nutrition parenteral formula nurpudji astuti department of nutrition school of medicine hasanuddin...
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NUTRITION PARENTERAL formula
Nurpudji Astuti
Department of Nutrition
School of Medicine Hasanuddin University
@2013
‘A slender and restricted diet is always dangerous in chronic and in acute diseases’
Hippocrates 400 B.C.
ICU Nutrition in the 1970s
Safety Parenteral Nutritional
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GOAL OF NUTRITION THERAPY(medical nutrition therapy) Minimized loss of prot and energy for patient
with in adequate intake Through enteral and parenteral nutrition
NUTRITIONNUTRITION
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Dikutip dari Presentasi Prof. DR. Dr. Eddy Rahardjo, SpAn KIC.
Parenteral Nutrition
Organisation of Nutrition Support
3. NICE Guidelines for Nutrition Support in Adults 2006
Screen
Recognise
Treat
Oral Enteral Parenteral
Monitor & Review
Treat: Enteral
use the most appropriate route of access and mode of delivery
has a functional and accessible gastrointestinal tract
if patient malnourished/at risk of malnutritiondespite the use of oral interventions and
3. NICE Guidelines for Nutrition Support in Adults 2006
Treat: PN
and has either
introduce progressively and monitor closely
if patient malnourished/at risk of malnutrition
a non-functional, inaccessible or perforated
gastrointestinal tract
inadequate or unsafe oral or enteral nutritional intake
use the most appropriate route of access and mode of delivery
3. NICE Guidelines for Nutrition Support in Adults 2006
Objectives
Define Parenteral Nutrition Therapy (PN) Explain PN components Describe PN follow-up parameters
Definition
Parenteral nutrition is partial or total nutrition
administered intravenously. A peripheral or
central vein is used for access.
Indications: Parenteral Nutrition
Non-functional gastrointestinal tract Impossible to use the gastrointestinal tract Need for intestinal rest
Palliative use in terminal patients is controversial.
JPEN 2002;26(Suppl 1):83SA
Containdications:Parenteral Nutrition
Ability to adequately receive and absorb
necessary foods orally or by gastric or
enteral tube Hemodynamic instability
Central Parenteral Nutrition
Selection depends on caloric requirements, volume to be
administered and patient condition, as well as final
concentration of components:
Amino acids > 5%
Dextrose > 20%
Lipids
Includes vitamins, minerals, and trace elements
Osmolality > 700 mOsm/kg H2O
Formulas : Parenteral Nutrition
Dextrose Provides 3.4 kcal/g Can be the only source of energy Dextrose infusion rate should not exceed 5 mg/kg/min Closely related to solution osmolality
Hill GL, et al. Br J Surg 1964;7:1
Formulas : Parenteral Nutrition
Amino Acids Standard concentrations can vary between 5% and 15% Energy value of amino acids (4 kcal/g) Nitrogen (g) = protein (g) / 6.25
Formulas : Parenteral NutritionLipids Prevent essential fatty acids deficiency Non-protein source of kcal. Recommended dose
1 g/kg/day Available 10%, 20%, and 30% concentrations Included as LCT or a mix of MCT/LCT at 10% and 20% Added to basic parenteral nutrition solutions or
administered individually
Trimbo SL. et al. Nutr Supp Serv 1986;6:18
Formulas : Parenteral NutritionLipids Less hyperglicemia Lower concentrations of serum insulin Less risk of hepatic damage High dose can interfere with immune functions High infusion rates can affect respiratory functions Should be used with care in: - Hyperlipidemia
- Symptomatic athrosclerosis
- Acute pancreatitis with hypertrigliceridemia
Formulas : Parenteral NutritionElectrolytes Calcium, magnesium, phosphorus, chloride, potassium,
sodium, and acetate Forms and amounts are titrated based on metabolic status
and fluid/electrolyte balance Must consider calcium-phosphate solubility
Alpers DH. et al., eds. In: Manual of Nutritional Therapeutics. Little, Brown and Company; 1995
Formulas : Parenteral Nutrition
Vitamins and Minerals
In general, amounts below daily recommended intake
for healthy people, but nonetheless sufficient to cover
requirements, are added to oral or enteral formulas
Added daily to parenteral nutrition.
