Conversion of gastric sleeve to Roux-en-Y gastric bypass and biliopancreatic diversion/duodenal switch: safe and viable options

BackgroundSleeve gastrectomy (SG) remains the most performed bariatric surgery. As numbers of SG increase, so do the numbers of patients requiring conversion for insufficient weight loss or weight regain. However, the literature has cited complication rates as high as 30%for reoperative bariatric surgery.ObjectiveWith the recent inclusion of conversion surgery variables in the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database, we compared the safety and efficacy of SG conversion to Roux-en-Y gastric bypass (RYGB) versus biliopancreatic diversion and duodenal switch (BPD/DS).SettingMBSAQIP database.MethodsAnalysis of the 2020 MBSAQIP Participant Use Files revealed 6020 patientswho underwent SG conversion to RYGB (5348) and BPD/DS (672). We examined 30-day outcomes including death, anastomotic leak, readmission, any complication, dehydration, and weight loss.ResultsThere was no statistically significant difference in mortality (.12% versus 0%) or; complication rate (6.5% versus 5.1%) with SG conversion to RYGB or BPD/DS. There was a statistically significant difference in anastomotic leak (.5% versus 1.2%, P = .024).Interestingly, BPD/DS was less likely to require dehydration treatments (4.2% versus 2.2%, P = .009) and had fewer readmissions within 30 days (7.3% versus 5.4%, P = .043).ConclusionsComplication rates after conversion of SG to RYGB or BPD/DS may be significantly lower than previously reported and only slightly higher than after primary weight loss surgery. SG conversion to either RYGB or BPD/DS remain safe, viable options forpatients who had insufficient weight loss or regain, and BPD/DS may be the better option in the appropriate patient.     

Single- or double-anastomosis duodenal switch versus Roux-en-Y gastric bypass as a revisional procedure for sleeve gastrectomy: A systematic review and meta-analysis

BackgroundLaparoscopic sleeve gastrectomy (SG) is one of the most commonly performed bariatric procedure worldwide. There is currently no consensus on which revisional procedure is best after an initial SG.ObjectivesTo compare the efficacy and safety between single-anastomosis duodeno-ileal bypass (SADI) or biliopancreatic diversion with duodenal switch (BPD-DS) versus Roux-en-Y gastric bypass (RYGB) as a revisional procedure for SG.SettingUniversity Hospital, Canada.MethodsMEDLINE, Embase, Cochrane Central Register of Controlled Trials, and PubMed were searched up to August 2018. Studies were eligible for inclusion if they compared SADI or BPD-DS with RYGB as a revisional bariatric procedure for SG. Primary outcome was absolute percentage of total weight loss. Secondary outcomes were length of stay, adverse events, and improvement or resolution of co-morbidities (diabetes, hypertension, or hypercholesterolemia). Pooled mean differences were calculated using random effects meta-analysis.ResultsSix retrospective cohort studies involving 377 patients met the inclusion criteria. The SADI/BPD-DS group achieved a significantly higher percentage of total weight loss compared with RYGB by 10.22% (95% confidence interval, ?17.46 to ?2.97; P = .006). However, there was significant baseline equivalence bias with 4 studies reporting higher initial body mass index (BMI) in the SADI/BPD-DS group. There were no significant differences in length of stay, adverse events, or improvement of co-morbidities between the 2 groups.ConclusionSADI, BPD-DS, and RYGB are safe and efficacious revisional surgeries for SG. Both SADI and RYGB are efficacious in lowering initial BMI but there is more evidence for excellent weight loss outcomes with the conversion to BPD-DS when the starting BMI is high. Further randomized trials are required for definitive conclusions.     

