1.1 Justification
Regarding the use of the gastric retaining ring, although less frequent,
it is not uncommon to diagnose some complications related to its use,
especially with regard to food intolerance and erosion.
The treatment with balloon dilators, despite having some indications
similar to those of stents, provide their rupture without extraction of
the ring, which can cause other complications. In addition, there is a
correlation with weight regain due to the increase in gastrojejunal
anatomy when it involves the dilation procedure. The treatment with
stents, although more recent, is effective, safe and has significant
success rates. Currently, we only have metallic stents on the market,
however for many years plastic stents have been used to extract the
gastric containment ring, and there is no meta-analysis study in this
segment.
Considering that the endoscopic treatment of complications of the
gastric containment ring with the use of stents is already a
well-established therapeutic modality in the literature and is a less
invasive alternative with a satisfactory success rate, this study aims
to characterize the performance of both in a comparative way stents, in
the last decade, in relation to clinical resolvability, treatment time
and complications in patients previously submitted to Roux-en-Y gastric
bypass.