1 Nutritional Considerations in Wound Care 報告者 :陳姝俐 ADVANCES IN SKIN & WOUND CARE & JULY/AUGUST 2006 Diane Langemo, PhD, RN, FAAN; Julie Anderson, PhD,

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1 Nutritional Considerations in Wound Care 報告者 :陳姝俐 ADVANCES IN SKIN & WOUND CARE & JULY/AUGUST 2006 Diane Langemo, PhD, RN, FAAN; Julie Anderson, PhD, RN, CCRC; Darlene Hanson, MS, RN; Susan Hunter, MSN, RN; Patricia Thompson, MS, RN; and Mary Ellen Posthauer, RD, CD, LD 報告者 :陳姝俐 ADVANCES IN SKIN & WOUND CARE & JULY/AUGUST 2006 Diane Langemo, PhD, RN, FAAN; Julie Anderson, PhD, RN, CCRC; Darlene Hanson, MS, RN; Susan Hunter, MSN, RN; Patricia Thompson, MS, RN; and Mary Ellen Posthauer, RD, CD, LD

2 Has reported rather alarming facts on the nutritional status of this patient population.  40% to 60% of hospitalized older adults are either malnourished or at risk for malnutrition.  40% to 85% of nursing home residents are malnourished.  20% to 60% of home care patients are malnourished.  40% to 60% of hospitalized older adults are either malnourished or at risk for malnutrition.  40% to 85% of nursing home residents are malnourished.  20% to 60% of home care patients are malnourished.

3 Lack of proper nutrition can have a significant impact on a patient ’ s ability to recover from illness, disease, or surgery. Malnourished patients are prone to diminished muscle strength; development of pressure ulcers, infection, or postoperative complication; and poor wound healing. In addition, malnourished older adults tend to be frail or fail to thrive, increasing their risk for skin breakdown.

4 Body Response in Wound Healing Having a major wound or infection increases the body ’ s energy and protein needs as a result of pathologic processes and stress-induced changes. Hormonal changes also lead to increased glycogen breakdown and mobilization of free fatty acids. The breakdown of glucagons increases glucose production from amino acids, ultimately resulting in a reduced storage of glucose, fatty acids, and proteins. Having a major wound or infection increases the body ’ s energy and protein needs as a result of pathologic processes and stress-induced changes. Hormonal changes also lead to increased glycogen breakdown and mobilization of free fatty acids. The breakdown of glucagons increases glucose production from amino acids, ultimately resulting in a reduced storage of glucose, fatty acids, and proteins.

5 Body Response in Wound Healing Cytokines, or cell-mediated proteins, enhance the immune system but can also cause anorexia and fever. The gastrointestinal and immune systems trigger impaired bowel function, immunosuppression, impaired wound healing, loss of skeletal muscle mass, and weakness. Individuals with compromised gut function suffer from anorexia, diarrhea, decreased nutrient absorption,and increased intestinal gut permeability. Cytokines, or cell-mediated proteins, enhance the immune system but can also cause anorexia and fever. The gastrointestinal and immune systems trigger impaired bowel function, immunosuppression, impaired wound healing, loss of skeletal muscle mass, and weakness. Individuals with compromised gut function suffer from anorexia, diarrhea, decreased nutrient absorption,and increased intestinal gut permeability.

6 Body Response in Wound Healing When lean body mass (LBM) is lost and protein-energy malnutrition (PEM) results, or when catabolism exceeds anabolism, a wound or pressure ulcer may develop and delay healing. PEM results in the loss of body weight and subcutaneous fat, muscle wasting, peripheral edema, poor healing of wounds and pressure ulcers, glossitis, chronic infections, and fatigue occurs in 30% to 50% of hospitalized patients When lean body mass (LBM) is lost and protein-energy malnutrition (PEM) results, or when catabolism exceeds anabolism, a wound or pressure ulcer may develop and delay healing. PEM results in the loss of body weight and subcutaneous fat, muscle wasting, peripheral edema, poor healing of wounds and pressure ulcers, glossitis, chronic infections, and fatigue occurs in 30% to 50% of hospitalized patients

7 SummarySummary if the patient has a greater than 10% body weight loss, wound healing is impaired. With a greater than20% to 30% body weight loss, wound healing ceases and new wounds have the potential to develop if the patient has a greater than 10% body weight loss, wound healing is impaired. With a greater than20% to 30% body weight loss, wound healing ceases and new wounds have the potential to develop

8 Assessing Visceral Protein Serum albumin, however, may not be a good indicator of an individual ’ s nutritional status because it has a long half-life of 21 days. Albumin levels are affected by many factors, such as hydration, stress, liver disease, infection, sepsis,renal disease, and cytokine-induced inflammatory states. The range of normal albumin is generally 3.5 to 5.0 g /d L,and a level below 3.5 indicates nutritional risk or malnutrition. Serum albumin, however, may not be a good indicator of an individual ’ s nutritional status because it has a long half-life of 21 days. Albumin levels are affected by many factors, such as hydration, stress, liver disease, infection, sepsis,renal disease, and cytokine-induced inflammatory states. The range of normal albumin is generally 3.5 to 5.0 g /d L,and a level below 3.5 indicates nutritional risk or malnutrition.

