Clinical Research Directory

Comparing 150cm OAGB With 150cm Biliopancreatic Limb RYGB. A Non-inferiority Trial

The purpose of this study is to assess the safety and efficiency of OAGB compared to RYGB

Mindfulness Based Eating Awareness Training for Bariatric Surgery Patients

The purpose of this study is to evaluate the effects of Mindfulness Based Eating Awareness Training (MB-EAT) for patients who have had bariatric surgery on their weight and mental and physical health compared to patients who do not do this group. All participants will complete questionnaires evaluating eating and mental health before and after the group and 6 and 12 months later. They will have blood pressure readings at these times and complete a questionnaire about their digestive health. Our hypothesis is that participants will maintain their weight loss after bariatric surgery and have improvements in the other outcomes.

Rural Engagement in TelemedTeam for Options in Obesity Treatment Solutions

The purpose of this study is to compare two methods for managing obesity in rural primary care patients. The first method includes quarterly 1:1 meetings with the participant and their primary care provider and the second includes a group lifestyle intervention over Zoom paired with quarterly team meetings with the participant, their primary care provider and their lifestyle coach, the coach joining via Zoom. Investigators will evaluate which method is best at helping participants lose weight over 18 months.

Biometabolic Outcomes After Weight Loss Surgery: An Individualized Approach

Variable outcomes after weight loss surgery are likely attributable to complex, poorly understood mechanisms. Due to the significant impact that morbid obesity has on a patient's health, successful management of obesity and its related comorbid medical conditions is important and thus necessitates continued improved therapies for treating obesity. Although the mechanisms of weight loss after surgical intervention are poorly understood, improved understanding of molecular and metabolic changes that occur after weight loss surgery may offer the ability to provide targeted precision therapy for patients with morbid obesity undergoing surgical therapy. In this proposal, the investigators will combine a clinical trial whereby modifications to the gold-standard for weight loss surgery, the gastric bypass, are evaluated while simultaneously measuring molecular and metabolic changes that occur in response to these weight loss procedures. Through creating variable lengths of bypass intestine after gastric bypass, the investigators will be able to determine the effect of malabsorption on clinical outcomes and mechanisms involved in weight loss after gastric bypass. The investigators will also use two control groups. One will be a surgical weight loss control group and consist of patients undergoing a laparoscopic sleeve gastrectomy, a non-intestinal bypass procedure. The other group will consist of patients having non-surgical weight loss therapy. To asses metabolic changes that occur in response to surgical weight therapy and specifically intestinal bypass and malabsorption, the investigators will examine changes in the gut microbiome and plasma gut enteroendocrine hormones. To evaluate molecular pathways that are impacted as a result of gastric bypass and malabsorption, the investigators will measure circulating microRNAs (miRNAs) in the blood. Measurement of miRNAs will provide data on an easily measurable molecular marker for each treatment group. This is a first step in translational exploration of mechanisms of weight loss after surgery by evaluating both clinical and molecular/metabolic outcomes and begin an explorative process towards creating an individualized approach to improving outcomes after weight loss surgery.

Weight Loss and Comorbidity Outcomes After Revisional Bariatric Surgery

Some people who have had weight-loss (bariatric) surgery do not lose enough weight, regain much of the weight they lost, see obesity-related diseases such as diabetes or high blood pressure return, or develop complications of the first operation. Many of them need a second, revisional operation. This study reviews the medical records of adults who had revisional bariatric surgery between 2017 and 2025 at a single surgical centre. It describes which revisional operations were performed after each type of first operation and measures how much weight patients lost 6 months, 12 months and up to 3 years after the revision. It also records whether obesity-related diseases and quality of life improved after the revision, and looks at patient factors linked to better weight loss.