Acute illness, infection, preexisting malnutrition, and
excessive fluid loss increase vitamin requirements.
Formulas : Parenteral Nutrition
Trace elements
Include daily zinc, copper, chromium, and manganase
for patients with kidney or liver failure.
Different requirements dictated by patient and pathology
Patients under extended parenteral nutrition require the
addition of iron and selenium.
Peripheral Parenteral Nutrition
Selection of peripheral access depends on clinical
situation, requirements, tolerance to volume, and final
formula concentration.
Osmolality < 700 mOsm/kg
Total kcal limited by concentration and ratio to volume
being administered
Include ½ of the recommended electrolytes for PN
Torosian MH, ed. In: Nutrition for the Hospitalized Patient. Marcel Dekker Inc.;1995
Monitoring Patient on Parenteral Nutrition
Metabolic• Glucose• Fluid and electrolyte balance• Renal and hepatic function• Triglycerides and cholesterol
Assessment • Body weight• Nitrogen balance• Plasma protein• Creatinine/height index
Campbell SM, Bowers DF. Parenteral Nutrition. In: Handbook of Clinical Dietetics. Yale University Press. 1992
Summary Parenteral nutrition supplies partial or total nutrition
by venous access
Total parenteral nutrition components supply all
required nutrients Metabolic monitoring and changes in solution
components are needed to maintain adequate metabolic balance.
Parenteral Nutrition Formula Calculations and Monitoring Protocols
Macronutrient Concentrations in PN Solutions Macronutrient concentrations (%) = the
grams of solute/100 ml of fluid D70 has 70 grams of dextrose per 100 ml. 10% amino acid solution has 10 grams
amino acids/100 ml of solution 20% lipids has 20 grams of lipid/100 ml of
solution
Protein Content Calculations
To calculate the grams of protein supplied by a TPN solution, multiply the total volume of amino acid solution (in ml*) supplied in a day by the amino acid concentration.
Example Protein Calculation
1000 ml of 8% amino acids:
1000 ml x 8 g/100 ml = 80g
Or 1000 x .08 = 80 g
Calculation of Dextrose Calories
Calculate grams of dextrose:– Multiply the total volume of dextrose soln (in
ml) supplied in a day by the dextrose concentration. This gives you grams of dextrose supplied in a day.
Multiply the grams of dextrose by 3.4 (there are 3.4 kcal/g dextrose) to determine kcalories supplied by dextrose in a day.
Sample Dextrose Calculation
1000 ml of D50W (50% dextrose)– 1000 ml x 50g / 100 ml = 500g dextrose– OR 1000 ml x .50 = 500g dextrose
500g dextrose x 3.4 kcal/g = 1700 kcal
Calculation of Lipid Content
To determine kcalories supplied by lipid*, multiply the volume of 10% lipid (in ml) by 1.1; multiply the volume of 20% lipid (in ml) by 2.0.
If lipids are not given daily, divide total kcalories supplied by fat in one week by 7 to get an estimate of the average fat kcalories per day.
*|Lipid emulsions contain glycerol, so lipid emulsion does not have 9 kcal per gram as it would if it were pure fat. Some use 10 kcal/gm for lipid emulsions.
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Example Lipid Calculation for 2-in-1 500 ml of 10% lipid
– 500 ml x 1.1 kcal/ml = 550 kcal
500 ml 20% lipid – 500 ml x 2.0 kcal/ml = 1000 kcal
Or, alternatively, 500 ml of 10% lipid = 50 grams lipid x 10 kcal/g or 500 kcal
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Calculation of Dextrose/AA with Piggyback Lipids (2-in-1) Determine patient's kcalorie, protein, and fluid
needs. Determine lipid volume and rate for "piggy back"
administration. – Determine kcals to be supplied from lipid. (Usually
30% of total kcals). – Divide lipid kcals by 1.1 kcal/cc if you are using 10%
lipids; divide lipid kcals by 2 kcal/cc if you are using 20% lipids. This is the total volume.
