound excision and delayed primary suturing
Secondary suturing
What is primary suturing
Suturing the wound within a few hours following an injury ( ideally 6hrs)
