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32 Cards in this Set
- Front
- Back
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What are the 4 phases of wound healing?
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Inflammatory Phase
Migratory Phase Proliferative Phase Late Phase Scar remodeling |
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What happens during the inflammatory phase?
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hemostasis, vasodilation, and phagocytosis
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What are the signs of vasodilation?
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Erythema, edema, heat, pain (5-7 days)
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What happens during the migratory phase?
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angiogenesis and epithelialization
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What happens during the proliferative phase?
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mesenchymal cells are signaled to transform to fibroblasts to begin collagen deposition (basically fibroplasia and contraction occur)
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What gives collagen its strength?
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cross-linking
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What is contraction?
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wound pulling together with myofibroblasts
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How long does wound healing take?
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12-15 days
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How long does late phase remodeling take?
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3 weeks to 2 years
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When does collagen tensile strength peak?
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6 weeks
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What vitamin is very important to would healing?
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vitamin C
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What is the name of a product with multiple vitamins to help with would healing?
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Zebec
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Why is oxygen needed so much in wound healing?
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hydroxylation of proline and lysine needs to occur
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What effect do steroids have on wound healing?
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1. inhibits fibroplasia and neovascularity
2. impairs epithelization and contraction |
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What trace element is important in wound healing?
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zinc
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What can reverse steroid use in cases of wound healing? What other effect can this have?
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vitamin A; in keloid formers, it will help to break down keloids
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Do NSAIDS delay wound healing?
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no
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Do cytotoxic agens delay wound healing?
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yes
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Why does diabetes delay wound healing?
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infection; impaired circulation that impairs hearling; neuropathy makes them hurt wound without knowing
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3 wound closures?
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primary, secondary, teritary intention
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Primary intention:
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sew up as soon as it comes in
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Examples of primary intention wounds?
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simple lacerations, surgical incisions, most dog bites (not punctures), kitchen knife wounds
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Secondary intention:
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loss of tissue; can't be approximated well; let the body heal it
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Granulated tissue is also known as what?
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proud flesh
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What kinds of wounds should be left to secondary intention wound closure?
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puncture wounds, superficial abrasions, most ulcers, and snake bites
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Why would tertiary intention wound closure be performed?
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grossly contaminated wound, left open for 4-5 days, delayed primary closure
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What kinds of wounds should be left to tertiary intention wound closure?
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uncontrollable hemorrhage (pack and pressure); acute wounds with questionably viable tissue or with foreign bodies; human bites
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Should hydrogen peroxide or betadine be used in a wound? Why?
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no; this destroys the tissue
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What is the problem with absorbable sutures?
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inflammation; use only when necessary
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What sutures are largest? Smallest?
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1.0; 10.0
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What are the normal sutures that are used?
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3.0, 4.0, and 6.0
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When do you normally remove non-absorbable sutures? What about on the face?
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7-10 days; 4-5 days (more will cause scarring)
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