Remission of comorbidities, weight loss, and adverse events after sleeve gastrectomy and Roux-en-Y Gastric Bypass in patients with obesity

Background: Despite the extensive literature on the outcome and impact of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) on comorbidities and weight loss, clear evidence is still lacking. Our study aims to compare the short- and long-term efficacy and safety of the two procedures in patients with obesity. Methods: The primary endpoint of this retrospective registry study is to examine the adverse events after surgery, weight loss, and remission rate of comorbidities 12 months after surgery. Any result with a p-value of ≤ 5% corresponds to a significant outcome. Results: 27,882 patients had completed a one-year follow-up. 14,399 patients after SG and 13,483 after RYGB. The overall rate of intraoperative and postoperative complications was not significantly different between the two groups (overall p>5%). The %EWL was 62.4% in the SG group vs. 69.2% in the RYGB group; p<0.001. BMI reduction and mean weight loss were significantly different between the two groups in favor of SG. The RYGB group achieved significantly better remission of diabetes mellitus (T2DM; p<0.001), hypertension (28.8% vs. 23.5%; p < 0.001) and reflux 22.3% vs. 7.8%; p<0.001). Sleep apnea remission was similar between the two groups (10.2%; p<0.001). Conclusion: SG and RYGB are effective methods in the treatment of obesity. RYGB achieved better results in terms of remission of comorbidities and %EWL. However, further studies are needed to investigate the sustainability of weight loss and remission of comorbidities after both procedures.

Remission of comorbidities, weight loss, and adverse events after Sleeve Gastrectomy and Roux-en-Y gastric bypass in patients with obesity

Background: Despite the extensive literature on the outcome and impact of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) on comorbidities and weight loss, clear evidence is still lacking. Our study aims to compare the short- and long-term efficacy and safety of the two procedures in patients with obesity. Methods: The primary endpoint of this retrospective registry study is to examine the adverse events after surgery, weight loss, and remission rate of comorbidities 12 months after surgery. Any result with a p-value of 5% corresponds to a significant outcome. Results: 27,882 patients had completed a one-year follow-up. 14,399 patients after SG and 13,483 after RYGB. The overall rate of intraoperative and postoperative complications was not significantly different between the two groups (overall p>5%). The %EWL was 62.4% in the SG group vs. 69.2% in the RYGB group; p<0.001. BMI reduction and mean weight loss were significantly different between the two groups in favor of SG. The RYGB group achieved significantly better remission of diabetes mellitus (T2DM; p<0.001), hypertension (28.8% vs. 23.5%; p < 0.001) and reflux 22.3% vs. 7.8%; p<0.001). Sleep apnea remission was similar between the two groups (10.2%; p<0.001). Conclusion: SG and RYGB are effective methods in the treatment of obesity. RYGB achieved better results in terms of remission of comorbidities and %EWL. However, further studies are needed to investigate the sustainability of weight loss and remission of comorbidities after both procedures.

Effects of sleeve gastrectomy versus omega-loop gastric bypass. What is best for weight loss, perioperative adverse events, and comorbidities?

Aim of the study: This study investigated whether Sleeve Gastrectomy (SG) or Omega-Loop-Gastric-Bypass (OAGB) has the best benefit in weight loss, perioperative risk, and remission of comorbidities. Methods: 29,407 patients after SG and OAGB were included in the German Bariatric Surgery Registry (GBSR). Outcome criteria were perioperative morbidity, perioperative complications, and remission of comorbidities after one year of follow-up. Results: 15,169 patients had completed 1-year follow-up (770 patients after OAGB and 14,399 after SG). The %EWL was higher for OAGB than for SG (70.4 ± 18.5 for OAGB and 62.4 ± 22.6 for SG; p<0.001). BMI reduction was also a significant difference in favor of OAGB (17.5 ± 5.6 kg/m2 for OAGB vs. 15.5 ± 5.9 for SG; p<0.001). There was no significant difference between the two groups in perioperative complications (p<5%). Significant differences in favor of OAGB were found in remission of hypertension (p<0.001), IDDM (p<0.001), NIDDM (p<0.001), reflux (p<0.001), and sleep apnea (p<0.001). Conclusion: Our analysis showed that OAGB surgery was associated with more significant BMI reduction and weight loss one year after surgery. In addition, OAGB surgery was significantly more effective in improving obesity-related comorbidities. Our results support the performance of OAGB over SG in patients with obesity and comorbidities. However, the contraindications and general condition of the patient should be considered in the context of this.

The Importance of Intestinal Length in Triglyceride Metabolism and in Predicting the Outcomes of Comorbidities in Laparoscopic Roux-en-Y Gastric Bypass—a Narrative Review

In this narrative review, we will appraise if modification of the length of bypassed small intestine based on measured total small intestinal length could optimize the outcomes of the laparoscopic Roux-en-Y gastric bypass (LRYGB). We provide a summary of carefully selected studies to serve as examples and to draw tentative conclusions of the effects of LRYGB on remission of comorbidities. As the heterogeneity of the included studies varied in terms of outcomes, type of study, length of the bypassed small intestine, and the follow-up, a common endpoint could not be defined for this narrative article. To achieve efficient metabolic outcomes, it is important to carefully choose the small intestine length excluded from the food passage suited best to each individual patient. Graphical abstract

Bariatric Surgery–How Much Malabsorption Do We Need?—A Review of Various Limb Lengths in Different Gastric Bypass Procedures

