Evaluation of Weight Loss Indicators and Laparoscopic One-Anastomosis Gastric Bypass Outcomes

Abstract

Mini-gastric bypass/One-anastomosis gastric bypass (MGB-OAGB) is an effective bariatric technique for treating overweight and obesity, controlling and improving excess-weight-related comorbidities. Our study evaluated OAGB characteristics and resulting weight evolution, plus surgical success criteria based on various excess weight loss indicators. A prospective observational study of 100 patients undergoing OAGB performed by the same surgical team (two-year follow-up). Surgical characteristics were: surgery duration, associated complications, bowel loop length, hospital stay, and weight loss at 6 postoperative points. 100 patients were treated (71 women, 29 men); mean initial age was 42.61 years and mean BMI, 42.61 ± 6.66 kg/m2. Mean surgery duration was 97.84 ± 12.54 minutes; biliopancreatic loop length was 274.95 ± 23.69 cm. Average hospital stay was 24 hours in 98% of patients; no surgical complications arose. Weight decreased significantly during follow-up (P < 0.001). Greatest weight loss was observed at 12 months postsurgery (68.56 ± 13.10 kg). Relative weight loss showed significant positive correlation, with greatest weight loss at 12 months and %excess BMI loss > 50% achieved from the 3-month follow-up in 92.46% of patients. OAGB seems to be effective in treating obesity, with short hospital stays. Relative weight loss correlates optimally with absolute outcomes, but both measures should be used to evaluate surgical results.

Changes in Lipid Profile, Body Weight Variables and Cardiovascular Risk in Obese Patients Undergoing One-Anastomosis Gastric Bypass

“…Weight loss after OAGB was substantial, demonstrating the impact of weight loss in the modification of the lipid profile on the study cohort previously published by the same surgical team [22].…”

Mini-gastric Bypass Complications and the Value of the Preoperative Neutrophil to Lymphocyte Ratio in Early Prediction of Complications

“…MGB is a safe and alternative procedure for LRYGB that has been demonstrated to be effective in weight loss and in resolving metabolic complications. 2,4,6,9,10 The purpose of MGB is to enable a longer feeling offullness" after eating, both by reducing the stomach volume and by ensuring that foods are transferred to the terminal ileum faster with the modulation of intestinal hormones. Its advantages over LRYGB are that it is a single anastomosis and a relatively simpler procedure.…”

“…3 According to WHO data, in 2014, 39% of adults were overweight, and 13% were morbid obesity. 4 Obesity increases the risk of many systemic diseases and mortality. 5 Due to failures in conservative treatment, surgery is becoming increasingly popular for the treatment of morbid obesity.…”

Assessment of body composition in obese patients undergoing one anastomosis gastric bypass: cross-sectional study

“…One Anastomosis Gastric Bypass (OAGB), is one of the bariatric surgeries of malabortive type accepted by IFSO with effective long-term results in weight loss and associated comorbidities 7 . The results in weight reduction can be interpreted in absolute terms as weight and Body Mass Index (BMI) 8 . Other internationally accepted relative terms to describe success in weight loss after surgery are the percentage of Excess of BMI Lost (%EBMIL), which defines the success of a surgery in values greater than 50% 8 , 9 .…”

“…The results in weight reduction can be interpreted in absolute terms as weight and Body Mass Index (BMI) 8 . Other internationally accepted relative terms to describe success in weight loss after surgery are the percentage of Excess of BMI Lost (%EBMIL), which defines the success of a surgery in values greater than 50% 8 , 9 .…”