Nutrition Equations

*IDEAL BODY WEIGHT:
-Females:100lbs(45kg)for first 5ft(152cm)plus 5lbs(2.3kg)for each additional inch(2.54cm)
-Males:106lbs(48kg)for first 5ft(152 cm)plus 6lbs(2.7kg)for each additional inch

CALORIC REQUIREMENTS:
*Harris-Benedict Equations:
-Males:REE=66.47+13.75(IBW)+5.0H-6.76A
-Females:REE=655.1+9.5(IBW)+1.8H-4.68A

*Ireton-Jones equation for obese patients:EE=606S+9W-12A+400V+1444B
*Ireton-Jones equation for ventilator patients:EE=1925-10A+5W+281S+292T+851B

Definitions>>
*REE:resting energy expenditure in Kcal/day;needs to be corrected for stress

*EE:Energy expenditure in Kcal/day;no stress correction needed.

*IBW:Ideal body weight(Kg)
*H:Height(cm)
*A:Age(years)
*S:Sex(1=male,0=female)
*T=Trauma(0=absent,1=present)
*B=Burn(0=absent,1=present)

WEIGHT BASED CALCULATIONS:
-Usual maintainance diet:20-50 Kcal/kg/day.

-Obesity(weight loss desired):15-20 Kcal/kg/day

-Renal Disease maintainance:35 Kcal/kg/day

-Mild to Moderate illness:25-35 Kcal/kg/day

-Weight gain:40-50 Kcal/kg/day

-Sepsis,multiorgan system failure,trauma:30-35 Kcal/kg/day

-Chylothorax,head trauma:35-45 Kcal/Kg/day

-Pancreatitis,inflammatory,bowel disease:35-45 Kcal/kg/day

*ESTIMATED PROTEIN REQUIREMENTS:
-Minimal intake:0.54g/kg/day
-Cancer:1.5g/kg/day
-Recommended(RDA)intake:0.80g/kg/day
COPD with malnutrition:1.5-2.0g/kg/day
-Catabolic States:1.2-1.6g/kg/day
-Hiv Infection:1.0-1.2g/kg/day
-Multiorgan System Failure stable:1.2-1.5g/kg/day
-Stressed:2.0g/kg/day
-Renal Disease:No dialysis=0.6g/kg/day,Hemodialysis=1.2g/kg/day,peritoneal dialysis=1.2-1.5g/kg/day
-CAVHD:1.5-1.8g/kg/day
-Trauma:1.5-2.0g/kg/day
-Chylothorax:1.5-2.0g/kg/day
-Hepatic Cirrhosis:1.5g/kg/day

*FLUID REQUIREMENTS:
(1)35ml/kg body weight OR
(2)1500 ml/m2 body surface area
(3)Add 150 ml/day

References>>
American Society for Parental and Enteral Nutrition

eNutramart