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Perioperative Considerations for the Morbidly Obese Patient

      Obesity is defined as an abnormally high percentage of body fat (greater than 20%). The most accepted measure of obesity is the body mass index (BMI), because it best correlates with the amount of adiposity and is easy to measure [
      National Institute of Health Consensus Development Conference Panel
      Gastrointestinal surgery for severe obesity.
      ]. It is defined as the ratio of weight (in kilograms) over the height (in meters) squared (BMI = kg/m2). Patients are considered overweight if the BMI is between 25 and 29.9, obese if the BMI is between 30 and 39.9, morbidly obese if the BMI is between 40 and 49.9 and supermorbidly obese if the BMI is 50 or greater [
      • Levi D.
      • Goodman E.R.
      • Patel M.
      • et al.
      Critical care of the obese and bariatric surgical patient.
      ].
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