The number of obese individuals worldwide continues to increase every year, thus, the number of bariatric/metabolic operations performed is on a constant rise as well. Beside exclusively restrictive procedures, most of the bariatric operations have a more or less malabsorptive component. Several different bypass procedures exist alongside each other today and each type of bypass is performed using a distinct technique. Furthermore, the length of the bypassed intestine may differ as well. One might add that the operations are performed differently in different parts of the world and have been changing and evolving over time. This review evaluates the most frequently performed bariatric bypass procedures (and their variations) worldwide: Roux-en-Y Gastric Bypass, One-Anastomosis Gastric Bypass, Single-Anastomosis Duodeno-Ileal Bypass + Sleeve Gastrectomy, Biliopancreatic Diversion + Duodenal Switch and operations due to weight regain. The evaluation of the procedures and different limb lengths focusses on weight loss, remission of comorbidities and the risk of malnutrition and deficiencies. This narrative review does not aim at synthesizing quantitative data. Rather, it provides a summary of carefully selected, high-quality studies to serve as examples and to draw tentative conclusions on the effects of the bypass procedures mentioned above. In conclusion, it is important to carefully choose the procedure and small bowel length excluded from the food passage suited best to each individual patient. A balance has to be achieved between sufficient weight loss and remission of comorbidities, as well as a low risk of deficiencies and malnutrition. In any case, at least 300 cm of small bowel should always remain in the food stream to prevent the development of deficiencies and malnutrition.

Long-Term Weight Loss Results, Remission of Comorbidities and Nutritional Deficiencies of Sleeve Gastrectomy (SG), Roux-En-Y Gastric Bypass (RYGB) and One-Anastomosis Gastric Bypass (OAGB) on Type 2 Diabetic (T2D) Patients

This study aimed to compare the long-term weight loss results, remission of comorbidities and nutritional deficiencies of sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB) and One-Anastomosis gastric bypass (OAGB) on type 2 diabetic (T2D) patients. Patients and Methods: A retrospective analysis of all the morbidly obese and diabetic patients undergoing SG, RYGB, and OAGB as primary bariatric procedures between February 2010 and June 2015 was performed. Anthropometric parameters, remission of comorbidities, nutritional deficiencies and supplementation requirements at 1, 2 and 5 years’ follow-up were monitored. Patients lost to follow-up 5 years after surgery were excluded from the analysis. Results: 358 patients were included. The follow-up rate was 84.8%. Finally, 83 SG, 152 RYGB, and 123 OAGB patients were included in the analysis. OAGB obtained significantly greater weight loss and remission of dyslipidemia than the other techniques. There was a trend towards greater T2D and hypertension remission rate after OAGB, while fasting glucose and glycated hemoglobin levels were significantly lower after OAGB. There were no significant differences in hemoglobin or protein levels between groups. SG obtained lower iron deficiencies than the other techniques, while there were no significant differences in other nutritional deficiencies between groups. Conclusion: OAGB obtained greater weight loss and remission of dyslipidemia than RYGB or SG. Excluding lower iron deficiency rates after SG, there were no significant differences in the development of nutritional deficiencies between groups.

Bariatric Surgery: Remission of Inflammation, Cardiometabolic Benefits, and Common Adverse Effects

Obesity is associated with increased mortality as a result of several comorbidities which occur in tandem with the obese state. Chronic inflammation is well documented in obesity, and evidence from numerous studies support the notion that the increased inflammation in individuals with obesity accentuates the comorbidities seen in this condition. The remission of comorbidities such as metabolic, cardiovascular, and neurological complications occurs following bariatric procedures. Bariatric surgery significantly reduces mortality and results in remarkable weight loss and reversal in several obesity-related comorbidities. There is indisputable evidence that the resolution of inflammation that occurs after bariatric surgery mitigates some of these comorbidities. With the increasing use of bariatric surgery for the treatment of severe obesity, it is pivotal to elucidate the underlying mechanisms responsible for the notable improvements seen after the procedure. This review summarizes underlying mechanisms responsible for the remission of obesity-related abnormalities and discusses the common adverse effects of bariatric surgery. Well-stratified, large-scale studies are still needed for a proper evaluation of these underlying mechanisms.

Bariatric surgery as a safe and effective intervention for the control of comorbidities in older adults

INTRODUCTION: In addition to being associated with worsening of diseases related to metabolic syndrome and musculoskeletal disorders, obesity in older adults increases the risk of falls, frailty syndrome, depression, and dementia, with consequent functional loss. Among all treatments available, bariatric surgery is an option for eligible patients. OBJECTIVES: To discuss aspects related to the safety and benefits of bariatric surgery for the control or remission of comorbidities in older adults. METHODS: This literature review was carried out in databases, using the following keywords: bariatric surgery and elderly or aged or older adult and comorbidities or safety. We included clinical trials, observational studies, comparative studies, and reviews that evaluated the effect of bariatric surgery on the control or remission of comorbidities in older adults. RESULTS: In recent years, several studies have evidenced not only control or remission of comorbidities, such as diabetes, hypertension, and sleep apnea syndrome, but also a low rate of complications, similar to those observed in young people. CONCLUSIONS: Based on the results of these studies, bariatric surgical procedures can be indicated for eligible older adults, without age restriction, taking into account functional and life expectancy aspects.