– Divide total volume of lipid by 24 hr to determine rate in cc/hr.
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Determine protein concentration
Subtract volume of lipid from total fluid requirement to determine remaining fluid needs.
Divide protein requirement (in grams) by remaining fluid requirement and multiply by 100. This gives you the amino acid concentration in %.
Multiply protein requirement in grams x 4 to determine calories from protein
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Determine dextrose concentration.
Subtract kcals of lipid + calories from protein from total kcals to determine remaining kcal needs.
Divide "remaining kcals" by 3.4 kcal/g to determine grams of dextrose.
Divide dextrose grams by remaining fluid needs (in protein calculations) and multiply by 100 to determine dextrose concentration.
Determine rate of AA/dex solution by dividing "remaining fluid needs” by 24 hr.
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Example Calculation
Nutrient Needs:
Kcals: 1800. Protein: 88 g. Fluid: 2000 cc
1800 kcal x 30% = 540 kcal from lipid
Lipid (10%):– 540 kcal/1.1 (kcal/cc) = 491 cc/24 hr =
20 cc/hr 10% lipid (round to 480 ml)
Remaining fluid needs: 2000cc - 480cc = 1520cc
Protein Calculations
Protein: 88 g / 1520 cc x 100 =5.8% amino acid solution
88 g. x 4 kcal/gm =352 kcals from protein
Remaining kcal needs: 1800 – (528 + 352) = 920 kcal
Dextrose Concentration
920 kcal/3.4 kcal/g = 270 g dextrose 270 g / 1520 cc x 100 = 17.7%
dextrose solution Rate of Amino Acid / Dextrose: 1520
cc / 24hr = 63 cc/hrTPN recommendation: Suggest two-in-one
PN 17.7% dextrose, 5.8% a.a. @ 63 cc/hr with 10% lipids piggyback @ 20 cc/hr
Re-check calculationsTPN recommendation: Suggest two-in-one
PN 17.7% dextrose, 5.8% a.a. @ 63 cc/hr with 10% lipids piggyback @ 20 cc/hr
63 cc/hr x 24 = 1512 ml
1512 * (.177) = 268 g D X 3.4 kcals= 911 kcals
1512 * (.058) = 88 g a.a. x 4 kcals = 352
20 cc/hr lipids*24 = 480*1.1 kcals/cc = 528
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3 in 1 TNA Solutions | Determine patient's kcalorie, protein, and fluid
needs. Divide daily fluid need by 24 to determine rate of
administration. Determine lipid concentration.
– Determine kcals to be supplied from lipid. (Usually 30% of total kcals).
– Determine grams of lipid by dividing kcal lipid by 10.
– Divide lipid grams by total daily volume (= fluid needs or final rate x 24) and multiply by 100 to determine % lipid.
