BMI FORMULA
BMI TABLE
FACTOIDS
SURGICAL APPROACHES
SURGICAL CRITERIA
BMI CALCULATION
704.5 X Weight in Pounds ÷ Height in inches ÷ Height in inches = BMI
Example 1
Weight of 150 lbs, Height of 5' 6"
704.5 x 150 ÷ 66" ÷ 66" = 24.25
BMI 24.25
Example 2
Weight of 220 lbs, Height of 5' 6"
704.5 x 150 ÷ 66" ÷ 66" = 35.58
BMI 35.58

CLASSIFICATION BY BMI

CLINICAL CLASSIFICATION

OBESITY CLASS

BMI (KG/m2)
Underweight

-

< 18.5
Normal range

-

18.5-24.9
Overweight

-

25.0 - 29.9
Obesity

I

30.0 - 34.9
Morbid obesity

II

35.0 - 39.9
Extreme obesity

III

40 and above

FACTOIDS
- 60% of US adults are overweight and obese.
- 8 to 12 million, 3% to 5% are morbidly obese.
- Mortality increases exponentially from 40 BMI and upwards.
- $50 billion is spent annually in treating problems related to excess weight and obesity.
- Another $32 B is spent on OTC diet products and weight-loss programs.
- The long-term success rate for medical management (diet, behavior modification and appetite suppresants) is only 5% for the morbidly obese.

SURGICAL APPROACHES
Jejunoileal Bypass
Biliopancreatic Diversion
Vertical-Banded Gastroplasty
Gastric Bypass
Laparoscopic Gastric Bypass
Laparoscopic Adjustable Gastric Banding

CONSENSUS CRITERIA FOR OBESITY SURGERY
BMI 40 or over; >35 in the presence of 1 or more obesity-related medical or physical problem
Failed attempts at weight reduction efforts (diet, exercise, counseling, pharmacotherapy)
No history of alcohol or substance abuse
Realistic expectations of outcomes

SOURCE
Surgical Management of Obesity. Thomas Magnuson, MD
Johns Hopkins University School of Medicine
Advanced Studies in Medicine, p 195-204, Vol3 No4, April 2003
www.JHASIM.com

Lists & Tables