View clinical trials related to Bariatric Surgery.
Filter by:Preoperative exercise has been shown to improve physiological and functional capacity in patients undergoing abdominal surgery to prepare them for the stress of surgery. Patients undergoing bariatric surgery are advised to partake in regular preoperative exercise. In the setting of bariatric surgery, as well as preparing patients for the stress of surgery, it is also thought to increase the likelihood that they will exercise postoperatively. However, compliance to this advice is extremely low. Text-message interventions have been shown to improve compliance to other lifestyle interventions. The investigators will compare the rate of compliance to preoperative exercise prior to bariatric surgery in patients who receive a daily text message to those who do not. The investigators will also compare weight loss.
Bariatric surgery has long been recognized as an effective treatment for grade 3 or grade 2 obesity associated with complications. Among the bariatric surgical procedures, roux-en-y gastric bypass (RYGB) was shown to account for 41% of all bariatric operations at least in the United Sates. Sleeve gastrectomy (SG), that was conceived as the first step before performing a RYGB or a biliopancreatic diversion with duodenal switch in patients who were super-obese, has recently emerged as a new restrictive bariatric procedure. Reactive hypoglycemia is a late complication affecting up to 72% of RYGB patients although it seems to occur also after SG, in about 3% of the cases. However, until now no prospective studies have investigated the incidence of hypoglycemia after RYGB nor randomized studies have been undertaken to compare the effect of SG to that of RYGB in terms of incidence of hypoglycemic episodes. The primary aim of the present study is to conduct a 1-year randomized trial to compare the incidence of hypoglycemia after RYGB or SG.
Bariatric surgery provides a strong and long-term effect in reducing weight in obese subjects. Studies showed that obesity and its comorbidities are associated with a lower cognitive performance. The aim of the researchers study is to examine the cognitive performance of the patients before and after bariatric surgery.
With 6.5 million obese recorded in France in 2009, obesity is a major public health: it is a chronic disease associated with many respiratory, cardiac, metabolic, musculoskeletal complications. The risk of mortality and morbidity are directly proportional to the importance of overweight and medical treatment alone is only moderately effective weight loss. Bariatric surgery is the only treatment with proven efficacy in patients with a body mass index above 40 kg/m2. As with any surgery, there is a risk of surgical site infection (SSI). The SSI are the third most common nosocomial infection after urinary tract infections and airway. The fight against the ISO requires the administration of antibiotic prophylaxis acting on the main bacteria found in bariatric surgery. There are several studies in the literature interested in the dose of cefazolin in bariatric surgery. However, no published pharmacokinetic studies defines an optimal dose to obtain tissue and plasmatic concentrations of cefazolin higher than minimum inhibitory concentrations of the main germs encountered in these surgery. Only empirical recommendations are published, including the SFAR and the National Institute of Health in 2010. This study aims to determine whether the dose of 4 grams of cefazolin can achieve these goals of concentration and estimate an injection time of preoperative ideal for an adequate tissue concentration at the time of the incision.
OBJECTIVE: to determine whether preoperative inspiratory muscle training (IMT) is able to attenuate the impact of surgical trauma on the respiratory muscle strength, in the lung volumes and diaphragmatic excursion in obese women undergoing open bariatric surgery. Therefore, the hypothesis of the present study was that preoperative IMT is able to attenuate the negative effects of surgical trauma on the respiratory muscle strength, in the lung volumes and diaphragmatic excursion, thus reducing the risk of PPC, in obese patients undergoing open bariatric surgery. DESIGN: Randomized controlled trial. SETTING: Meridional Hospital, Cariacica/ES, Brazil. SUBJECTS: Thirty-two obese women undergoing elective open bariatric surgery were randomly assigned to receive preoperative inspiratory muscle training (IMT group) or usual care (control group). MAIN MEASURES: Respiratory muscle strength (maximal inspiratory pressure - MIP and maximal expiratory pressure - MEP), lung volumes and diaphragmatic excursion.
The main objective of the study is to evaluate the protein requirement associated with postoperative weight loss caused by by-pass (shunt which leads to a certain degree of malabsorption) or sleeve gastrectomy (more technically conservative with less malabsorption), through the study of nitrogen balance. The benefit of protein supply easily absorbed and with high essential amino acids content (proteins "fast" soluble milk) on protein metabolism and muscle function will also be studied. Endotoxemia and intestinal flora variations were measured before and after bariatric surgery.
More often than not, obesity occurs in tandem with Obstructive Sleep Apnea (OSA), and each disease effectively perpetuates severity of the other. Surgical weight loss (i.e. bariatric surgery), and nocturnal, positive airway pressure therapy (PAP) are used to treat the two conditions separately, and these treatment modalities both present a unique set of challenges in terms of patient-adherence. Furthermore, the combined effects of these therapies on body weight and OSA severity are unclear, and require longitudinal investigation. The purpose of the research proposed herein is twofold: A) To prospectively demonstrate the specific physiologic/psychological improvements in OSA risk factors and disease severity that occur in a subset of bariatric surgery patients with OSA, who are being effectively treated with PAP and furthermore; B) To elucidate differences in postoperative outcomes (weight-loss, dyslipidemia, OSA severity, comorbidity resolution) between patients who are compliant or non-compliant with prescribed PAP therapy. The investigators anticipate that results will be used to develop and streamline approaches to improve pulmonary/sleep-related outcomes in bariatric surgery patients. Furthermore, this line of research has many implications for strategies to strengthen the coordination of care between bariatric surgery, pulmonology, and other clinical sub-specialties that are integral to the postoperative health of these patients.
Obese patients are going to be submitted to indirect calorimetry pre-operatively and we are going to repeat the same exam 6 months after bariatric surgery (post Roux-en-Y gastric Bypass surgery). They are going to do also body composition analysis in both moments. The investigators are going to compare the results to see if the bariatric surgery increases their energy expenditure.
The goal of this observational study is to assess the efficacy of Realize My Success (RMS),a website that allows patients and providers to maintain contact via the website. We will compare RMS users on a number of different variables with the goal of identifying which variables are associated with optimal outcomes (larger weight losses) at one year (and potentially beyond). The study has two primary objectives. The first is to assess changes in body weight at postoperative year 1 in frequent v. infrequent RMS users. We predict that frequent users will achieve significantly greater reductions in weight at 6 and 12 months (and beyond) than infrequent users. The second objective is to assess changes in body weight at postoperative year 1 in persons who use different features of the RMS site. We hypothesize that persons who, on a regular basis, record their food intake, track their physical activity and make specific behavioral goals will experience significantly greater reductions in weight beginning 6 months after surgery as compared to those who do not use these features of the RMS site.
Bariatric (obesity) surgery has become the preferred treatment option for patients with severe obesity and is increasing in popularity. It is commonly performed, with nearly 350 000 operations in the world every year. The most common type of bariatric surgery is gastric bypass, in which stomach size is reduced by 95% and the upper intestine is bypassed. Bypass of the upper intestine may lead to medication malabsorption, although this potential adverse effect has received little study. The objective of this study is to determine whether gastric bypass reduces the absorption of a azithromycin, a medication commonly prescribed first-line for infections, especially pneumonia. Patients and non-surgical controls will receive a single dose of azithromycin under highly standardized study conditions. The absorption of azithromycin will be calculated and compared between surgical and non-surgical study groups. The investigators hypothesis is that there will be a significant reduction in the absorption of azithromycin in gastric bypass patients compared to non-surgical controls. This raises the possibility that post-gastric bypass patients treated with azithromycin may fail to respond to treatment, become worse and even die. This study will have important implications for the large number of past and future gastric bypass recipients.