Active clinical trials for "Obesity, Morbid"

Randomized clinical trial of two preoperative diets before bariatric surgery (gastric bypass)comparing standard diet and Prodimed (VLCD) in 100 morbidly obese patients selected for a gastric bypass procedure

the purpose of this study is to determine if 60 meter test done prior to surgery is a predictive in terms of extubation in morbid obese patients undergoing morbid obese surgery.

Exercise training is proved to protect against premature cardiovascular mortality. Additionally there is evidence that relatively high exercise intensity may be an important factor for improving aerobic capacity and endothelial function in patients with post-infarction heart failure, metabolic syndrome, coronary artery disease, as well as in overweight and obese individuals. The aims of this study is to investigate if High-intensity exercise before a gastric bypass operation will decrease hospitalization days and complications after the gastric bypass.

Bariatric surgery is the only satisfactory treatment for loss and weight maintenance in obese patients. This loss is a result of several factors that go beyond the simple anatomical abnormality of the gastrointestinal tract and may be the product of post-op energy expenditure changes. The respiratory quotient (RQ) and diet-induced thermogenesis (DIT) are important components of energy expenditure and possible changes in them can perform an important role in weight loss after Roux-en-Y Gastric Bypass (RYGB). Previously, we conducted a cross-sectional study where we measured the RQ and DIT in pre and post-op RYGB patients, which was published in the Surgery of Obesity and Related Diseases (SOARD) journal. The objective of this study is to perform a prospective analysis of these same variables (RQ and DIT), evaluating them in the same patients, when pre and postoperatively.

The purpose of this study is to compare postoperative complications between hand sewn and stapled anastomosis after performing Roux en Y-Gastric Bypass as a treatment for morbid obesity.

Coronary arterial disease is a risk factor for bariatric surgery and might be a predictor for later major adverse coronary events. Diagnosis of coronary arterial disease would thus be desirable for obese patients, however percutaneous angiography is an invasive procedure and associated with a certain morbidity in obese patients. In this study the investigators would like to assess whether dual source CT angiography can be used for diagnosis of coronary arterial disease in severely obese patients and which settings yield the best image quality.

The study must be performed in 100 patients suffering from morbid obesity, the procedure will be performed under general anesthesia doing two or three layers of suture to achieves gastric imbrication until transform the stomach to a sleeve. The patients will be followed during the time for 6 month, 1 year, two years and 5 years.

This is a randomized controlled study in which morbidly obese patients undergoing bariatric surgery will be recruited in the preoperative clinic. Patients will be randomized into 2 groups to receive oxygen with Boussignac TM continuous positive airway pressure (CPAP) or conventional Venturi mask postoperatively immediately after extubation. The objective of the study is to examine if Boussignac TM CPAP results in improved oxygenation versus Venturi face mask when it is applied immediately after extubation in morbidly obese patients post bariatric surgery.

Preliminary studies have shown that flaxseed powder, rich in the omega-3 alpha-linolenic acid,is beneficial for the general inflammation present in morbidly obese subjects by decreasing elevated serum markers.As omega-3 fatty acids display additional properties including possible amelioration of atherosclerosis,a 3-month supplementation protocol was devised.Arterial stiffness and intima thickness will be measured in severely obese subjects, in order to document possible reduction of these variables as well.

The aim of this study is to perform a randomized non-blinded clinical trial to assess influence of preoperative carbohydrates loading in patients undergoing bariatric surgery measured by changes in the course of the postoperative period, changes in body composition and changes in insulin resistance