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Cards In This Set
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Wound
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An injury, usually involving division of tissue or rupture of the integument or mucous membrane, due to external violence or some mechanical agency rather than disease.
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Intentional wound
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Result of planned invasive therapy, purposely created (i.e. IV, OR, lumbar puncture). Wound edges clean, controlled bleeding.
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Unintentional wound
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Accidental (i.e. stabbing, gunshot, burn). Wound edges jagged, uncontrolled bleeding.
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Open wound
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Portal of entry present.
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Closed wound
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I.e fall - no broken skin surface.
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Abrasion
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Friction, rubbing or scraping, involves top layer of skin.
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Puncture
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Caused by blunt or sharp instrument.
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Laceration
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Tearing of skin, tissue not aligned loose flaps of skin.
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Incision
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Wound edges in close approximation, aligned.
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Contusion
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Contusion - overlyn skin intact, injury to underlying soft tissue from blunt instrument.
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Hemostasis
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Blood clotting.
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Inflammatory phase
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1. Begins at time of injury; prepares wound for healing.
2. Hemostasis (blood clotting) and phagocytosis (leukocytes and macrophatges move to wound) occurs.
3. Vascular and cellular phase of inflammation-generalized body response (mild increase in temp, increased WBC's, malaise)
4. Lasts 4-6 days to ingest bacteria
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Proliferation phase
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1. Fibroblasts lay down epithelial cells (granulation)
2. Fragile - bleeds easily
3. Lasts up to 21 days.
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Granulation
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When capillaries grow across wound; provide foundation for this scar.
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Maturation
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1. Collagen deposited to form scar
2. Avascular area - no sweat, no hair, no tan, less elastic
3. Begins 3 weeks after injury.
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