Displacement of the Intragastric Balloon from the Fundus to the Antrum Results in Enhanced Weight Loss.

Background: The BioEnterics Intragastric Balloon [BIB] is a reliable, non-invasive technique to manage obesity for subjects who refuse or are unsuitable for bariatric surgery. In a prior study, BIB placed in the antrum [A] was found to have significantly better results on weight loss in relation to that in fundus [F], but many balloons initially placed in the F were eventually found in the A. The aim of the present analysis was to evaluate whether the balloon position [firmly in F, firmly in A, or transient from F to A [FA]] influences the 3- and 6-month weight loss.

Material: Six hundred sixty-eight patients that underwent successful BIB treatment were assigned into three groups: group F [n = 354], group A [n = 159], and group AF [n = 155]. Weight loss parameters were recorded and analyzed at 3 and 6 months.

Results: In all three groups, there was a significant, progressive reduction of BMI at 3 and 6 months. At 6 months, BMI reduction between groups F and A, and F and FA [p = 0.001] and groups A and FA [p = 0.018] was prominent.

Conclusion: The position of the BIB affects its effectiveness: better results when antrum is involved. This observation seems to give a great perspective to newly established gastric space-occupying devices, which aim to have a compartment constantly present in the antrum. However, further studies have to be performed in order to validate the results and more importantly to clarify the mechanisms implied.