Stephen Firkins
The goal of this clinical trial is to compare two variations of the same procedure used to assist with weight loss in patients who have a history of Roux-en-Y gastric bypass who have experienced weight regain. The procedure being studied is called the Transoral Outlet Reduction (TORe), and the trial will compare two different ways to complete the TORe procedure. The main question\[s\] it aims to answer are: * Which variation of the TORe procedure results in more weight loss? * Which variation of the TORe is safer? Participants who are eligible and willing to undergo the TORe procedure to assist with weight loss will have the procedure completed either one of the two ways. All other care will be exactly the same between the two groups. Researchers will compare outcomes between the two procedure variations, looking at which one results in more weight loss, is more successful, and safer.
Weight regain after having a Roux-en-Y gastric bypass is common. One of the primary reasons for weight regain after bypass is stretching out or "dilation" of the surgical connection created between what is left of the stomach and the small intestine (called the anastamosis). As the ability to suture with the help of a scope inserted through the mouth into the stomach instead of surgery, the transoral outlet reduction (TORe) was developed. The TORe involves suturing around the stretched out anastamosis, allowing it to be pulled tighter and shrink down, resulting in weight loss, and is an entire…
Inclusion Criteria: * Adult patients with history of Roux-en-Y gastric bypass and weight regain * Dilated gastrojejunal anastamosis as diagnosed on endoscopy * Patients undergoing standard of care for treatment of obesity with endoscopic revisional procedure (a.k.a. TORe) who are enrolled in the GI Bariatric Endoscopy program and clinic at the study site Exclusion Criteria: * Prior revision of gastric bypass * Active and uncontrolled gastro-esophageal reflux disease defined as ≥ grade C esophagitis * Active untreated Helicobacter pylori infection * Malignancy newly diagnosed by endoscopy *…
The E-TORe utilizes ESD in addition to APC prior to endoscopic suturing. In this approach, a standardized solution of normal saline or hetastarch mixed with methylene blue and epinephrine is injected into the gastric rim of the GJA outlet. The mucosa is then carefully incised to expose the underlying muscular layer for a width of approximately 1cm around the GJA circumference. Following ESD, APC is then applied to the inner and outer mucosal margins of the ESD tract. Finally, endoscopic sutures are then placed in purse string fashion and cinched closed around a 6mm TTS balloon.
The c-TORe will be completed utilizing APC prior to endoscopic suturing. In this approach, the gastric rim of the anastomosis is circumferentially ablated using APC (forced APC, flow of 0.8 L/min and power of 30-70 watts) extending an average of 1-2 cm from the outlet. Following ablation, endoscopic sutures are placed in a purse string fashion within the ablated area and the outlet cinched closed over a 6mm through-the scope (TTS) balloon.
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