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Nutrition for wound healing CNSC Exam Questions and Answers
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Nutrition for wound healing CNSC Exam Questions and Answers
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Nutrition for wound healing CNSC examWhat's the largest organ in the body? - Answer -Skin
Partial thickness wounds are - Answer -Shallow wounds involving full or partial epidermal loss and
partial loss of the dermal layer
Full thickness wounds involve - Answer -Total loss of both epidermal and dermal layers and possibly as
deep as the fascia, muscle layer and bone.
What is the sequence of events in wound healing? - Answer -Inflammation, prolifertion, reconstruction,
granulation, wound contraction, epithelialization, remodeling, and scar maturation
name two amino acids that are involved in wound healing - Answer -arginine and glutamine
What is arginine's role in wound healing? - Answer -It is a precursor to proline, a building block for
collagen, a precursor to nitric oxide, and stimulates release of insulin, human growth factor, anabolic
hormones and insulin like growth factor.
How is glutamine important for wound healing? - Answer -it improves the killing ability of neutrophils,
stimulates the release of growth hormone, and provides fuel for lymphocytes, epithelial cells,
fibroblasts, and macrophages. It may also help preserve lean muscle mass a an anticatabolic agent
, How is zinc involved in wound healing? - Answer -it plays a role in immune function and in protein
synthesis, cell proliferation, cell membrane stabilization and production and regulation of matrix
metalloproteinases
How is copper involved in wound healing? - Answer -Cu is a micromineral necessary for erythropoeisis
and plays an important role in the hydroxylation of proline and hydroxyproline, which is involved in
collagen cross-linking, especially crucial during remodeling, wound contraction and scar maturation
What factors increase the risk of pressure ulcer formation? - Answer -poor appetite, low intake of
protein and calories, and the need for nutrition support.
What are the calorie requirements for wound healing? - Answer -30-35 kcals/kg
underweight: 35-40 kcals/kg/day
Why is protein important for wound healing? - Answer -It is a required structural component for skin
integrity, for growth and maintenance of cells and for fluid and electrolyte balance. Protien plays an
essential role in immune system cells responsible for the inflammatory response, fibroblast
proliferation, collagen production, and angiogenesis.
What are suggested protein requirements? - Answer -normal healthy adult: 0.8g protein/kg
older adult > 65: 1 g/kg/day
Pressure ulcers: 1.25-1.5 g/kg/day
Arginine has not been shown to benefit chronic wound healing - Answer -True. No studies have been
done . there are no recommendations for supplementation
What are glutamine's roles in the body? - Answer -It serves as a fuel source for enterocytes, fibroblasts,
epitheial cells and macrophages. Research indicates, but does not confirm that it can enhance immune
function in elective surgery and in catabolic states. The current maximum recommended dose for
supplemental glutamine for adults is 0.57 g/kg/day
How are omega 3 fatty acids involved in wound healing? - Answer -They affect proinflammatory cytokine
production, gene expression, cell metabolism,and angiogenesis in the wound bed. There are conflicting
reports regarding use of omega 3 fa in wound healing. some studies suggest it delays wound healing.
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