The obese patient: Difference between revisions

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= Estimating Patient Weight =
= Estimating Patient Weight =
Multiple formulas to estimate weight, below are most common:
Multiple formulas to estimate weight, below are most common:
# '''Estimated male weight''' = 93.2 + 3.29[arm circumference (cm)] + 0.43[height (cm)]
# '''Estimated male TBW''' = 93.2 + 3.29[arm circumference (cm)] + 0.43[height (cm)]
# '''Estimated female weight''' = 64.6 + 2.15[arm circumference (cm)] + 0.54[height (cm)]
# '''Estimated female TBW''' = 64.6 + 2.15[arm circumference (cm)] + 0.54[height (cm)]
# '''Estimated male IBW in kg''' = height in cm - 100
# '''Estimated male IBW in kg''' = height in cm - 100
## More accurate IBW estimate:
### IBW (male) in kg = 50kg + 2.3kg for each in. over 5ft
# '''Estimated female IBW in kg''' = height in cm - 105
# '''Estimated female IBW in kg''' = height in cm - 105
## More accurate IBW estimate:
### IBW (female) in kg = 45kg + 2.3kg for each in. over 5ft
# '''Estimated LBM''' = 1.3 x IBW
# '''Estimated LBM''' = 1.3 x IBW

Revision as of 05:19, 19 August 2013

Definitions

  1. Overweight = BMI 25-29
  2. Obesity = BMI 30-39
  3. Morbid obesity = BMI 40-49
  4. Super obesity = BMI >50
  1. Total body weight (TBW)= Actual weight
  2. Ideal body weight (IBW)= Calc. based on height & weight
  3. Lean body mass (LBM)= Calc. based on subtracting body fat from TBW

Estimating Patient Weight

Multiple formulas to estimate weight, below are most common:

  1. Estimated male TBW = 93.2 + 3.29[arm circumference (cm)] + 0.43[height (cm)]
  2. Estimated female TBW = 64.6 + 2.15[arm circumference (cm)] + 0.54[height (cm)]
  3. Estimated male IBW in kg = height in cm - 100
    1. More accurate IBW estimate:
      1. IBW (male) in kg = 50kg + 2.3kg for each in. over 5ft
  4. Estimated female IBW in kg = height in cm - 105
    1. More accurate IBW estimate:
      1. IBW (female) in kg = 45kg + 2.3kg for each in. over 5ft
  5. Estimated LBM = 1.3 x IBW