3-in-1 TNA Solutions Determine protein concentration by dividing protein needs
(grams) by total daily volume and multiply by 100. Multiply protein needs in grams x 4 kcal/gm = kcals from
protein Determine dextrose grams. Subtract kcals of lipid and kcals from protein from total
kcals to determine remaining kcal needs. Divide "remaining kcals" by 3.4 kcal/g to determine grams
of dextrose. Determine dextrose concentration by dividing dextrose
grams by total daily volume and multiply by 100
Sample Calculation 3-in-1
Nutrient Needs: – Kcals: 1800 Protein: 88 g Fluid: 2000 cc
Lipid : 1800 kcal x 30% = 540 kcal
– 540 kcal / 10 kcal per gram = 54 g
– 54 g / 2000 cc x 100 = 2.7% lipid
Protein: 88 g / 2000 cc x 100 =4.4% amino acids
88 g x 4 = 352 kcals from protein
Sample Calculation 3-in-1(cont)
Dextrose: 908 kcal (1800 – 540 - 352)– 908/3.4 kcal/g = 267 g dextrose – 267 g / 2000 cc x 100 =
13.4% dextrose solution– Rate of Amino Acid / Dextrose/Lipid: 2000 cc /
24hr = 83 cc/hr– TPN prescription: Suggest TNA 13.4%
dextrose, 4.4% amino acids, 2.7% lipids at 83 cc/hour provides 88 g. protein, 1800 kcals, 2000 ml. fluid
Evaluation of a TNA Order
PN 15% Dextrose, 4.5% AA., and 3% lipid @ 100 cc/hour
Evaluation of a PN Order
PN 15% dextrose, 4.5% a.a., 3% lipid @ 100 cc/hour
Total volume = 2400 Dextrose: 15g/100 ml * 2400 ml = 360 g 360 g x 3.4 kcal/gram = 1224 kcals Lipids 3 g/100 ml x 2400 ml = 72 g lipids 72 x 10 kcals/gram = 720 kcals
Evaluation of a PN Order
Amino acids: 4.5 grams/100 ml * 2400 ml = 108 grams protein
108 x 4 = 432 kcals 1224 + 720 + 432 = 2376 total kcals Lipid is 30% of total calories Dextrose is 51.5% of total calories Protein is 18% of total calories
Calculation of Nonprotein Calories Some clinicians discriminate between
protein and nonprotein calories although this is falling out of favor
This is more commonly used in critically ill patients
Calculation of Non-Protein Calories
To determine the nonprotein kcalories (NPC) in a TPN prescription, add the dextrose calories to the lipid calories
In the last example, 1224 kcals (dextrose) + 720 kcals (lipid) = 1944 non-protein kcals
Dextrose is 63% of nonprotein kcals (1224/1944) Lipid is 37% of nonprotein calories (720/1944) In critically ill patients, some clinicians restrict
lipid to 30% of nonprotein kcals
Calculation of NPC:N Ratio |
Calculate grams of nitrogen supplied per day (1 g N = 6.25g protein)
Divide total nonprotein calories by grams of nitrogen
Desirable NPC:N Ratios:– 80:1 the most severely stressed patients – 100:1 severely stressed patients – 150:1 unstressed patient
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Example NPC:N Calculation
80 grams protein2250 nonprotein kcalories per day
80g protein/ 6.25 = 12.82250/12.8 = 176NPC:N = 176:1
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Example %NPC Fat Calculation*
2250 nonprotein kcal550 lipid kcal
550/2250 x 100 = 24% fat kcals
*Limit is 60% NPC
Osmolarity in PPN
When a hypertonic solution is introduced into a small vein with a low blood flow, fluid from the surrounding tissue moves into the vein due to osmosis. The area can become inflamed, and thrombosis can occur.
IV-Related Phlebitis
Calculating the Osmolarity of a Parenteral Nutrition Solution1. Multiply the grams of dextrose per liter by 5.
Example: 100 g of dextrose x 5 = 500 mOsm/L2. Multiply the grams of protein per liter by 10.
Example: 30 g of protein x 10 = 300 mOsm/L3. Multiply the grams of lipid per liter by 1.5.
Example: 40 g lipid x 1.5 = 60.4. Multiply the (mEq per L sodium + potassium +
calcium + magnesium) X 2 Example: 80 X 2 = 160
5. Total osmolarity = 500 + 300 + 60 + 160 = 1020 mOsm/L
Source: K&M and PN Nutrition in ADA, Nutrition in Clinical Practice. P 626
Osmolarity Quick Calculation
To calculate solution osmolarity: multiply grams of dextrose per liter by 5 multiply grams of protein per liter by 10 add a & b add 300 to 400 to the answer from "c".
(Vitamins and minerals contribute about 300 to 400 mOsm/L.)
Source: http://www.csun.edu/~cjh78264/parenteral/calculation/calc07.html
Is the solution compoundable?
TPN is compounded using 10% or 15% amino acids, 70% dextrose, and 20% lipids
The TPN prescription must be compoundable using standard base solutions
This becomes an issue if the patient is on a fluid restriction
Is the Solution Compoundable?
