Laparoscopic mini-gastric bypass in patients age 60 and older

ASMBS statement on metabolic and bariatric surgery for beneficiaries of Centers for Medicare and Medicaid Services with a review of the literature

This position statement is issued by the American Society for Metabolic and Bariatric. Surgery in response to inquiries made to the Society by patients, physicians, Society members, hospitals, health insurance payors, the media, and others regarding the access and outcomes of metabolic and bariatric surgery for beneficiaries of Centers for Medicare and Medicaid Services. This position statement is based on current clinical knowledge, expert opinion, and published peer-reviewed scientific evidence available at this time. The statement is not intended to be and should not be construed as stating or establishing a local, regional, or national standard of care. This statement will be revised in the future as additional evidence becomes available.

One Anastomosis Gastric Bypass Compared with Sleeve Gastrectomy in Elderly Patients: Safety and Long-term Outcomes

BACKGROUND

As life expectancy increases, more elderly patients are being considered for metabolic bariatric surgery. We aimed to assess the safety and long-term effectiveness of one anastomosis gastric bypass (OAGB) compared to sleeve gastrectomy (SG).

METHODS

Single-center retrospective comparative study of OAGB and SG (2012-2019) in patients aged ≥ 65 years.

RESULTS

In all, 124 patients underwent OAGB (n = 41) and SG (n = 83). Mean age was 67.6 ± 2.8 and 67.6 ± 2.6 years (p = 0.89), respectively. Baseline characteristics were comparable, except lower rates of hypertension (HTN) and non-alcoholic fatty liver disease in OAGB than SG patients (43.9% vs. 74.6%; p < 0.001, and 39.0% vs. 89.1%; p < 0.001, respectively). Body mass index (BMI) of OAGB and SG patients decreased from 41.8 ± 7.8 and 43.3 ± 5.9 kg/m² (p = 0.25) to 28.6 ± 4.7 and 33.2 ± 5.3 (p < 0.001), at long-term follow-up, respectively. Excess weight loss (EWL) > 50% was achieved in 80.6% and 43.2% of OAGB and SG patients, with a mean EWL of 67.2% ± 22.3 and 45.8% ± 18.0 (p < 0.001) and a mean total weight loss (TWL) of 30.7% ± 10.4 and 21.9% ± 8.1 (p < 0.001), respectively. Resolution rates of obesity-associated medical problems were similar, except type 2 diabetes (T2D) and HTN, which were 86.6% and 73.3% in OAGB, compared with 29.7% and 36.3% in SG patients (p < 0.001 and p = 0.001), respectively. Major early complication rates were comparable (2.4% vs. 3.6%; p = 0.73, respectively). Revision for late complications was required in two OAGB patients.

CONCLUSIONS

OAGB in the elderly is safe and results in better long-term weight reduction and resolution of T2D and HTN than SG.

Safety and Efficacy of One Anastomosis Gastric Bypass on Patients with Severe Obesity Aged 65 Years and Above

PURPOSE

With the global increase in life expectancy and the subsequent impaired quality of life in older obese adults, modalities such as bariatric surgery become crucial to help lose excess weight. This study was conducted to evaluate the effectiveness and safety of one anastomosis gastric bypass (OAGB) in patients 65 years old and above.

MATERIALS AND METHODS

This retrospective cohort study was conducted on 61 patients with severe obesity aged ≥ 65 years through Iran National Obesity Surgery Database. The patients had undergone OAGB and were followed up for 12 to 60 months. The required data was extracted through national database.

RESULTS

Mean age and BMI of the patients were 67.62 ± 2.03 years and 46.42 ± 5.46 kg/m², respectively. Regarding gender, 90.1% of the participants were female. Mean operative time and length of hospital stay were 41.37 ± 13.91 min and 1.16 ± 0.61 days, respectively. Five patients (8.19%) required ICU admission. The changes in %TWL after 3, 6, 12, 24, 36, 48, and 60 month follow-up was 18.62%, 25.51%, 32.84%, 35.86%, 38.49%, 31.41%, and 29.52%, respectively. The resolution of gastroesophageal reflux disease, diabetes mellitus, dyslipidemia, obstructive sleep apnea, and hypertension after 24 month was about 100%, 65%, 73.33%, 100%, and 76%, respectively. The postoperative early and late complications were 6.53% and 11.46%, respectively. We did not find significant difference in above results between two age groups of 65-70 and > 70 years.

