33:630:363 Lecture Notes - Lecture 3: Ultimate Tensile Strength, Pressure Ulcer, Malnutrition
15 Jan 2020
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Document Summary
Pressure ulcer term previously used: pressure injury: localized skin and soft tissue damage over a bony prominence, most commonly occurring on buttocks, sacrum, elbows, hips and heels, stages i to iv. Incidence: 11. 6-50% of hospitalized and nursing home patients: 30% stage iii or iv. Nutrition screening tools: can help identify who may be at risk for pressure injuries. Monitoring: pressure ulcer scale for healing tool (push tool) Treatment: pressure relief, wound dressings, topical treatments, surgical or enzymatic debridements. Inflammatory phase (4-6 days): inflammatory cells clean the wound: dietary antioxidants (vitamin c) and enzyme cofactors (zinc) may help reduce oxidative stress. Proliferative phase (3-21 days): fibroblasts start producing collagen: needs adequate supply of amino acids, vitamin c, copper and iron. Remodeling phase (2 weeks-2 years): collagen is synthesized for strength and skin integrity: needs adequate supply of magnesium, zinc and vitamin c.