Comparison of weight loss and body composition changes with four surgical procedures

BackgroundA paucity of information is available on the comparative body composition changes after bariatric procedures. The present study reports on the body mass index (BMI) and body composition changes after 4 procedures by a single group.MethodsAt the initial consultation, the weight and body composition of the patients undergoing 4 different bariatric procedures were measured by bioimpedance (Tanita 310). Follow-up examinations were performed at 1 year and at subsequent visits after surgery. Analysis of variance was used to compare the postprocedure BMI and body composition. Analysis of covariance was used to adjust for baseline differences.ResultsA total of 101 gastric bypass (GB) patients were evaluated at 19.1 ± 10.6 months, 49 biliopancreatic diversion with the duodenal switch (BPD/DS) patients at 27.5 ± 16.3 months, 41 adjustable gastric band (AGB) patients at 21.4 ± 9.2 months, and 30 sleeve gastrectomy (SG) patients at 16.7 ± 5.6 months (P <.0001). No differences were found in patient age or gender among the 4 groups. The mean preoperative BMI was significantly different among the 4 groups (P <.0001): 61.4 kg/m², 53.2, 46.7, and 44.3 kg/m² for the SG, BPD/DS, GB, and AGB group, respectively. The postoperative BMI adjusted for baseline differences was 27.8 (difference 23.6 ± 8.3), 32.5 (difference 15.6 ± 5.0), 37.2 (difference 18.2 ± 8.2), and 39.5 kg/m² (difference 7.5 ± 4.3) for the BPD/DS, GB, SG, and AGB groups, respectively (P <.0001). The percentage of excess weight loss was 84%, 70%, 49%, and 38% for the BPD/DS, GB, SG, and AGB groups, respectively (P <.0001). The postoperative percentage of body fat adjusted for baseline differences was 25.7% (23.9% ± 7.0%) 32.7% (16.1% ± 10.5%) 37.7% (16.7% ± 5.6%), and 42% (6.0% ± 6.8%) for the BPD/DS, GB, SG, and AGB groups, respectively (P <.0001). The lean body mass changes were reciprocal.ConclusionAlthough the BPD/DS procedure reduced the BMI the most effectively and promoted fat loss, all the procedures produced weight loss. The AGB procedure resulted in less body fat loss within 21.5 months than SG within 16.7 months. Longer term observation is indicated.     

胆胰分流并十二指肠转位术治疗胃袖状切除术后复胖个案报告并文献复习

目的:探讨胆胰分流并十二指肠转位术作为胃袖状切除术后复胖修正手术的可行性。方法:女性患者,重度肥胖,身体质量指数(BMI)为42.3 kg/m^2,合并2型糖尿病,应用胰岛素治疗血糖控制不佳,糖化血红蛋白(HbA1c)10.5%;首次接受腹腔镜胃袖状切除术,术后1年BMI降至32.4 kg/m^2,HbA1c 8.9%;术后3年,BMI反弹至40.2 kg/m^2,HbA1c为10%。再次接受标准的胆胰分流并十二指肠转位术,即食物肠袢150 cm、共同肠袢100 cm。结果:胆胰分流并十二指肠转位术术后3个月,BMI 39.9 kg/m^2,HbA1c 8.9%,恢复正常进食,排便次数3~4次/d,质软,无特殊不适。结论:胆胰分流并十二指肠转位术作为腹腔镜胃袖状切除术的术后修正手术,对于体重反弹、血糖增高的治疗效果优异,且不影响患者进食习惯,但术后营养并发症较多见,需密切关注。     

Outcome of revisional bariatric surgery for insufficient weight loss after laparoscopic Roux-en-Y gastric bypass: an observational study