CONCLUSIONS

OAGB can be a good choice in older obese adults because of its shorter operative time, higher potency, and low complication rate.

IFSO Update Position Statement on One Anastomosis Gastric Bypass (OAGB)

The International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) issued a position statement on the role of one anastomosis gastric bypass (OAGB) in the field of bariatric/metabolic surgery in 2018 De Luca et al. (Obes Surg. 28(5):1188-206, 2018). This position statement was issued by the IFSO OAGB task force and approved by the IFSO Scientific Committee and IFSO Executive Board. In 2018, the OAGB task force recognized the necessity to update the position statement in the following 2 years since additional high-quality data could emerge. The updated IFSO position statement on OAGB was issued also in response to inquiries to the IFSO by society members, universities, hospitals, physicians, insurances, patients, policy makers, and media. The IFSO position statement on OAGB has been reviewed within 2 years according to the availability of additional scientific evidence. The recommendation of the statement is derived from peer-reviewed scientific literature and available knowledge. The IFSO update position statement on OAGB will again be reviewed in 2 years provided additional high-quality studies emerge.

Weight Loss After One Anastomosis Gastric Bypass-Mini Gastric Bypass (OAGB-MGB): Patient-Related Perioperative Predictive Factors

AIM

The aim of this study was to find independent perioperative factors predicting unsuccessful weight loss following one anastomosis gastric bypass-mini gastric bypass (OAGB-MGB), a recently developed technique of bariatric surgery.

METHODS

Using regression analysis, this prospective cohort study assessed the role of demographic and socioeconomic factors, clinical features, body composition, length of biliopancreatic limb (LBL), nutritional habits, comorbidities, and early post-operative weight reduction values, in predicting 1-year weight loss after OAGB-MGB. All patients at the center who underwent laparoscopic OAGB-MGB between October 2010 and May 2017 were included. The dependent variable was the percent of excess weight loss (%EWL) after 12-month follow-up. Weight loss outcome was defined as successful EWL (≥ 50%) or unsuccessful EWL (< 50%).

RESULTS

Follow-up data at 1 year was available for 1309 (77%) patients. Mean EWL and BMI reduction were 81.63% and 16.82 ± 4.37 kg/m² at 1 year. In addition, 48 (3.7%) patients had unsuccessful weight loss. Pre-operative higher BMI (OR, 1.34; p = 0.001), type 2 diabetes (OR, 4.26; p = 0.039), pre-surgery volume eating habit (OR, 0.12; p = 0.003), weight reduction value in the first month after surgery (OR, 0.80; p = 0.002), and length of biliopancreatic limb (LBL) (OR, 1.05; p = 0.017) were independently associated with unsuccessful weight loss at 1-year follow-up.

CONCLUSIONS

OAGB-MGB provides considerable weight loss for most patients. Initial lower BMI, absence of diabetes, being volume eater, and higher first month weight loss are independently associated with successful weight loss after 1 year.

LSG vs MGB-OAGB: 5-Year Follow-up Data and Comparative Outcome of the Two Procedures over Long Term-Results of a Randomised Control Trial

BACKGROUND

Bariatric surgery is a durable and effective way for the management of obesity and resolution of related comorbidities. The aim of this study is to evaluate the outcome of laparoscopic sleeve gastrectomy (LSG) and one-anastomosis gastric bypass (OAGB) over long term in a South Asian population.

MATERIALS AND METHODS

This is a prospective randomised trial comparing the outcome of 100 and 101 LSG and OAGB patients respectively after 5-year follow-up. This study is in continuity with previous published papers with 1- and 3-year follow-up. 71 LSG and 73 OAGB patients followed at 5 years. The results of these patients were analysed and compared in terms of %EWL, comorbidity resolution and quality of life (QoL) at 5 years. Bariatric analysis reporting and outcome system (BAROS) was used to assess the outcome of patients.

