Integumentary: Wound Healing Flashcards

1
Q

Types of Tissue Union: Primary

A
  • No major loss of connective tissue
  • Wound is not contaminated
  • Closure within 3-7 days
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2
Q

Types of Tissue Union: Secondary

A
  • Full thickness
  • Little Epithelialization
  • Chronic Wounds
  • Pressure injuries
  • Venous Ulcerations
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3
Q

Types of Tissue Union: Tertiary

A
  • Contaminated tissue
  • Risk of infection
  • Closure results in too much tension
  • Closed within 5-7 days of initial injury
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4
Q

Epidermal

A
  • Heals through regeneration
  • Requires a wound border free of necrotic tissue
  • Typically heals without scarring
  • If dermal tissue involved granulation occurs simultaneously.
  • Moist wounds epithelialize faster than those left open to air.
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5
Q

Dermal: Phase One: Homeostasis

A
  • Vasoconstriction
  • Fibrin plug formation
  • Within 10-15 min
  • Growth factors released
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6
Q

Dermal: Phase Two: Inflammation

A
  • 24-48 hours
  • Normal signs of swelling
  • Vasodilation
  • Leukocytes and growth factors to the area
  • Phagosytosis
  • Neovascularization
  • Immune cells important during this phase
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7
Q

Dermis: Phase Three: Granulation/Proliferation/Fibroplastic Phase

A
  • Angiogenisis
  • Granulation Formation
  • Wound Contraction
  • Epithelization
  • Myofibroblasts for wound contraction
  • Fibroblasts for collagen, elastin, glycosaminoglycan production.
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8
Q

Dermis: Phase Four: Maturation

A
  • 2-4 weeks
  • Collagen synthesis and alignment
  • Normal scar formation
  • Hypertrophic and Keloid scar formation
  • Compression garments, silicone gels or sheets are used to reduce hypertrophic or keloid scarring.
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