Background There is currently little evidence available on the
perioperative practices concerning one anastomosis/mini gastric
bypass (OAGB/MGB) and no published consensus
amongst experts. Even the published papers are not clear on
these aspects. The purpose of this study was to understand
various perioperative practices concerning OAGB/MGB.
Methods Bariatric surgeons from around the world were invited
to participate in a questionnaire-based survey. Only surgeons
performing this procedure were included.
Results Two hundred and ten surgeons from 39 countries with
a cumulative experience of 68,442 procedures took the survey.
Surgeons described a large number of absolute (n = 55) and
relative contraindications (n = 59) to this procedure in their
practice. Approximately 71.0% (n = 148/208), 70.0%
(n = 147/208) and 65.0% (n = 137/209), respectively, routinely
perform a preoperative endoscopy, screening for
Helicobacter pylori and ultrasound scan of the abdomen. A
minority (35.0%, n = 74/208) of the surgeons used a constant
bilio-pancreatic limb (BPL) length for all the patients with
remaining preferring to tailor the limb length to the patient
and approximately half (49.0%, n = 101/206) routinely approximate
diaphragmatic crura in patients with hiatus hernia.
Some 48.5% (n = 101/208) and 40.0% (n = 53/205) surgeons,
respectively, do not recommend routine iron and calcium
supplementation.
Conclusion This survey is the first attempt to understand a
range of perioperative practices with OAGB/MGB. The findings
will help in identifying areas for future research and allow
consensus building amongst experts with preparation of
guidelines for future practice.

EB00000002255K

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• Perioperative Practices Concerning One Anastomosis (Mini) Gastric Bypass: A Survey of 210 Surgeons