NURS405A Lecture Notes - Lecture 21: Asepsis, Capillary Action, Granulation Tissue
20 Jun 2020
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Document Summary
Wound - disruption of integrity and function of tissues in the body. Two types of wounds: loss of tissue and without loss of tissue. Surgical wound heals by primary intention: skin edges approximated or closed, risk of infection is low, healing occurs quickly with minimal scar formation. Wound involves loss of tissue, such as a burn, pressure ulcer or severe laceration, heals by secondary intention: left open until it becomes filled by scar tissue, longer for wound to heal by secondary intention. Tertiary intention wound left open for several days, then wound edges are approximated. Causes: wounds that are contaminated and require observation for signs of inflammation. Implications for healing: closure of wound is delayed until risk of infection is resolved (after resolved, then sutures are put in) Partial-thickness wounds are shallow, involving loss of the epidermis (top layer) and possibly partial loss of the dermis (ex. clean surgical wound or abrasion heal by regeneration)