RESULTS

At 5-year follow-up, both LSG and OAGB patients performed well and patients had significant improvement in BMI (kg/m²⁾. The mean preoperative BMI of LSG and OAGB patients was 44.89 ± 7.94 and 45.32 ± 8.24, and their mean BMI at 5 years was 33.41 ± 6.02, 30.80 ± 3.40 respectively. At 5 years, %EWL was 55.95 ± 27.01 and 65.28 ± 13.98 for LSG and OAGB patients respectively. The QoL score of LSG and OAGB patients was 1.86 ± 0.56 and 2.35 ± 0.41 while comorbidity score was 1.84 ± 0.68 and 2.24 ± 0.62 respectively at 5 years.

CONCLUSIONS

Both LSG and OAGB are effective bariatric procedures over long term with respect to weight loss, comorbidity resolution and improvement in QoL. OAGB is significantly better than LSG in all the three parameters at 5 years.

Efficiency and risks of one-anastomosis gastric bypass

The single-anastomosis gastric bypass has been proposed as a simpler and efficient weight loss reducing surgery. Postoperative outcomes are comparable to those of contemporary popular procedures. There are, however, controversies regarding the efficiency and risks of one-anastomosis gastric bypass (OAGB). The purpose of this review is to define the role of OAGB in metabolic surgery via its operative outcomes. A review of English language literature was performed using the PubMed database, basing the search on the following keywords: “one-anastomosis gastric bypass” AND “outcomes”. A total of 238 articles were considered for review. Following thorough screening and selection criteria, 7 articles were considered sufficient for assessment. The nature of the available evidence of this technique poses a challenge to OAGB in its establishment as a standard of care procedure. The anatomical configuration following surgery, as well as the metabolic implications of its hypo-absorptive nature, raises controversial and ongoing concerns that are yet to be addressed. Hence, prospective studies with long-term follow-up (>5 years) can bypass these concerns and allow the progression of the clinical practice of OAGB.

Impact of age on postoperative complications following bariatric surgery

Background: The impact of age on complications following bariatric surgery remains unclear. Research is therefore warranted among previously unstudied populations of bariatric surgery patients. The aim of the current study was to assess the impact of age on postoperative complications following bariatric surgery in Saudi Arabia. Methods: This retrospective study included 301 patients who underwent bariatric surgery between January 2011 and July 2016. Patients were classified into three groups according to age: < 25 years; 25–36 years; and >36 years. Primary outcomes were determined by identifying the number of complications reported during a period of 180 days. The negative binomial model was used to assess the relationship between age and the high rate of postoperative complications following adjustment for confounding variables. Results: The incidence of overall complications was 10.1% in the < 25-year age group, 15% in the 25–36-year age group, and 24.2% in the >36-year age group. After adjusting for confounding variables, it was discovered that the risk of postoperative complications increases with age. The risk was higher in the >36-year age group than in the >25-year age group [adjusted relative rate (aRR) = 2.35; 95% confidence interval (CI) = 1.046–5.290; p = 0.039]. Diabetes (aRR = 3.27), adjustable gastric bands (aRR = 3.40), and a more lengthy hospital stay (aRR = 1.23) were associated with increased rates of postoperative complications. Conclusion: Age is independently associated with a high rate of postoperative complications following bariatric surgery. The results showed that patients with diabetes, those using adjustable gastric bands, and those with longer length of hospital stay had significantly higher incidence of postoperative complications. These findings indicate the need for risk stratification tools to evaluate patients as candidates for bariatric surgery and to use as a guide for identifying optimal preoperative factors.

Mini Gastric Bypass-One Anastomosis Gastric Bypass (MGB-OAGB)-IFSO Position Statement

PREAMBLE

The International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) has played an integral role in educating both the metabolic surgical and the medical community at large about the role of innovative and new surgical and/or endoscopic interventions in treating adiposity-based chronic diseases.The mini gastric bypass is also known as the one anastomosis gastric bypass. The IFSO has agreed that the standard nomenclature should be the mini gastric bypass-one anastomosis gastric bypass (MGB-OAGB). The IFSO commissioned a task force (Appendix 1) to determine if MGB-OAGB is an effective and safe procedure and if it should be considered a surgical option for the treatment of obesity and metabolic diseases.The following position statement is issued by the IFSO MGB-OAGB task force and approved by the IFSO Scientific Committee and Executive Board. This statement is based on current clinical knowledge, expert opinion, and published peer-reviewed scientific evidence. It will be reviewed in 2 years.

