RCT Comparing OAGB and Long Limb Roux Gastric Bypass

  • End date
    Dec 31, 2036
  • participants needed
  • sponsor
    Tartu University Hospital
Updated on 29 March 2021


A prospective multicenter randomized controlled trial to compare the outcomes of one-anastomosis gastric bypass to long biliary limb Roux gastric bypass.

We plan to enroll up to 500 patients from three different clinics in Estonia. Outcomes are excess weight loss %, impact on type 2 diabetes, hypertension, hyperlipidemia and obstructive sleep apnea.

Other outcomes are nutritional deficiencies, occurrence of reflux disease and impact on quality of life.

There are planned outpatient visits 1, 5 and 10 years after the surgery to measure the impacts.

There are a lot of studies comparing OAGB to standard Roux gastric bypass but non comparing it to long biliary limb gastric bypass.

Condition adiposity, Obesity, Obesity
Treatment One-Anastomosis Gastric Bypass, Long biliary limb Roux gastric bypass
Clinical Study IdentifierNCT04812132
SponsorTartu University Hospital
Last Modified on29 March 2021


Yes No Not Sure

Inclusion Criteria

BMI over 35 and obesity related disease
BMI over 40
age between 18-60 years
agrees to participate in the study

Exclusion Criteria

age under 18 years or over 60 years
abundant adhesions discovered during the surgery
active upper gastrointestinal ulcer disease
prior bariatric surgery
active symptomatic reflux disease
active psychiatric disease (eg psychosis)
Clear my responses

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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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