nutrition in burns and wound healing - intermountainphysician · 56 yo woman; 100 kg; 167 cm;...
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Nutrition in Burns and Wound Healing
University of Utah Burn Center Caran Graves MS, RD, CNSC
University of Utah
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Disclosures
Not really, but… I ask lots of questions I’m a skeptic by nature I am not an ‘early adopter’ I believe in food first
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Objectives • Nutrition-related risk factors in
developing and healing wounds • Nutrients involved in wound healing • Limitations in current nutritional
recommendations in wound healing. • Interventions for providing adequate
nutrition in wound healing
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Outline New terminology Pressure Injury
Overview of types of wounds Review hypermetabolic response Discuss nutrient needs Case studies How to meet nutrient needs What to monitor
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Caveats Quality of evidence Theoretical vs. proven Retrospective studies Small samples Over-generalization Grading/strength
Not covered Cell biology Metabolic pathways Healing phases & stages Study details
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Types of wounds Cause • Surgical • Crush • Pressure • Stasis (includes
DM/CVD) • Other (TEN/NF/
frostbite)
Characteristics • Acute • Chronic • Infection/disease
process • Clean/dirty
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Pressure Injury Stage 4+ www.health.qld.gov.au
Venous stasis www.veinsveinsviens.com
Surgical incision
Types of wounds
Pressure Injury stage 4 www.studywithclpna.com
Frostbite Dr. Katie Russell
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Wound evaluation Burn Pressure Ulcer
1st / 1 Red, moist, blanches
Not open, red Does not blanch
2nd / 2 Blister Breaks open, ulcer May blister
3rd / 3
White/waxy, leathery Dark/charred
Crater, fat may show
Stage 4 Muscle & bone
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Case study—Burn
29 yo man 80 kg 178 cm 83% burn (smelter explosion) Intubated and sedated
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Case study—Necrotizing faciitis 56 yo woman 100 kg 167 cm BMI 35 Pressure ulcernecrotizing faciitis Hx: Diabetes Hyperlipidemia Alcohol/Tobacco
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Pressure ulcer risk factors (getting and keeping)
• Wound conditions – Pressure – Moisture
• Weight – Overweight increased pressure – Underweight too little ‘padding’ – Weight loss (large, unplanned)
• Malnutrition – Increased incidence with malnutrition – Starvation/undernutrition delays wound healing
• Poor intake
Common Tools Braden Norton Waterlow
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Nutritional response
Burn Acute (e.g. hatchet)
Chronic (e.g. stasis
ulcer) Systemic inflammation
+/++ +/- +
Time frame Weeks-months Days-weeks Months
Calories ↑/↑↑ ↑ short term ↑
Protein ↑/↑↑ ↑ short term ↑
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Assessment (Basically the same as always)
• Anthropometrics--height, usual weight and loss
• Diet history – Malnutrition – Pt preferences
• Biochemical – No albumin/pre-albumin – Electrolytes & glucose
• Co-morbidities/pre-existing conditions
• Type and size of wound • Treatment plan
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Estimating Caloric Requirements 25 yo male, 183 cm
80 kg 120 kg Harris-Benedict Basal = 1,915
x 1.5 = 2,872 2467 3700
Curreri 4,400 6300
Mifflin – St. Jeor 1850 2224
30-35 kcal/kg 2400-2800 3600-4200
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Energy Requirements
30-35 kcal/kg/d
Prevention and treatment of pressure ulcers: Clinical practice guidelines 2014
>30 improved <20 poor healing
Yamamoto et al 2009
29-38 kcal/kg (BEE x 1.1 x 1.3-1.5) 1.25-1.6 g/kg/d protein
Ohura et al 2011
Pressure ulcers
Prevention and treatment of pressure ulcers 2014; Yamamoto Wounds 2009; Ohura Wound Repair Regen 2011
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Energy Requirements
• 30-35a • >30 improved • 29-38 kcal/kg (BEE x 1.1 x 1.3-1.5)c
Method 30-35 3000-3500 29-38 2900-3800
BEE * XX 2400-2700
a Prevention and treatment of pressure ulcers: Clinical practice guidelines 2014; B Yamamoto et al 2009; C Ohura et al 2011
56 yo woman, 167 cm 100 kg
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Protein Needs
• Protein needed for wound healing • Goal
– 1.25 – 1.5 g/kg/d pressure ulcers – 1.25 – 2 g/kg/d (burn)
• “Remains unclear” (but none is obviously bad) • Monitor BUN & UUN
Cochrane Database 2014; Lee Adv Skin Wound Care 2006; Wolfe Ann Surg 1983