9 Assessing Visceral Protein Prealbumin has a half-life of 72 hours and is a useful nutritional status indicator, particularly in acute or subacute settings. The normal range of prealbumin levels is 19.5 to 35.8 mg/dL. Prealbumin has a half-life of 72 hours and is a useful nutritional status indicator, particularly in acute or subacute settings. The normal range of prealbumin levels is 19.5 to 35.8 mg/dL.

10 Assessing Visceral Protein Transferrin has a 7-day half-life and acts as an irontransporting protein. It is a somewhat unreliable indicator of nutritional status, however, because of its relationship to iron levels. Normal transferrin levels are between 230 and 390 mg/dL Transferrin has a 7-day half-life and acts as an irontransporting protein. It is a somewhat unreliable indicator of nutritional status, however, because of its relationship to iron levels. Normal transferrin levels are between 230 and 390 mg/dL

11 Dietary Supplementation A variety of supplemental products are available to promote cell production and assist in collagen synthesis and wound contraction and remodeling. The nutritional supplements that are used most often in therapeutic regimens are vitamins A, C, and E and zinc. A variety of supplemental products are available to promote cell production and assist in collagen synthesis and wound contraction and remodeling. The nutritional supplements that are used most often in therapeutic regimens are vitamins A, C, and E and zinc.

12 Vitamin C Vitamin C is a water-soluble, essential vitamin that is responsible for the synthesis of connective tissue/collagen Therapeutic doses of vitamin C vary from 200 mg/day to4 g/day. Research supports the relationship between vitamin C supplementation and the promotion of pressure ulcer healing; it also documents that malnutrition increases an individual ’ s susceptibility to pressure ulcer formation Vitamin C is a water-soluble, essential vitamin that is responsible for the synthesis of connective tissue/collagen Therapeutic doses of vitamin C vary from 200 mg/day to4 g/day. Research supports the relationship between vitamin C supplementation and the promotion of pressure ulcer healing; it also documents that malnutrition increases an individual ’ s susceptibility to pressure ulcer formation

13 Zinc Zinc is a trace mineral that is present in small amounts in the body. Zinc is transported by the protein albumin and has a key role in tissue growth and healing as well as collagen synthesis and immune function. Individuals with larger nonhealing wounds often receive 25 to 50 mg of zinc daily; however, because excess zinc can interfere with wound healing and copper metabolism Zinc is a trace mineral that is present in small amounts in the body. Zinc is transported by the protein albumin and has a key role in tissue growth and healing as well as collagen synthesis and immune function. Individuals with larger nonhealing wounds often receive 25 to 50 mg of zinc daily; however, because excess zinc can interfere with wound healing and copper metabolism

14 Vitamin A Vitamin A is a fat-soluble vitamin that is responsible for the maintenance of epithelium. It also stimulates cellular differentiation for fibroblasts and for collagen formation. The recommended dose is 700 to 3000 IU (with the higher range for males) when a deficiency is suspected. Vitamin A is a fat-soluble vitamin that is responsible for the maintenance of epithelium. It also stimulates cellular differentiation for fibroblasts and for collagen formation. The recommended dose is 700 to 3000 IU (with the higher range for males) when a deficiency is suspected.

15 Medical Nutrition Therapy Medical nutrition therapy is imperative for the prevention and treatment of wounds, including pressure ulcers, because malnutrition, dehydration, and weight loss all play a role in the development and healing of wounds.

16 Risk factors for pressure ulcer development include: albumin level below 3.5 g/dL serum transferrin level below 180 mg/dL hemoglobin below 12 g/dL total lymphocyte count less than 1800 per microliter dehydration poor food and/or fluid intake unintentional weight loss. albumin level below 3.5 g/dL serum transferrin level below 180 mg/dL hemoglobin below 12 g/dL total lymphocyte count less than 1800 per microliter dehydration poor food and/or fluid intake unintentional weight loss.

17 Conclusions Significant nutritional deficits can develop quickly. Dietary professionals must review the medical records, assess nutritional needs, and make the appropriate recommendations. Significant nutritional deficits can develop quickly. Dietary professionals must review the medical records, assess nutritional needs, and make the appropriate recommendations.

18