Naturally Banded Versus Synthetic Banding of Sleeve Gastrectomy

to compare banding sleeve gastrectomy using silicone ring Versus using natural flap ( round ligament of the liver)

Sleeve Gastrectomy With Jejuno-ileal Bypass Versus Single Anastomosis Sleeve Jejunal Bypass

sleeve gastrectomy with jejunoileal bypass (SGJIB) is a novel technique for the surgical treatment of obesity. The aim of the study is to compare this maneuver with single anastomosis sleeve jejunal bypass (SAS-JB)

Laparoscopic Natural Gastric Banding for Morbid Obesity

to do gastric banding using round ligament or omental flap instead of synesthetic band

Time-restricted Eating Among Pregnant Females With Severe Obesity

In the United States, a body mass index (BMI) of at least 35.0 kg/m2 affects about 15% of women of reproductive age. Severe obesity is a significant predictor of adverse perinatal outcomes including gestational diabetes mellitus, pre-eclampsia, premature birth, and at its most severe, fetal death, birth defects and a three-fold greater risk of maternal mortality. Observational studies suggest weight maintenance and even modest body fat loss and altering the maternal metabolic milieu (availability of glucose and lipids) in the gestational period may be important to reducing perinatal health risks among pregnant females with severe obesity. The proposed research aims to assess time-restricted eating in the 2nd and 3rd trimesters of pregnancy to explore the effects on maternal weight, and perinatal health outcomes compared to standard clinical care.

Bariatric Surgery and Pharmacokinetics of Venlafaxine

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on venlafaxine are investigated.

Glycemic Variability After SASI Versus Roux-en-Y Gastric Bypass

The GLUBARI trial is a prospective, randomized, single-center clinical study comparing two bariatric surgical procedures in adults with morbid obesity: Single Anastomosis Sleeve Ileal Bypass (SASI) and Roux-en-Y Gastric Bypass (RYGB). The main objective is to compare glycemic variability between the two procedures using continuous glucose monitoring. Participants will undergo continuous glucose monitoring for 7 days before surgery and again at 6 and 12 months after surgery. Secondary outcomes include hypoglycemic events, weight loss, resolution of obesity-related comorbidities, postoperative complications, gastroesophageal reflux, nutritional deficiencies, and quality of life. A total of 68 participants will be randomized in a 1:1 ratio to SASI or RYGB and followed for 12 months after surgery.

Structured Perioperative Nursing Education and Short-Term Outcomes After Metabolic Bariatric Surgery

This study evaluated whether a structured, nurse-led perioperative education program, supported by an illustrated Arabic booklet, is associated with better short-term outcomes in adults undergoing metabolic and bariatric surgery (MBS). The main outcome was eating behavior at 6 months after surgery. Other outcomes were knowledge about bariatric surgery, weight loss, quality of life, and recorded postoperative symptoms and events. Patients who received routine hospital care were compared with patients who received the structured education program.

Identification of Pre-surgical Phenotypic Indicators Predictive of Quality of Life Trajectories in Obese Patients Following Bariatric Surgery

This study aims to identify pre-operative phenotypic determinants predictive of quality of life trajectories in post-bariatric surgery patients. In addition, this study will have as a secondary objective the highlighting of a potential link between post-surgery quality of life trajectories and those of anxiety/depression scores, eating behaviors and body mass indices. This study will be conducted during the usual care of patients undergoing the GEROM73 program, lasting a total of 30 months. The GEROM73 program includes care for the six months preceding bariatric surgery and the 24 months following surgery. This program supports patients throughout their bariatric care.. Throughout the GEROM73 program, patients will complete questionnaires on anxiety, depression, eating disorders, Impact of Weight on Quality Of Life. Patients' weight, body mass index and body schema will also be measured throughout the GEROM program.

Multimodal Analgesia Effect on Post Surgical Patient

Patients undergoing Bariatric Surgery at the University of California Davis Medical Center will be divided into two groups, one receiving Standard of Care pain control medications vs the second group which will receive non-narcotic pain medications with rescue pain medications available if needed

The UFO (Ultra Processed Foods in Obesity) Project

The childhood obesity prevalence has increased dramatically in the last decades, affecting more than 340 million children worldwide. This condition is the major risk factor for a set of metabolic abnormalities, also known as metabolic syndrome, a condition that reduce life expectancy by 5-20 years. Changes in the global food system, and the increased consumption of ultra-processed foods (UPFs), may have contributed to the increase in the prevalence of childhood obesity and related morbidities. The mechanisms by which UPFs might promote obesity and metabolic syndrome could be multiple and not completely identified. The Ultra-processed Food in Obesity (UFO) Project has been designed to investigate the potential associations between UPFs intake and MetS in pediatric subjects

Postoperative Nausea, Vomiting and Pain After Bariatric Surgery - a National Registry Study

