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H. pylori is an infection of the stomach that can cause chronic gastritis, gastric cancer and peptic ulcer disease. The goal of this study is to screen people for this infection and offer treatment for those who test positive for the infection. By treating those who are positive for H. pylori, there is an opportunity to prevent gastritis, peptic ulcer disease, and even gastric cancer.

Peroral endoscopic myotomy (POEM) is an effective, minimally invasive treatment for achalasia, offering excellent rates of symptom relief. However, a significant drawback is the high incidence of gastroesophageal reflux disease (GERD) following the procedure. One proposed technical modification, the selective preservation of the sling fibers during gastric myotomy (SFP-POEM), may reduce this risk without compromising efficacy as compared to a conventional POEM procedure, which includes myotomy of the sling fibers. In this study, adults with achalasia will be randomly assigned to receive one of the two POEM technical approaches. Researchers will monitor whether preserving sling fibers reduces the rates of reflux esophagitis (classified as Los Angeles Grade B or higher) on follow-up endoscopy. Participants will be followed for up to 1 year after the procedure.

The goal of this clinical trial is to find out how well linaprazan glurate can heal erosive esophagitis (EE) caused by gastroesophageal reflux disease (GERD), compared to lansoprazole, a commonly used medication. Researchers will also evaluate whether linaprazan glurate: * Reduces heartburn symptoms more effectively than lansoprazole * Is safe and well tolerated, based on physical exams, blood tests, and vital signs (heart rate, blood pressure, temperature, and breathing rate) * Causes any side effects during treatment * Has different effects depending on how much of the drug is in the blood * Works differently depending on participants' genes Participants must be between 18 to 80 years old and have EE due to GERD confirmed by an endoscopy. Participants cannot join if they have an active Helicobacter pylori (HP) infection or were treated for HP in the past 6 weeks or have taken antibiotics or bismuth-containing drugs in the past 6 weeks. The study is a randomized, double-blind, active comparator-controlled trial lasting up to 4 months. Randomized means that participants are assigned by chance (like flipping a coin) to one of the treatment groups and double-blind means neither the participants nor the study team will know which treatment is given. Participants will be placed into one of three groups (about 167 people in each group): * Linaprazan glurate 50 mg twice a day * Linaprazan glurate 50 mg once a day * Lansoprazole 30 mg once a day Everyone will take 2 tablets and 1 capsule by mouth daily for 8 weeks. Some tablets or capsules will be placebos (look like medicine but contain no active drug). Participants will: * Undergo an endoscopy in the beginning and after 4 weeks of treatment * If healing is not observed, another endoscopy may be done at 8 weeks * During the procedure, doctors will use a thin, flexible tube with a camera to look at the esophagus and take small tissue samples (biopsies) * Have blood and urine tests at clinic visits to check overall health * Receive electrocardiograms (ECGs) to monitor heart function * Complete daily questionnaires on an electronic device about symptoms and experiences

This is a two-site randomized clinical trial aiming to test whether a modified investigational bariatric surgical procedure can improve gastroesophageal reflux disease (GERD) after sleeve gastrectomy.

The objective of the study is to investigate the treatment of marginal ulcers with Low Thermal plasma in an endoscopic setting. By a treatment of the ulcerated areas with argon plasma with low power settings (\~ 1 W) we hypothesize that the size of the ulcers will shrink, and the healing is accelerated compared to standard of care alone. Patients will benefit from this minimally invasive approach compared to a much more invasive surgical approach that comes with higher risks and hospital stay length time. From a societal and scientific perspective, this study aims to extend the well-documented clinical benefits of plasma technology - from external wound healing to internal ulcer treatment - within an endoscopic framework. The success of this study could pave the way for broader applications of LTP in the treatment of other endoscopically accessible conditions such as peptic ulcers, duodenal ulcers and esophageal ulcers. This advancement has the potential not only to improve patient outcomes through less invasive methods, but also to position LTP as a cornerstone in the future of gastroenterological wound management strategies.