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Protein Needs (types) • Collagen • Arginine
– Stimulates collagen synthesis – Often given with other nutrients
• Glutamine – Cellular fuel – Burns: increased wound healing
• “No clear evidence”
Leigh J Wound Care 2012; Doley Nutr Clin Pract 2010; Streechmilller Nutr Clin Pract 2010; Cereda et al Ann Intern Med 2015
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Other Nutrients Fat • Calorie source • Essential Fatty Acids • Non-CHO calories
Fiber • May not be appropriate
in critically ill
Carbohydrate • Needed for energy • “Stress Diabetes” • Monitor for excess intake • Maximum glucose load
about 4-5 mg/kg/min (7 g/kg/d) during stress
~2000 kcal for 80 kg
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Guidelines; Doley Nutr Clin Pract 2010; Steechmiller Nutr Clin Pract 2010; Wild Nutrition 2010 Graves J Burn Car Res 2009
Vitamins • Based largely on theory
- Vitamin function - Difficult to assess - Needed “if deficient”
• Multivitamin - Common - Safe - Relatively inexpensive
Might help; Shouldn’t hurt
Vita-Vim
• Vitamin A - Immune function - Epithelialization - Collagen formation
• Vitamin C - Collagen formation - Antioxidant - Avoid mega-doses
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Minerals
• Based largely on theory - Mineral function - Difficult to assess - Needed “if deficient”
• Mineral supplementation - Less common - Variable doses & routes
Magic Mineral
Berger Burns 1992; Clin Nutr 1996, 2007; Nutr Clin Pract 2006; Doley 2010; Guidelines 2014
• Zinc - Difficult to assess - Affects other minerals - Needed “if deficient”
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Nutrition Continuum of Care CurativeAssertive care
RehabRestorative care
MaintenanceSupportive care
PalliativeComfort care
From: Everything you always wanted to know about nutrition but didn’t ask. Nancy Collins PhD (Nutrition411.com)
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Consult Order
Evaluation and recommendation: Pt with poor intake and pressure ulcer
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Consult Order Evaluation and recommendation: Pt with poor intake and pressure ulcer
Diet order: Renal Cardiac No sugar Fluid restriction
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Goals
• Wound healing --Remove cause --Positioning --Wound care
•Adequate nutrition – Repletion vs. maintenance
• Balance nutritional needs – Glucose – Weight – Other diet and lifestyle concerns
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Fat mass and lean body mass with caloric delivery
Total body weight and caloric delivery indexed to measured REE
…total body weight at higher caloric intakes was maintained by the addition of fat mass in the face of lean body mass loss.
Fat mass
Muscle mass
What’s the goal?
Hart Ann Surg 2002; Demling ePlasty 2009
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Summary of Pressure Ulcer Recommendations
Prevention and treatment of pressure ulcers: Clinical practice guidelines 2014
Strength Recommendation Comments
Screening C +
Nutrition Assessment
C + Weight history, feeding and intake
Energy B/C +/++ Individualize/30-35 kcal/kg Adjust based on weight (obese/underweight)
Protein C (A for burn) A
+ +
+ N2 balance 1.25-1.5 g/kg/d Supplements for poor po
Vitamin/mineral C (generally) B (if deficient)
++ MVI
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Summary of Pressure Ulcer Recommendations (continued)
Prevention and treatment of pressure ulcers: Clinical practice guidelines 2014
Strength Recommendation Comments
Hydration C ++ Draining wounds “adequate” Monitor for dehydration
Diet Feed people food
C + “Modify/liberalize” “Balanced” “Healthy”
‘Fortified’ foods Supplements
B ++ Can be used
Enteral nutrition Parenteral nutrition
C (burn grade A/B)
+ If oral intake inadequate
“Individualize as tolerated” Noreen Schvaneveldt RD
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Bariatric No nutrition-specific recommendations Critical illness “additional nutrition interventions are not
recommended for routine use” due to insufficient evidence
Older adults No nutrition-specific recommendations Palliative Care Risk assessment (including nutrition)
“compatible with …condition and wishes” Offer protein supplements when healing is the goal
Pediatrics “paucity of research” Assess and reassess Oral, enteral or parenteral as needed for those at risk or w/ malnutrition & wound
Spinal Cord Injury No nutrition-specific recommendations
Special Populations Pressure ulcers
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How? Oral--recommended • What diet?
