#weight calculation

BMI = (weight in kg)/(height in m)squared Papy type BMI: 22.4 (based on 6ft, 165lb male in mid-twenties) Sans type BMI: 32.2 (based on 5ft, 165lb male in mid thirties)

Skeleton is avg 14% of total weight.

Avg lamia tail = standing height plus 1/3 (based on drawing scales). Short lamia tail = standing height (or less). Long lamia tail = standing height times two plus 1/3.

Height in feet/3.28 = height in m.

To calculate lamia weight-

(height in m) squared * Papy or Sans BMI = (weight in kg)

(weight in kg) * 2.2 = (weight in lbs)

Skeleton weight = (weight in lbs) * .14

Tail weight = (weight in lbs) + 1/3 <dependent on tail length

Full Weight = Skeleton + Tail weight.

Ex. Chain type lamia, long tail, standing height 10ft, tail length 23 ft (long). Chain = Papy type BMI.

10ft/3.28=3.0487

(3.0487) squared * 22.4 = 208.209

208.209 * 2.2 = 458.06 lbs

458.06 * .14 = 64.128 (skeleton weight)

458.06 * 3/10 = 137.418 lbs

10 + 10 + 3 = tail length = 458 + 458 + 137 = 1053lbs (tail weight)

Mifflin-St. Jeor is for resting energy expenditure.

Mifflin-St. Jeor for men: (10*weight in kg) + (6.25*height in cm) – (5*age) + 5

Mifflin-St. Jeor for women: (10*weight in kg) + (6.25*height in cm) – (5*age) - 161

 Ideal body weight is based on historical body weight that compares the relative disease risk and life expectancy of individuals of different height-weight combinations, the weight-for-height that correlates with the lowest mortality.

Ideal body weight for females is 100lbs for a height of 5 feet, plus 5lbs for each additional inch.

For males, ideal body weight is 106lbs for a height of 5 feet, plus 6 pounds for each additional inch.

% Ideal Body Weight: (actual body weight/ideal body weight) × 100%

 Adjusted body weight should be used for obese patients as not to over- or underestimate feeding. Adjusted body weight can be calculated for those with an actual body weight that is greater than 115% of the calculated ideal body weight.

Adjusted Body Weight: [(actual body weight – ideal body weight) × 0.25] + ideal body weight

Feed at 25-30 kcal/kg Adj BW if BMI <30 kg/m2

Feed at 20-25 kcal/kg Adj BW if BMI >30kg/m2

 % Usual Body Weight: (actual body weight/usual body weight) × 100%

  % Weight Change: (amount of weight lost or gained/usual body weight) × 100%

 Ideal Body Weight: (See Hamwi method)

 Stress  or Activity level

Hamwi Method of Ideal Body Weight for Females: 100lbs for a height of 5 feet plus 5 pounds for each additional inch

Hamwi Method of Ideal Body Weight for Males: 106lbs for a height of 5 feet plus 6 pounds for each additional inch

For women UNDER 5', subtract 5lbs for each inch under 5'.

For men UNDER 5', subtract 6lbs for each inch under 5'.

Factor

Bed  rest 1  – 1.2 [hospitalized]

Ambulatory 1.3

Minor surgery 1.1-1.3

Mild stress 1.1-1.2

Moderate stress 1.3-1.5

Infection 1.3

Fracture 1.3

Major surgery 1.5

Major trauma/sepsis 1.5-1.7

Burns 1.5-2.0

Nitrogen balance = Nin – Nout

 Protein: 0.8-1 g/kg (normal)