The objective of the study is to investigate the efficacy and safety of an argon plasma-based therapy - HEAPE - in treating H. pylori infections during endoscopic procedures. By filling the stomach with sodium chloride solution that is treated with APC (PAL), the Investigators hypothesize a significant reduction in H. pylori. The use of PAL instead of direct application of APC allows for a broader and more homogeneous application throughout the stomach and a faster procedure time, as the fluid bypasses the thermal effects typically associated with higher electrical power settings and focuses on the bactericidal action of PAL. It is a procedure that does not involve thermal ablation of the stomach lining. Thus, side effects should be expected to be as low as possible. Two different PAL generation modalities will be compared in this study: 1. HEAPE direct: This modality is the direct generation of PAL in the stomach. The stomach is filled with sodium chloride solution which is then treated with APC. With HEAPE direct a potential decrease of reactive species is avoided, as the treatment happens directly at the intended location in the H. pylori infected stomach. 2. Pre-HEAPE: This modality features the treatment of sodium chloride with APC outside of the patient in a sterile container. After the APC treatment, the generated PAL is administered into the stomach with a syringe through the working channel of the endoscope. Pre-HEAPE allows an easier handling of the APC probe as the treatment of the sodium chloride solution can be done without an endoscope. To evaluate the immediate effect of this novel treatment approach the metabolic activity of H. pylori will be assessed using a urea breath test (UBT) before and after treatment. A reduction in H. pylori levels can be detected by a reduction in urease activity in the breath test. After the HEAPE procedure, patients are treated with antibiotics (best practice) as they would be under normal circumstances. Four weeks after treatment, another UBT is performed to determine if H. pylori has been eradicated or if additional antibiotic treatment is indicated. This two-arm, randomized, pilot, single-center, prospective clinical study is designed to evaluate the safety, tolerability and proof of concept that PAL has the ability to eradicate or reduce the bacterial load of H. pylori in humans.

This trial uses a special imaging technique with a dye to help doctors see blood flow during gastric bypass surgery. It aims to reduce complications like ulcers and leaks by ensuring good blood flow at surgical connections. The study focuses on patients having this type of weight-loss surgery.

The goal of this clinical trial is to compare whether the use of Ovitex mesh provides superior reduction in 2-year recurrence compared to pledgeted suture closure (no mesh) for patients undergoing paraesophageal hernia repair at the Cleveland Clinic. The main questions it aims to answer are: * Determine whether there is a difference in 2-year rates of radiographic recurrence with Ovitex versus pledgeted sutures in paraesophageal hernia repair. * Assess patient quality of life (QOL) after paraesophageal hernia repair with pledgets and mesh. A two-tailed research hypothesis will be used to determine whether there are differences between the two arms

This early phase I trial studies the guanylyl cyclase C (GCC) agonist effect on cGMP signal in duodenal tissue. Plecanatide and linaclotide are drugs approved by the Food and Drug Administration for the treatment of conditions related to constipation. This trial aims to see the effects of taking either one of two drugs, plecanatide or linaclotide, or no drug, on a certain chemical found in the tissue collected from small intestine and how they compare.

The purpose of this study is to investigate the efficacy of performing a truncal vagotomy along with a sleeve to bypass revision surgery in reducing the severity and/or incidence of gastroesophageal reflux disease (GERD) post-surgery.

This trial compares two treatments, TIF and LNF, for patients with acid reflux and a hiatal hernia who are having hernia repair surgery. TIF is a non-surgical procedure done through the mouth, while LNF is a minimally invasive surgery. Both aim to stop acid reflux by improving the valve between the stomach and esophagus.

The purpose of this program is to allow the use of domperidone in children from 12 to 21 years of age with symptoms related to motility disorders and Gastroesophageal reflux disease (GERD) who have failed all the standard treatments for their condition.