One-anastomosis Gastric Bypass/Mini-Gastric Bypass Versus Roux-en Y Gastric Bypass
One-anastomosis Gastric Bypass/Mini-Gastric Bypass Versus Roux-en Y Gastric Bypass
The aim of this prospective randomized controlled trial is to compare the two procedures
 One-anastomosis gastric Bypass/Mini-gastric Bypass (OAGB/MGB) and Roux-en Y gastric bypass
 (RYGB) in relation to intraoperative and postoperative complications (classification of
 Clavien-Dindo), mortality, metabolic impact (remission of type 2 diabetes mellitus,
 hypertonus, gastro-esophageal reflux disease, sleep apnea, dyslipidemia, quality of life,
 operation time, postoperative excess weight loss, malnutrition and re-do/revisonal surgery.
OAGB/MGB is gaining popularity as a primary surgical treatment for morbid obesity due to
 reduced operation time, a shorter learning curve, better weight loss, higher metabolic impact
 and fewer major complications compared to RYGB.

 In this prospective randomized controlled trial we want to compare OAGB/MGB and RYGB with a
 FU of up to 24 month.

 Patients with indication for gastric bypass get randomized in group A (RYGB, n = 50) or B
 (OAGB/MGB, n = 50). FU is performed 1, 3, 6, 12 and 24 month after surgery.
Inclusion Criteria:

 1. primary obesity surgery and indication for gastric bypass

 2. age: 18 - 65 years

 3. BMI > 40 kg/m² or BMI > 35 kg/m² with obesity related comorbidities

 4. informed consent

 Exclusion Criteria:

 1. obesity surgery in the anamnesis

 2. visceral surgery in the anamnesis (excluding appendectomy and cholecystectomy)