– Is it adequate? – How many restrictions? – Liberalize liberally
• How much is eaten?
Supplements • Calories? • Protein? • Vitamins? • Minerals? • Specialty
Enteral Nutrition • Total vs. supplemental • What formula?
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“The daily intake of food was selected from the following list: “
Dried milk Brown bread Digestive biscuits Fresh butter Steak (served as stew) Dried apples (served as stew)
Dried tomato soup (served as soup) Dried egg (served as custard) Tea Sugar Marmelade Orange Juice
From: Cuthbertson Biochem J. 1930
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Ultimate Nutrition Support Study (thought experiment only) Thought author: Dr. Mark Oltermann
Severity of illness
Wor
se
Bette
r
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Ultimate Nutrition Support Study (thought experiment only) Thought author: Dr. Mark Oltermann
Severity of illness
Wor
se
Bette
r
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Monitoring
• Wound healing • I & O • Weight? • Labs? • Calorie counts
• How will you use it? • Will it affect care? • Is it practical? • What is the cost?
– time – pain – money How much is
a ‘bite’?
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Monitoring: Glucose control
• Critical Care – Decreased mortality – Decreased morbidity – Insulin protocols
• Benefits of insulin/metformin – Directly increases anabolism
How tight? - 80-110 mg/dl - <180 mg/dl
Insulin vs. carbohydrate restriction
Van der Berge N Engl J Med 2001; NICE-SUGAR 2009
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Case study: burn
Hospital course Calorimetry: 1440 – 4100 kcal (day 4 hypothermic, day 23) UUN max: 39 g N2 out = >250 g protein Enteral + IV Home on po intake
29 yo man; 80 kg; 178 cm; 83% burn (smelter explosion)
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Case Study: Necrotizing Faciitis 56 yo woman; 100 kg; 167 cm; pressure ulcernecrotizing faciitis
Hospital course Calorimetry: 1700- 3200+ kcal Diverting colostomy with wound dehiscence PN & EN nutrition Permissive underfeeding + added protein Normal HgbA1c and cholesterol at discharge Home on po intake
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Questions/Comments
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Selected References • Berger (multiple) Burns 1992;18:373-80; Clin Nutr 1992;11:75-82; Clin Nutr 1996;15:94-6; Am J Clin Nutr 2007;85:1293-300 Nutr Clin Pract 2006;21:438-49 • Cerada et al. A nutritional formula enriched with arginine, zinc, and antioxidants for the healing of pressure ulcers: a randomized trial. Ann Intern Med 2015;21:150-156 • Demling Eplasty Nutrition, anabolism, and the wound healing process: an overview. 2009:9:e9 • Doley J. Nutrition management of pressure ulcers. Nutr Clin Pract 2010;25:61 68 • Graves et al. Actual burn practices: an update. J Burn Care Res 2009;30:77-82 • Hart et al. Energy expenditure and caloric balance after burn. Ann Surg 2002;235:152-61 • Langer G, Fink A. Dietary supplementation for preventing and treating
pressure ulcers. Cochrane Database 2014
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Selected References • Lee et al. Adv Skin Wound Care 2006;19:92-6 • Leigh et al. The effect of different doses of an arginine-containing supplement on the healing of pressure ulcers. Wound Care 2006;19:92-96 • NICE-SUGAR Study Investigators. Intensive versus conventional glucose control in critically ill patients. N Engl J Med 2009;360:1283-97. • Ohura T, et al. Evaluation of effects of nutrition intervention on healing of pressure ulcers and nutritional states. Wound Repair Regen 2011;19:330-336 • Prevention and treatment of pressure ulcers: Clinical practice guidelines 2014 • Streechmiller JK. Understanding the role of nutrition and wound healing Nutr Clin Pract 2010;25:50-60 • Van den Berghe G et al. Intensive insulin therapy in the medical ICU N Engl. J Med 2001;345:1359-67 • Wild et al. Basics in nutrition and wound healing. Nutrition 2010;26:862 • Wolfe et al. Response of protein and urea kinetics in burn patients to different levels of protein intake. Ann Surg 1983 • Yamamoto T et al. Evaluation of nutrition in the healing of pressure ulcers: are the EPUAP nutritional guidelines sufficient to heal wounds? Wounds. 2009 21;6:153-7