Long-limb or Distal Gastric Bypass for Superobesity - Randomized Study

Long -Limb Gastric or Distal Gastric Bypass in the Treatment of Super Obese Patients - a Prospective Randomized Study

The main study objective:

To evaluate long-limb gastric bypass (150 cm alimentary limb) vs. "distal" gastric bypass (common channel 150 cm) in the treatment of superobesity (BMI 50-60 kg/m2).

The main study hypothesis:

Distal bypass accomplish an estimated 10-20 % larger weightloss than long-limb gastric bypass 1 year after surgery. Patients subject to distal bypass have more gastrointestinal side effects and more extensive nutritional deficiences compared to long-limb gastric bypass.

Technical data will later be published in detail

Inclusion Criteria:

• BMI 50 - 60 kg/m2 at admission for evaluation for bariatric surgery
• BMI 48 - 62 kg/m2 at study inclusion
• informed consent
• scheduled for bariatric surgery

Exclusion Criteria:

• previous bariatric surgery
• previous major abdominal surgery
• previous history or established urolithiasis
• viral hepatitis, liver cirrhosis of any kind
• factors making the patient not eligible to understand and commit to the study protocol (severe psychiatric disease or drug/narcotic abuse)