BIOL355 Lecture Notes - Lecture 28: Debridement, Granulation Tissue, Necrosis
21 Apr 2017
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Lecture 28: frequent position change, meticulous skin care, frequent and careful observation to detect early signs of breakdown, adequate hydration, nutrition, special mattresses take pressure off areas, skin protective ointments and protective dressings. It is not disinfection or antisepsis macrophages (need them: use isotonic saline for irrigation of wound, dressings to provide a moist wound bed: Clean moist environment must be used for healing. Promotes cellular activity, provides insulation, increases rate of epithelial cell growth and reduces pain: preventing and treating infection: Colonization: is presence and proliferation of bacteria in the wound but no signs of local infection so no host response. Infection: proliferation of bacteria in healthy tissue that produces signs of redness, pain, fever and swelling. Consists of heart, blood, and all the connecting vessels in the body. Immune responses: blood clotting, heart pumps 5 l blood/min at rest, 30-35 l/min when exercising. Blood: fluid consists of blood cells (formed elements) in a fluid called plasma.
