Nutrition for Dialysis Patients
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Transcript of Nutrition for Dialysis Patients
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NUTRITION FOR DIALYSIS PATIENTSBy
Khairatul Azwa Binti Mohd Shamsuddin
A115851
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AIMS
Understand the nutritional needs of ESRD patients.
Systematically break down the nutritional needs of ESRD patients.
Gain an understanding of the seriousness of malnutrition in ESRD patients.
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OBJECTIVES
At the end of this session, students will be able to:
Describe in detail the nutritional needs of ESRD patients.
Draw a food pyramid guide on nutrition for ESRD patients.
Be motivated to educate ESRD patients on their dietary intake.
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INTRODUCTION
Global picture of malnutrition 10 to 70% in HD patients 18 to 51% in CAPD patients
Mostly protein deficiency Hypoalbuminemia 25 – 50%
Malnutrition indicators are powerful predictors of morbidity and mortality in ESRD.
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NUTRITION PRESCRIPTION FOR DIALYSIS
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CHALLENGES TO ACHIEVEMENT
Achieving energy adequacy Replacing protein losses Educational needs Other nutrients to manage
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PROTEINDietary protein
Pi, H+, K+, Na+, SO4, N
Ess & Non-Ess Amino AcidsBody protein stores
Urea
Renal excretion
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WHY IS PROTEIN IMPORTANT?
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PROTEIN METABOLISM IN ACIDOSIS
Uremia imposes anorexia and indicates abnormal protein and amino acid metabolism. Altered essential amino acid concentrations Metabolic acidosis accelerates protein
degradation Amino acids from proteolysis increasingly
oxidised
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PROTEIN LOSSES IN HEMODIALYSATES
8 – 12g per treatment with conventional membranes.
10 – 30% higher with porous synthetic membranes.
Cellulosic membranes increase amino acid losses from skeletal muscle.
Reprocessed dialyzers consume more.
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PROTEIN LOSSES DURING PD
Types of proteins lost (5 – 15g daily) Carrier proteins, hormones, coagulation/fibrinolytic
hormones, immune system, enzymes, lipoprotein, etc. (including albumin)
Amino acid losses from 1.7 – 3g/day.
• CAPD peritonitis increases losses by > 15g/day.
• IPD peritonitis have recorded up to 100g/day.• Appetite suppressed from dextrose
absorption.
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HOW MUCH PROTEIN DO THESE PATIENTS NEED?
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PROTEIN REQUIREMENTS
Increased for ESRD Between 1.1 – 1.2g/kg/day for HD Between 1.2 – 1.4g/kg/day for PD Between 1.4 – 1.6g/kg/day for PD with peritonitis
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INTAKE RECOMMENDATIONS
Limit total fat to less than 30% energy. Saturated fat to less than 10% energy. Increasing polyunsaturated fat (PUFA). Limiting cholesterol intake to less than
300mg.
Fat also supplies energy 1g = 9 kcal
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CHECKPOINT!
What have we learnt so far? Protein
Increase intake to avoid malnutrition. Recover lost proteins Altered metabolism
Recommendations range from 1.1 – 1.6g/kg/day Lipids
Increase PUFA intake. Important to maintain energy.
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HIGH SODIUM FOODS
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Calcium levels progressively fall.
Recommended intake is 1000 – 1500mg
Low protein/phosphorus diet will also result in low calcium. Need supplement
Supplementation may cause hypercalcemia.
Phosphate levels rise as renal function is 25% or less.
Bone abnormalities rise with 50% GFR or less.
Restrict phosphate to 12 – 15mg/g dietary protein Use phosphate binders Individualize dose
Calcium Phosphate
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PHOSPHATE
Food content Meat : 7 – 8mg/g protein Shellfish/tinned fish/ offal : 15 – 20mg/g protein Dairy foods : 25mg/g protein
Lowering phosphate requires protein reduction.
Binders is a must with high phosphate foods. Calcitriol increases gut absorption.
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HIGH PHOSPHATE FOODS
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CHECKPOINT!
What have we learnt so far? Protein
Increase intake to avoid malnutrition. Recover lost proteins Altered metabolism
Recommendations range from 1.1 – 1.6g/kg/day Lipids
Increase PUFA intake. Important to maintain energy.
Sodium & Fluid Reduce salt intake and maintain fluid restriction as
recommended. Phosphate
Restrict to avoid bone abnormalities Phosphate binders a must!
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POTASSIUM
Serum potassium > 6.0 – 6.5 if GFR below 5ml/min.
Consider non-dietary causes of hyperkalemia.
Restrict to 1 mmol/kg body weight. 2.0 – 3.0g for HD 3.0 – 4.0g for PD
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HIGH POTASSIUM FOODS
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VITAMIN REPLACEMENT THERAPY Needed to support carbo, protein, lipid,
and nucleic acid metabolism. Absorption, retention, and activity affected
because :Restricted dietsUremic toxinsGI effectsDialysis process
Supplement & restrainReplace losses of water-soluble vitamins.Vit A retention causes toxicity.Excessive Vit C supplementation aids oxalate
formation.
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CHECKPOINT! What have we learnt so far?
Protein Increase intake to avoid malnutrition.
Recover lost proteins Altered metabolism
Recommendations range from 1.1 – 1.6g/kg/day
Lipids Increase PUFA intake. Important to maintain energy.
Sodium & Fluid Reduce salt intake and maintain fluid restriction as recommended.
Phosphate Restrict to avoid bone abnormalities Phosphate binders a must!
Potassium To avoid heart problems. Decrease intake.
Vitamins Moderate intake.
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PATIENT EDUCATION
Value of early education intervention on knowledge retention and practice.
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INCREASE STAFFING & TIME REQUIREMENTS
Nutrition screening Monitoring of nutritional status Patient counseling
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CONCLUSION
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HAVE THE OBJECTIVES BEEN ACHIEVED?
Describe in detail the nutritional needs of ESRD patients.
Draw a food pyramid guide on nutrition for ESRD patients.
Be motivated to educate ESRD patients on their dietary intake.
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Eat freely
Eat moderately
Eat with caution
Protein & Calories
Potassium
Phosphate Sodium : Eat moderately
Fluid : Drink moderately
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