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56 active trials for Bariatric Surgery

Supplementation After Bariatric Surgery

The aim of this study is to assess medication adherence to vitamin and mineral supplements after bariatric surgery and identify factors that may influence adherence. All study participants are prescribed life-long treatment with daily oral vitamin B12 and Calcium/Vitamin-D. Menstruating women are also prescribed daily oral iron supplementation. Post-operative adherence rate is retrieved from Pharmacy refill data, collected from the Swedish Prescribed Drug Register, the five first years after bariatric surgery.

Start: May 2017

Obesity Cohort Bichat Louis Mourier

Obesity prevalence rapidly increased in the past decades in French population with multiple health consequences responsible for excess mortality. In the same period of time, the number of bariatric procedures have developed exponentially. Despite its great efficacy on weight loss but also on resolution of comorbidities, bariatric surgery is not without risks. Our hypothesis is that a better understanding of the physio-pathological consequences of obesity and bariatric surgery, notably on the gastrointestinal tract, may allow to improve the treatment of obesity and to find alternatives to bariatric surgery. The main objective of this cohort study is to systematize the collection and the conservation of biological samples (blood, stomach, liver, intestine, adipose tissue) obtained during bariatric surgery, in obese subjects undergoing surgery (including sleeve gastrectomy, Roux-en-Y gastric bypass, or revisional intervention for complication or weight regain) in the University Hospital group of Paris Nord Val de Seine (HYPNVS). The main projects that will build on this cohort will cover the physiopathology of obesity and its consequences, notably in the field of gastrointestinal tract including: modification of gastro-intestinal plasticity in severe obesity and after bariatric surgery and alterations of absorption of nutriments (lipids, proteins, carbohydrates) induced by obesity and bariatric surgery. The inclusion in this project of obese subjects before surgery, or lean or obese subjects after surgery will allow to distinguish the impact of weight loss and surgery on gastrointestinal remodeling. This cohort will also allow to characterize stomach and intestinal proteome in severe obesity and to precise the influence of tissue inflammation on metabolic disorders associated with obesity.

Start: February 2018

Patient Reported Outcome After Bariatric Surgery

Prospective association study to analyse patients' outcome after bariatric surgery. Outcome comprises postoperative pain, analgesia, postoperative side-effects, long-lasting pain, patients' impairment in daily living.

Start: January 2011

The Impact of the Hypnosis on the Loss of Weight at Patients in Failure of Bariatric Surgery

The therapeutic problem of obesity is weight control, a major difficulty, involving a significant change in eating behavior. A number of studies show that there are many factors of resistance to weight loss whether they are physiological, genetic, environmental pressure related, or psychological and behavioral. For some patients, the surgical approach seems the best alternative. Indeed, bariatric surgery is an effective therapeutic weapon in patients with morbid obesity. However, it has been shown that approximately 25% of patients are failing at two years of this surgery (Reinhold's index). Some of the failed subjects may benefit from surgical revision. As for the others, no intervention is currently proposed to them. Studies have shown that the psychological profile of patients who are candidates for bariatric surgery is predominantly impulsive, very anxious with a tendency to depression. The stress level of these patients would be important, and they would have low self-esteem. This study hypothesize that, in these patients, the establishment of hypnotherapeutic management associated with the usual dietary monitoring could modify eating habits thus promoting weight loss and an improvement in self-esteem , stress and anxiety compared to dietary monitoring alone.

Start: March 2019

Laparoscopic Single Anastomosis Sleeve Ileal Bypass Versus Laparoscopic Sleeve Gastrectomy For Morbidly Obese Patients

Evaluation of the advantages, disadvantages and complications of a recently innovated procedure (Single anastomosis sleeve ileal "SASI" bypass) of the more traditional laparoscopic sleeve gastrectomy "LSG"