Treatment of obesity in older persons-A systematic review

The study aims to systematically review the available evidence regarding weight loss interventions (lifestyle, surgical, and pharmacological) for obesity in adults aged over 60 years. A search of prospective, randomized studies took place in January 2018, on Medline (Web of Science) and PubMed databases. Search terms included the following: elderly, obese, hypocaloric, pharmacotherapy, and bariatric surgery. Abstracts were screened for eligibility. A total of 256 publications regarding lifestyle interventions were identified; of these, 69 studies were eligible. As no eligible studies were identified for pharmacotherapy or bariatric surgery, the search was broadened to include non- randomized studies. Four pharmacotherapy and 66 surgery studies were included. Lifestyle intervention had similar weight loss efficacy in older compared with younger people, with positive effects on a number of relevant outcomes, including physical function and cardiovascular parameters. There was little data regarding obesity pharmacotherapy in older persons. The available data for bariatric surgery indicate comparable weight loss and resolution of type 2 diabetes, with similar or slightly higher complication rates in older compared with younger people. Older age alone should not be considered a contraindication to intensive lifestyle or surgical intervention for obesity. There are insufficient data to guide clinical decisions regarding obesity pharmacotherapy in older people.

American Society for Metabolic and Bariatric Surgery review of the literature on one-anastomosis gastric bypass

The following review is being published by the American Society for Metabolic and Bariatric Surgery in response to numerous inquiries made to the Society by patients, physicians, society members, hospitals, and others regarding one-anastomosis gastric bypass as a primary treatment for obesity or metabolic disease. The review is based on current clinical knowledge, expert opinion, and published peer-reviewed scientific evidence available at this time. The review is not intended as, and should not be construed as, stating or establishing a local, regional, or national standard of care.

Implementation of mini gastric bypass in the Netherlands: early and midterm results from a high-volume unit

BACKGROUND

Mini gastric bypass (MGB) is a promising and attractive alternative bariatric procedure. In 2011, we introduced MGB in our high-volume bariatric unit. Subsequently, we evaluated short- and midterm results of this procedure.

METHODS

A prospective cohort of patients who underwent MGB between 2012 and 2013 was retrospectively evaluated.

RESULTS

From 2012 to 2013, primary MGB was performed in 287 patients with a mean BMI of 42 kg/m² (range 32-76 kg/m²). The mean operation time was 50 min (range 25-120 min). The mortality rate was 0%. Serious complications, such as leakage, pulmonary embolism, or bleeding, occurred in 3.1% of patients; anastomotic leaks occurred in 1.4% of patients. Conversion to Roux-en-Y gastric bypass for biliary reflux or other indications occurred in six patients (2%). During our initial learning phase, biliary reflux rates were higher due to an overly short pouch. Surgical revision for malnutrition was performed in one patient. Percent excess weight loss and percent total body weight loss were 85 and 35%, respectively, after 1 year; 88 and 36.6%, respectively, after 2 years; and 83 and 34.3%, respectively, after 3 years. Follow-up rates after 1, 2, and 3 years were 96% (277/287), 72% (208/287), and 66% (190/287), respectively.

CONCLUSIONS

As a primary bariatric procedure, MGB is associated with good early and midterm results. MGB has the potential to become a significant alternative bariatric procedure. Correct technique is of extreme importance when performing MGB; therefore, the appointment of an experienced MGB surgeon as a guide when beginning to utilize this technique is advised.

Impact of biliopancreatic limb length on severe protein-calorie malnutrition requiring revisional surgery after one anastomosis (mini) gastric bypass

Background:

One anastomosis (mini) gastric bypass (OAGB) is believed to be more malabsorptive than Roux-en-Y gastric bypass. A number of patients undergoing this procedure suffer from severe protein–calorie malnutrition requiring revisional surgery. The purpose of this study was to find the magnitude of severe protein–calorie malnutrition requiring revisional surgery after OAGB and any potential relationship with biliopancreatic limb (BPL) length.

Methods:

A questionnaire-based survey was carried out on the surgeons performing OAGB. Data were further corroborated with the published scientific literature.

Results:

A total of 118 surgeons from thirty countries reported experience with 47,364 OAGB procedures. Overall, 0.37% (138/36,952) of patients needed revisional surgery for malnutrition. The highest percentage of 0.51% (120/23,277) was recorded with formulae using >200 cm of BPL for some patients, and lowest rate of 0% was seen with 150 cm BPL. These data were corroborated by published scientific literature, which has a record of 50 (0.56%) patients needing surgical revision for severe malnutrition after OAGB.

