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4 clinical studies listed.
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Tundra lists 4 Gastric Bypass clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT04832282
Napoleon Measurement of Gastrojejunal Anastomosis
This is a clinical trial assessing the feasibility of the Napoleon device for measuring the gastrojejunal anastomosis (GJA). The study population is Roux-en-Y gastric bypass (RYGB) patients with weight regain undergoing an endoscopy at Bellevue Hospital Center or Brigham and Women's Hospital. investigators aim for a sample size of up to 100 cases. For each case, endoscopists will first visually estimate the diameter of the GJA by comparing its size to the upper endoscope. Then, they will measure the GJA with Napoleon. Investigators will compare the GJA measurements performed using visual estimation and Napoleon. A survey will be given to all endoscopists to assess the level of ease using Napoleon.
Gender: All
Ages: 18 Years - 90 Years
Updated: 2025-12-23
2 states
NCT05640947
Endoscopic Ultrasound-guided Large Diameter Lumen-apposing Metal Stent Gastro-gastrostomy for Bypass Reversal in Patients With Roux-en-y Gastric Bypass
The primary objective of this open-label pilot study is to investigate whether an endoscopically placed lumen apposing metal stent is an effective alternative to surgery in patients that have a clear indication for reversal of their gastric bypass.
Gender: All
Ages: 18 Years - Any
Updated: 2025-10-08
NCT05357443
SH Dr. Chen Gastric Bypass Study
Evaluation of serum gastrin levels and their effect on marginal ulcer formation.
Gender: All
Ages: 18 Years - Any
Updated: 2025-09-30
1 state
NCT02823665
The Effects of Bariatric Surgeries on Glucose Metabolism
The purpose of this study is learn the effect of gastric bypass surgery and sleeve gastrectomy on glucose metabolism mediated by neural and hormonal factors initiated after eating.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2025-09-09
1 state