Start: July 2018

Bone Health After Bariatric Surgery in Patients With Type 2 Diabetes

Background: Bone fragility is a complication of type 2 diabetes. Diabetes treatments may ameliorate or deteriorate bone fragility in this population. Bariatric surgery is gaining in popularity in people with type 2 diabetes and may impact bone health. Objectives: To evaluate the impact of the 2 most popular bariatric procedures worldwide (SG, RYGB) on vBMD by QCT in patients with type 2 diabetes; Secondary aims: (1) to identify the determinants of vBMD after bariatric surgery in patients with type 2; (2) to compare vBMD and its potential determinants after bariatric surgery with controls with a normal BMI and normoglycemia ; (3) to compare changes in vBMD and its potential determinants after SG (the most popular bariatric procedure) with obese controls without diabetes. Exploratory aims: (1) to evaluate the prevalence and incidence at one year of falls as well as vertebral and non-vertebral fractures after SG and RYGB; (2) to evaluate bone microarchitecture and metabolism by iliac crest bone biopsy in patients with obesity, with or without type 2 diabetes, before SG.

Start: March 2018

The Effect of Bariatric Procedures on Gut Microbiota in Obese Individuals in United Arab Emirates and Lebanon

Overweight and obesity are worldwide health problems that can affect negatively quality of life. With increasing prevalence of obesity and the failure of compliance to lifestyle, bariatric surgeries have become the treatment of choice to help achieve long term sustainable weight loss. In some cases of bariatric surgery, weight loss stops and there are cases in which obesity manifests itself again; the mechanism underlying the re-appearance of obesity is not known. Recently, the gut microbiota, has been implicated in the etiology of obesity and metabolic syndrome due to its important role in digestion, metabolism and regulating gut peptides and hormones. In accordance with this, it has been shown in mice that obesity can be associated with dysbiosis (Imbalance in gut bacteria) and there has been successful reduction of weight in interventions when microbiota was manipulated. Hypothesis: Emirati participants will have unique microbiota and gut peptides when compared to Lebanese participants. The microbiota and gut peptides variability is significantly different between those with normal weight compared to obese participants undergoing bariatric surgery. The bariatric procedure will have a significant effect on the variability of microbiota, gut peptides, blood chemistry, dietary intake and metabolism among the obese participants. Objectives of the study: Determine the gut microbiota composition of Emirati healthy normal weight participants and compare to that of Lebanese via Illumina sequencing NGS (Next Generation Sequencing of the 16S rRNA gene) of the microbiota from the stool samples. Determine the gut microbiota composition of Emirati obese participants and compare to that of Lebanese counterparts using NGS. Determine the effect of bariatric procedure in UAE and Lebanon respectively on gut microbiota (using NGS), gut peptides in plasma, blood chemistry and metabolism using indirect calorimetry and food intake. Importance of this research: The microbiota and gut peptides variability is determined by body weight and ethnicity of the studied populations. It is hypothesized that bariatric surgery will have a significant effect on the variability of microbiota, gut peptides, blood chemistry, dietary intake and metabolism. This study will be a pioneering research in UAE and Lebanon to assist in finding population tailored therapeutic strategies that target the gut microbiota and treat obesity.

Start: October 2019

Effects of Physical Training on Health Markers of Post-bariatric Patients

The purpose of this clinical trial is to study the effects of concurrent training program on physical-functional fitness, physical activity level, endothelial function, blood pressure, biochemical markers of cardiovascular risk and bone metabolism, density and microstructure and quality of life of post-bariatric patients (Study 1). To compare the bone and muscle changes in post-bariatric patients by Roux-en-Y Gastric Bypass Surgery with non-bariatric controls, as well as to correlate these health indicators with surgery time and weight loss (Study 2).

Start: January 2020

Predictive Factors of Regain in Bariatric Patients Without Outpatients Care Regular.

The bariatric surgery is recommended for treatment of patients with severe obesity, resulting in greater weight loss and improvement of cardiovascular and metabolic comorbidities. However, weight regain is observed in patients after surgery, leading to health adverse outcomes. The purpose of this study is to identify the rate of weight regain and predictive factors of regain in bariatric patients without outpatients care regular.