Around 4,000-5,000 bariatric (weight-loss) operations are performed in Sweden every year. Nausea, vomiting and pain are common immediately after these operations, cause considerable suffering and increase the intensity and length of hospital care. Bariatric surgery is one of the procedures with the highest risk of postoperative nausea and vomiting (PONV): about one third of patients experience PONV already in the recovery unit, and registry data indicate that around 40% report severe pain at the same stage. This study links two national quality registries - the Swedish Perioperative Register (SPOR) and the Scandinavian Obesity Surgery Registry (SOReg) - to describe how often adult patients experience nausea, vomiting and pain in the post-anaesthesia care unit after primary bariatric surgery, and to identify patient, anaesthetic and surgical factors associated with these outcomes. The study tests whether total intravenous anaesthesia, the addition of a regional nerve block, and preoperative health-related quality of life are associated with PONV and pain, and whether early PONV or pain is associated with complications, unplanned hospital care or reoperation up to one year after surgery. The results are intended to show how well current evidence on preventing PONV and pain is applied in everyday practice and where care can be improved.

Brown Adipose Tissue Activation by Spinal Cord Stimulation

The objective of this study is to investigate and utilize spinal cord stimulation (SCS) as an effective approach to eliciting weight loss and potentially alleviating Type 2 diabetes mellitus (DM), as evidenced by increasing metabolism of adipose tissue.

AJYR+GV vs RYGB for GERD

This study focuses on gastroesophageal reflux disease (GERD), a condition in which stomach acid flows back into the esophagus (the tube that carries food from the mouth to the stomach), causing heartburn and other symptoms. GERD is common among people with obesity.The standard surgical treatment for these patients is Roux-en-Y gastric bypass, a surgery that makes the stomach smaller and reroutes part of the digestive tract. This procedure promotes weight loss and usually improves reflux. However, recent studies show that up to 20% of patients continue to have, or develop, reflux after this surgery. Untreated reflux can seriously impair quality of life and may lead to complications such as esophageal ulcers and esophageal cancer. In addition, the bypass leaves parts of the digestive tract that cannot be examined with routine endoscopy, which may make it harder to detect cancers in those areas in the future.This study will compare the standard gastric bypass with a newer procedure that combines sleeve gastrectomy (removal of most of the stomach, leaving a narrow tube) with a Roux-en-Y antrum-jejunal anastomosis (a connection between the lower part of the stomach and the small intestine). This new technique may control reflux as effectively as the bypass while keeping the whole digestive tract accessible to endoscopic examination.Adults with obesity and GERD who are candidates for bariatric surgery may participate. Participants will be randomly assigned (by chance, like a coin flip) to receive one of the two procedures. The main goals of the study are to evaluate whether the new technique treats or controls reflux as well as, or better than, the standard bypass; to compare weight loss between the two procedures; to compare changes in metabolism (how the body processes sugar and fats); to check whether the duodenum (the first part of the small intestine) can be easily examined by endoscopy after the new procedure; and to understand how food moves through the digestive tract after the new procedure.

Bariatric Surgery and Pharmacokinetics of Lamotrigine

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on lamotrigine are investigated.

Bariatric Surgery and Pharmacokinetics of Valsartan

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on valsartan are investigated.

Bariatric Surgery and Pharmacokinetics of Losartan

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on losartan are investigated.

Bariatric Surgery and Pharmacokinetics of Metoprolol

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on metoprolol are investigated.

Bariatric Surgery and Pharmacokinetics of Paracetamol

Changes to gastric pH, gastric emptying time, gastrointestinal transit-time or the pre-systemic metabolizing effect of enzymes secreted in the mucosa may all alter the pharmacokinetics of medicines. These factors are potentially influenced by bariatric surgery. Little is so far known about how gastric bypass and sleeve gastrectomy impacts the biological availability of medication. In this study the pharmacokinetic effects of bariatric surgery on paracetamol are investigated.

Postextubation Use of Noninvasive Respiratory Support in Severely Obese Patients

Around 20% of the obese patients with higher body mass index (BMI) who are taken off the breathing tube and breathing machine (ventilator) end up needing it back to support breathing. The re-application of breathing tube is associated with poor outcomes, including high risk of pneumonia, longer hospital stays, and death. The purpose of this study is to assess if prophylactic use of noninvasive breathing support after removing the breathing tube lowers the chance of needing the breathing tube again.