Conclusions:

A very small number of OAGB patients need surgical correction for severe protein–calorie malnutrition. Highest rates of 0.6% were seen in the hands of surgeons using BPL length of >250 cm for some of their patients, and the lowest rate of 0% was seen with BPL of 150 cm. Future studies are needed to examine the efficacy of a standardised BPL length of 150 cm with OAGB.

Postoperative Outcomes of Laparoscopic Bariatric Surgery in Older Obese Patients: a Matched Case-Control Study

BACKGROUND

Laparoscopic bariatric surgery (LBS) in older obese patients remains debated regarding postoperative outcomes.

OBJECTIVES

The aim of this case-control study is to evaluate global results of LBS in patients ≥60 years (yr) with a matched case control study.

METHODS

All patients ≥60 years who benefited from LBS in our center between January 2009 and January 2014 were included in this retrospective study. They were matched (1:2) to patients <40 and 40-59 years on BMI, surgical procedure and year, and history of previous LBS. Postoperative complications in the first 90 days following LBS, micronutrient and mineral deficiencies, and Bariatric Analysis and Reporting Outcome System (BAROS) were analyzed.

RESULTS

Fifty-five patients ≥60 year (40 sleeve gastrectomy, 14 one anastomosis gastric bypass, 1 gastric bypass revision) were matched to patients <40 year and patients 40-59 year (n = 55 each). Patients ≥60 year presented more obesity-related comorbidities at baseline. Except for bleeding complications (P = 0.01), no difference in major complication rate was observed (P = 0.43). At 24 months, %EWL was lower in older patients compared to others (76.3, 82.2 and 89.7, respectively, P = 0.009). Iron and vitamin B12 deficiencies were less prevalent in patients ≥60 year After a mean follow-up of 27 months, BAROS score (filled in by 82% of patients) was lower in patients ≥60 years (P = 0.01).

CONCLUSION

Despite less weight loss, postoperative complications rate, and lower BAROS results, LBS keeps an acceptable benefit-risk balance in selected older patients and should not be rejected on the sole argument of age. Additional studies are needed to assess the long-term benefits of LBS in older patients.

Comparison of mini-gastric bypass with sleeve gastrectomy in a mainly super-obese patient group: first results

INTRODUCTION

Whereas sleeve gastrectomy (SG) in its beginnings was mainly performed to treat super-obesity, it has become as popular as gastric bypass in the treatment of obesity of any class. In contrast to this, the persisting problems of early staple line leaks and poor long-term results of SG regarding weight loss and new onset of gastroesophageal reflux have become increasingly obvious. The mini-gastric bypass (MGB) with its low complication rates and possibly better long-term results may be a good alternative to SG, especially in super-obesity.

METHODS

In this context, two groups of mostly super-obese patients (SG and MGB) of a single bariatric center were retrospectively analyzed and compared for perioperative and early postoperative outcomes.

RESULTS

Between August 2007 and March 2015, 169 patients underwent MGB, while 118 patients were operated by SG. Both groups were comparable for BMI at baseline (MGB = 54.1 kg/m² vs. SG = 54.6 kg/m², p = 0.657). Mean operation time (81.7 vs. 112.1 min, p < 0.0001) as well as hospital stay was lower in the MGB-group (4.5 vs. 7.2 days, p < 0.0001). Perioperative (30 days) mortality was 0 % in MGB versus 0.8 % in SG (one patient). Perioperative complication rate was also lower in the MGB-group (3.0 vs. 9.3 %, p = 0.449). %EWL was significantly better after 1 year in MGB: 66.2 % (±13.9 %) versus 57.3 % (±19.0 %) in SG (p < 0.0001), as well as BMI which was 34.9 kg/m² (±4.8 kg/m²) in MGB versus 38.5 kg/m² (±8.6 kg/m²) in SG (p = 0.001).

CONCLUSIONS

MGB achieved superior weight loss at 1 year and had a lower 30-day complication rate in comparison with SG for super-obese patients. Thus, MGB might be superior to SG regarding the treatment of super-obesity.