Calculations: EEN, Protein, and Protein Needs Flashcards
Nitrogen Balance
[Protein Intake/6.25] - [24 hour UUN + 4] 16% of protein is nitrogen; 4 accounts for non urea N losses (skin, hair, nails, stool, etc); goal for anabolism +2 to +4 nitrogen
What percentage of protein is made up of nitrogen?
16%
Conversion factor lbs to kg
0.4545
Fluid needs: Adults kg
30-35ml/kg
Fluid needs: children
150ml/kg
Fluid needs Calculation based on caloric intake adults
1 ml/kcal
How does fluid requirements change for patients with fever?
150 ml increase/day for each degree of body temperature above normal
Infant Fluid needs calculation based on caloric intake
1.5 ml/kcal; kids have higher percentage of body water, larger surface area per unit of body weight, can’t handle higher protein loads, poor recognizers of dehydration
Identify formulas for determining calorie needs most commonly used in the hospital setting.
1) Harris Benedict Equation 2) Mifflin-St. Jeor Equation 3) kcal/kg
How does fever impact a patient’s BEE?
Raises BMR; 13% for each degree celsius or 7% for each degrees Fahrenheit
What is an appropriate Calorie:N ratio?
150:1 17% of calories from protein
What is the gold standard in determining energy needs?
Indirect Calorimetry; provides information on BEE (including the injury factor) which is then adjusted for activity; calculated using o2/co2 consumption and release, and determines cho/fat/protein utilized for energy reflective in respiratory quotient
10% lipid emulsion provides how many kcal/ml
1.1 kcal/ml
20% lipid emulsions provide how many kcal/ml
2 kcal/ml
30% lipid emulsions provide how many kcal/ml
3 kcal/ml
