A. Estimating the Desirable Body Weight ( DBW ) Infants : a. First 6 months DBW (gms ) = Birth weight (gms) + ( Age in months x
600 ) 7 to 12 months . DBW (gms) = Birth weight (gms ) + ( Age in
months x 500 )
◦ DBW ( kg ) = ( Age in months divided 2 ) + 3
INFANT’S WEIGHT -doubles at 5 to 6 months
triples at 12 monthsquadruples at 24 months
HEIGHT OR LENGTH = increases by 24, 12, and 8 cm during the first, second and third year, respectively, then by 4 cm every year thereafter up to the eight years.
Children DBW (kg) = ( Age in years x 2 ) + 8
+ 2 kg for every year Adultsa. Body Mass Index – Based Formula
*For men 5 feet ( 1.52 cm ) tall, DBW =112 lbs(51kg )
*For women 5 feet( 1.52 cm) tall, DBW = 106 lb (48kg)
* For both sexes, add 4 lbs ( 1.8 kg ) for every inch above 5 feet
b. Alternative Methods
* Tannhauser’s MethodMeasure height in centimeters
Deduct from this the factor 100, answer is the DBW ln kg.DBW (kg) obtained applies to Filipino status by taking off
10%.
* Adapted method - For 5 ft used 106 lbs. For every inch above 5 ft, add 5 lbs.
1. Infants : TER = 120 – 110 kcal / KDBWChildren:TER / day = 1000 + ( 100 x age in years )
Adolescents13 – 15 = 55 ( boys ) 45 ( girls )16 –19 = 45 ( boys ) 40 ( girls )
4. Adults: Basal Metabolic needs = 1 cal/K DBW/ hr + Physical Activity = % above basal Method I ( Cooper et al ) Method II ( Krause
) Bed rest 10 % 27.55 % Sedentary 30 30 Light 50 35 Moderate 75 40 Heavy 100 45
Pregnant women: TER / day = Normal requirement + 300 kcal
Lactating womenTER /day = Normal requirement + 500 Kcal
Method I – by percentage distribution Carbohydrate50 – 70 % or average of 60% Protein Infants 10%ChildrenAdolescent
Adults 10 – 12%
FatNormal adults 20-25 %Children, adolescents 30- 25%
Method II – Determine the protein calories first according to the normal allowance in
gm/ k DBW, then divide the non=protein calories ( NPC) ito
Carbohydrate = 55 – 80 % or an average of 70%
Fat = 20 - 45 % or an average of 30%
Normal protein allowance / day: Infant 1.6 gm / KDBWChildren 1.5Adolescents 1.2 Adults 1.1