What is the minimum volume to compound the PN prescription?
Example: 75 g AA350 g dextrose 50 g lipid2000 ml fluid restriction
AA: 10 g = 75 g = 750 ml using 10% AA100 ml X ml
OR divide 75 grams by the % base solution, 75 g/ .10
Is the solution compoundable?
Dextrose: 70 g = 350 g x = 500 ml 100 ml X ml
Lipid: 20 g = 50g X = 250 ml 100 ml x ml
Total volume = 750 ml AA + 500 ml D + 250 ml lipid + 100 ml (for electrolytes/trace) = 1600 ml (minimum volume to compound solution)
Tip: Substrates should easily fit in 1 kcal/ml solutions
Is this solution compoundable?
PN prescription:
AA 125 g
D 350 g
Lipid 50 g
Fluid restriction 1800 ml/day
Is this solution compoundable?AA: 10 g = 125 g = 1250 ml 10% AA
100 ml X mlDextrose: 70 g = 350 g x = 500 ml (350/.70) 100 ml X ml
Lipid: 20 g = 50g X = 250 ml (50/.20) 100 ml x ml
Total volume = 1250 ml AA + 500 ml D + 250 ml lipid + 100 ml (for electrolytes/trace) = 2100 ml (minimum volume to compound solution)
Verdict: not compoundable in 1800 ml. Action: reduce dextrose content or use 15% AA base solution
if available (could deliver protein in 833 ml of 15%)
Parenteral Nutrition
Monitoring
Monitoring for Complications Malnourished patients at risk for refeeding
syndrome should have serum phosphorus, magnesium, potassium, and glucose levels monitored closely at initiation of SNS. (B)
In patients with diabetes or risk factors for glucose intolerance, SNS should be initiated with a low dextrose infusion rate and blood and urine glucose monitored closely. (C)
Blood glucose should be monitored frequently upon initiation of SNS, upon any change in insulin dose, and until measurements are stable. (B)
ASPEN BOD. Guidelines for the use of enteral and parenteral nutrition in adult and pediatric patients. JPEN 26;41SA, 2002
Monitoring for Complications Serum electrolytes (sodium, potassium, chloride,
and bicarbonate) should be monitored frequently upon initiation of SNS until measurements are stable. (B)
Patients receiving intravenous fat emulsions should have serum triglyceride levels monitored until stable and when changes are made in the amount of fat administered. (C)
Liver function tests should be monitored periodically in patients receiving PN. (A)
ASPEN BOD. Guidelines for the use of enteral and parenteral nutrition in adult and pediatric patients. JPEN 26;41SA, 2002
Acute Inpatient PN Monitoring
Parameter Daily
Frequency
3x/week WeeklyGlucose Initially √
Electrolytes Initially √
Phos, Mg, BUN, Cr, Ca
Initially √
TG √
Fluid/Is & Os √
Temperature √
T. Bili, LFTs Initially √
Adapted from K&M, p. 549
Inpatient Monitoring PN
Parameter Daily
Frequency
Weekly PRNBody Weight Initially √
Nitrogen Balance Initially √
HGB, HCT √
Catheter Site √
Lymphocyte Count √ √
Clinical Status
Monitor—cont’d
Urine:Glucose and ketones (4-6/day)Specific gravity or osmolarity (2-4/day)Urinary urea nitrogen (weekly)
Other:Volume infusate (daily)Oral intake (daily) if applicableUrinary output (daily)Activity, temperature, respiration (daily)WBC and differential (as needed)Cultures (as needed)
Monitoring: NutritionSerum Hepatic ProteinsParameter t ½ Albumin 19 days
Transferrin 9 days
Prealbumin 2 – 3 days
Retinol Binding Protein ~12 hours
Complications of PN
Refeeding syndrome Hyperglycemia Acid-base disorders Hypertriglyceridemia Hepatobiliary complications (fatty liver,
cholestasis) Metabolic bone disease Vascular access sepsis
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CONCLUSION
NUTRITION
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Thank you