Start: November 2018

Comparative Evaluation of the Evolution of Arterial and Microcirculatory Endothelial Function in Obese Patients With Type-2 Diabetes Versus Non-diabetic Obese Patients After a First Bariatric Surgery

The weight reduction obtained after a first bariatric surgery would improve the vascular (correction of endothelial dysfunction, improvement of arterial wall compliance and evolution of the atherothrombotic process) and microcirculatory function in obese patients with type-2 diabetes.

Start: October 2019

Sleeve Gastrectomy and Roux-en-Y Gastric Bypass in the Treatment of Type 2 Diabetes Mellitus.

Obesity is a growing epidemic throughout the world and is followed by increasing incidence of type 2 diabetes that accounts for 90-95% of all cases of diabetes. Weight loss is a major objective, although difficult to achieve with medical treatments. Many recent studies demonstrated that bariatric surgery has the potency to achieve marked and sustained weight loss, and is also associated with a significant improvement in control of type 2 diabetes. The principal aim of this study is to compare two types of bariatric procedures, the Roux-en-Y gastric bypass (RYGBP) and sleeve gastrectomy (SG). The study hypothesis is that these procedures have equal efficacy with regard to resolution of type 2 diabetes.

Start: September 2012

Sexual Health of Obese Men Before and After Bariatric Surgery.

Compare Male Health Sexual Questionnaire (MHSQ) before and after bariatric surgery to assess the sexual health of the obese men with a recommended and exhaustive tool. There are few data that evaluate the sexual health of this population.

Start: July 2018

Prospective Clinical Study of PCV and PCV-VG in Patients Undergoing Bariatric Surgery

This study compares the two mechanical ventilation strategies in obese patients undergoing bariatric surgery: pressure-controlled ventilation(PCV) and pressure-controlled ventilation volume-guaranteed?PCV-VG). This is a randomized controlled trial with a sample size of 100 patients whose body mass index(BMI) is over 30kg/m².

Start: January 2017

Registry on Obesity Surgery in Adolescents

While bariatric surgery is established as a safe and effective alternative with well-defined risks for severely obese adults, little has been published on its use in children. There are many unresolved questions concerning the long-term metabolic and psychological consequences of bariatric surgery in adolescents, and the difference with the adult population. The appropriate timing for bariatric surgery in young people, and the predictors of success and safety still need to be determined. The aim of this long-term prospective study is therefore to establish the safety and efficacy profile of surgical procedures and to clarify whether reductions in morbidity and mortality outweigh the risks of serious surgical complications and lifelong nutritional deficiencies.

Start: September 2019

Robotic Versus Laparoscopic Techniques for Revisional Bariatric Surgery

Obesity has become a significant health problem in Canada. When conservative efforts to lose weight fail, bariatric surgical procedures are often considered. Today, the most common bariatric procedures in North America are Laparoscopic Roux-en-Y gastric bypass (LRYGB) and Laparoscopic Sleeve Gastrectomy (LSG). For many reasons, an initial bariatric procedure may require surgical revision. Some reasons include weight regain, failed weight loss or other acute and chronic complications not related to weight loss. In these cases, it may be indicated that a procedure be reversed inor converted to another type of bariatric procedure. Regardless of the planned intervention, revisional surgery is always more difficult than the initial procedure mainly due to surgical scarring and altered anatomy. Though revisional bariatric surgery has been shown to be safe, our hope is to improve the safety profile by utilizing robotic surgery. Robotic surgery can facilitate more complex procedures by providing superior imaging and freedom of movement during the procedure. The aim of our study is to evaluate prospectively the outcomes of robotic compared to laparoscopic revisional bariatric surgery in terms of perioperative outcomes such as complication rates, operative time and readmissions as well as weight loss/comorbidity resolution (diabetes, hypertension, sleep apnea) where applicable.

Start: January 2019

Study of Bariatric Surgery

The aim of this cohort study is to collect prospectively clinical data on all the patients admitted in the investigators department for bariatric surgery or for any complication of a bariatric procedure. The investigators goal is not only to improve the follow-up but also to assess and publish the investigators results regarding weight loss and the complication rate.

Start: November 2007