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Calculator: Weight loss indices following bariatric surgery in adults


Calculator: Weight loss indices following bariatric surgery in adults

 
Input
 
Initial (prebariatric surgery) height  
Initial (prebariatric surgery) weight  
Postoperative weight  

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
Ideal body weight  
Initial BMI   kg/m2
Postoperative BMI   kg/m2
TBWL  
%TBWL  
%EBWL  
%EBMIL  
 
Decimal precision  

 
 

 
Notes
  • Ideal body weight, as used in this calculator, is derived from an ideal BMI of 25 kg/m2 as defined in reference.[1]
  • Excess body weight is weight greater than the ideal body weight.
  • Excess BMI is the initial (preoperative) BMI that exceeds 25 kg/m2.
  • BMI: body mass index; TBWL: total body weight loss; EBWL: excess body weight loss; EBMIL: excess body mass index loss.

 
Equations used
 
Ideal body weight = 25 * ((Initial (prebariatric surgery) height/100)2)
Initial BMI = Initial (prebariatric surgery) weight / (Initial (prebariatric surgery) height/100)2
Postoperative BMI = Postoperative weight / (Initial (prebariatric surgery) height/100)2
TBWL = Initial (prebariatric surgery) weight - Postoperative weight
%TBWL = 100 * (Initial (prebariatric surgery) weight - Postoperative weight) / Initial (prebariatric surgery) weight
%EBWL = 100 * (Initial (prebariatric surgery) weight - Postoperative weight) / (Initial (prebariatric surgery) weight - Ideal body weight)
%EBMIL = 100 * (Initial BMI- Postoperative BMI) / (Initial BMI - 25)

 

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

Legal Notices and Disclaimer

All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.

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