View clinical trials related to Obesity, Morbid.
Filter by:Nonalcoholic Liver disease (NAFLD) is known to be caused by deposition of fat in the liver. The impact of NAFLD on bariatric surgery is of great concern. Enlarged fatty livers increase the operative complications of bariatric surgery and weight loss prior to bariatric surgery has been shown to reduce complications of surgery. Most bariatric surgery programs use a conventional low fat, calorie restricted diet during the preparation phase for surgery. The investigators will compare the effects of the low carbohydrate versus the low fat diets on weight loss, reduction in liver fat content, and liver size. These results will provide new clinical insights into the optimal dietary intervention to make bariatric surgery safe and effective for the increasing numbers of patients opting for this aggressive therapy for morbid obesity. Patients approved for bariatric surgery by the University of Michigan Bariatric Surgery multidisciplinary committee will be randomly assigned to either a 1000 to 1200 calorie low fat or low carbohydrate, 8-week study diet. All the food for this study will be provided for free by the study team. Participants will be required to meet with the study team weekly to pick up study food and for a nutritional consult. These visits will occur in the eight weeks preceding the patient's bariatric surgery procedure. During the bariatric surgery, a liver biopsy will be performed to assess the impact of the study diet on liver fat content.
The prevalence of severely obese children is on the rise. Behavioral therapies for weight loss are successful in some, but others need more aggressive approaches such as drug therapy. In addition, up to 25% of severely obese children have impaired glucose tolerance (IGT), which places them at significantly elevated risk of developing type 2 diabetes mellitus and cardiovascular disease. Although various drug therapies for weight loss and IGT have been explored in adults, few have been evaluated in children. Recently, a new drug class has emerged that targets deficiencies of GLP-1. One of the main glycemic mechanisms of action of the GLP-1 agonists such as exenatide is to enhance glucose disposal in the postprandial setting and improve glucose tolerance. In addition, exenatide can induce weight loss by decreasing appetite and slowing gastric motility.
The purpose of this research study is to evaluate the drug gabapentin (Neurontin®) for its ability to reduce postoperative pain, the need for morphine-like pain medication, and the severity and frequency of postoperative nausea and vomiting in laparoscopic gastric bypass surgery patients.
A collaborative research project with Dr. Kathleen Keef (Department of Physiology, University of Nevada School of Medicine, Reno, Nevada) studying the role of putative neurotransmitters in human intestine.
The study aims to investigate the long term results of a randomized clinical single-centre trial comparing two standard operative techniques in bariatric surgery; laparoscopic adjustable gastric banding and vertical banded gastroplasty.
The purpose of this study is to look at certain areas of the brain that are related to addictive behaviors, such as overeating. These areas are called 'dopamine type 2 receptors' (DRD2) and other studies have shown that obese people have less of these. We propose that low DRD2 availability seen in morbidly obese subjects will change with weight loss associated with bariatric surgery.
This study compares if there is any difference doing antrectomy while performing a sleeve gastrectomy for treating morbid obesity. The investigators compare the differences between leaving or not leaving the antrum in terms of food tolerance, weight lost and quality of life.
Bariatric surgery in the treatment of morbid obesity is associated with long-term weight-loss and decreased overall mortality. Long-term results have been reported for laparoscopic gastric bypass procedures but the long-term results of laparoscopic sleeve gastrectomy are yet unavailable. As sleeve gastrectomy is a rapid and less traumatic procedure with good short-term results of weight loss and resolution of comorbidities, the investigators initiated a prospective randomized two-center study comparing laparoscopic sleeve gastrectomy (LSG)with laparoscopic gastric bypass (LGB) in the treatment of morbid obesity. Study hypothesis: As sleeve gastrectomy is less traumatic, easier and faster to perform compared with gastric bypass,LSG could become the procedure of choice to treat morbid obesity if the long-term results of weight loss and resolution of comorbidities are comparable with laparoscopic gastric bypass.
This study has two phases: 1. In phase 1 of the study (8 weeks),the effect of two different low calorie diets on manifestations of PCOS, including risk factors for the metabolic syndrome and cardiovascular risk profile will be compared. 2. In phase 2 the long term effect (next 44 weeks) on sustained weight-loss and the above mentioned parameters will be compared and evaluated.
Very little information is available about extremely obese (body mass index [BMI] > 40 kg/m2) adolescents. The purpose of the Follow up of Adolescent Bariatric Surgery (FABS) study is to collect information obtained during the clinical care of obese adolescents from all over the country that can be used by researchers to study obesity, the complications of obesity, and the outcomes of obesity treatment during adolescence. This information will be used to describe the experience of the obese adolescent, including how obesity during adolescence and its treatment impacts health and well-being. The information may also be used to study causes of obesity, to determine the predictors of successful obesity treatment and for other obesity related research. Because of the importance of understanding the outcome of obesity and obesity treatments (surgical and non-surgical) on the patient over time, the data included in the study will be collected before, during and after any treatments rendered. For those who do not undergo a treatment which results in major weight change, it will be critical to determine the natural history of adolescent severe obesity as the adolescent transitions into adulthood. Finally, another important purpose of the FABS research study is to obtain patients' consent to be contacted for possible participation in future research studies. SPECIFIC AIMS: 1. To describe the natural history of morbid obesity among adolescents who seek treatment for their obesity 2. To describe major outcomes following bariatric surgery in adolescents evaluated at 3, 6, 12, and annually for 10 years post-operatively and compare these to outcomes to patients managed non-surgically 3. To organize a national cohort of severely obese adolescents who agree to be contacted in the future for research studies