BackgroundInsufficient weight loss or secondary weight regain with or without recurrence of comorbidity can occur years after laparoscopic Roux en Y gastric bypass (LRYGB). In selected patients, increasing restriction or adding malabsorption may be a surgical option after conservative measures failed.ObjectivesEvaluation of short and long term results of revisional surgery for insufficient weight loss or weight regain after LRYGB.SettingTertiary hospital.MethodsRetrospective analysis of prospectively collected data from a cohort of 1150 LRYGB patients. Included were patients, who underwent revisional bariatric surgery after LRYGB for insufficient weight loss with a follow-up of minimal 1 year.ResultsFifty-four patients were included in the analysis. After an interdisciplinary evaluation, patients with insufficient weight loss, signs of dumping syndrome, and lacking restriction were offered a nonadjustable band around the pouch (banded group, n = 34) and patients with sufficient restriction, excellent compliance, and adherence were offered a revision to laparoscopic biliopancreatic diversion (BPD group, n = 20). The revisional procedure was performed 3.3 ± 2.3 years after LRYGB in the banded-group and after 6.4 ± 4.3 years in the BPD group (P = .001). Mean body mass index at the time of the primary bariatric procedure was 41.7 ± 6.2 kg/m² in the banded group and 45.2 ± 8.2 kg/m² in the BPD group (P = .08); minimal body mass index between both operations was 29.1 ± 4.7 kg/m² in the banded group and 36.5 ± 9.4 kg/m² in the BPD group, and, at the time of revisional surgery, 31.4 ± 5.5 kg/m² in the banded group and 40.8 ± 6.7 kg/m² in the BPD group (P = .0001). The mean body mass index difference 1 year after revisional surgery was 1.3 ± 3.0 kg/m² in the banded group and 6.7 ± 4.5 kg/m² in the BPD group (P = .01). In the banded group, 11 patients (32.4%) needed removal of the band, 4 patients (11.8%) needed an adjustment, and 4 patients (11.8%) were later converted to BPD. In the BPD group, 2 (10.0%) patients needed revision for severe protein malabsorption.ConclusionsInsufficient weight loss or secondary weight regain after LRYGB is a rare indication for revisional surgery. Banded bypass has modest results for additional weight loss but can help patients suffering from dumping. In very carefully selected cases, BPD can achieve additional weight loss with acceptable complication rate but higher risk for reoperation. Future “adjuvant medical treatments,” such as glucagon-like peptide 1 analogues and other pharmacologic treatment options could be an alternative for achieving additional weight loss and better metabolic response.     

Midterm results of revisional bariatric surgery postsleeve gastrectomy: resleeve versus bypass

BackgroundBariatric surgery has been shown to produce the most predictable weight loss results, with laparoscopic sleeve gastrectomy (SG) being the most performed procedure as of 2014. However, inadequate weight loss may present the need for a revisional procedure.ObjectivesThe aim of this study is to compare the efficacy of laparoscopic resleeve gastrectomy (LRSG) and laparoscopic Roux-en-Y gastric bypass in attaining successful weight loss.SettingPublic hospital following SG.MethodsA retrospective analysis was performed on all patients who underwent SG from 2008–2019. A list was obtained of those who underwent revisional bariatric surgery after initial SG, and their demographic characteristics were analyzed.ResultsA total of 2858 patients underwent SG, of whom 84 patients (3%) underwent either a revisional laparoscopic Roux-en-Y gastric bypass (rLRYGB) or LRSG. A total of 82% of the patients were female. The mean weight and body mass index (BMI) before SG for the LRSG and rLRYGB patients were 136.7 kg and 49.9 kg/m² and 133.9 kg and 50.5 kg/m², respectively. The mean BMI showed a drop from 42.0 to 31.7 (P < .001) 1 year post revisional surgery for the LRSG group and 42.7 to 34.5 (P < .001) for the rLRYGB group, correlating to an excess weight loss (EWL) of 61.7% and 48.1%, respectively. At 5 years post revisional surgery, LRSG patients showed an increase in BMI to 33.8 (EWL = 45.3%), while those who underwent rLRYGB showed a decrease to 34.3 (EWL = 49.2%). Completeness of follow-up at 1, 3, and 5 years for rLRYGB and LRSG were 67%, 35%, and 24% and 45%, 21%, and 18%, respectively.ConclusionsRevisional bariatric surgery is a safe and effective method for the management of failed primary SG. LRSG patients tended to do better earlier on; however, it leveled off with those who underwent rLRYGB by 5 years.     

Single-anastomosis duodenoileal bypass with sleeve in the United States: a first comparative safety analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program database

BackgroundThe single-anastomosis duodenoileal bypass with sleeve (SADI-S) is a relatively new bariatric procedure. In 2020, the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) started reporting outcomes for SADI-S.ObjectivesWe aimed to study the perioperative safety of SADI-S and compare it with other established bariatric procedures utilizing the MBSAQIP database.SettingAcademic hospital, United States.MethodsThe 2020 MBSAQIP Participant Use File was used to evaluate SADI-S outcomes. We included SADI-S primary cases and excluded revisions and concurrent operations. A 5:1 propensity matched analysis (PMA) for 20 variables was performed to compare the outcomes of the SADI-S with the Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) and a 2:1 PMA to the biliopancreatic diversion with duodenal switch (BPD/DS).ResultsThere were 255 primary SADI-S reported in 2020. After PMA, the only significant complications between the RYGB and SADI-S cohorts were Clavien-Dindo grade IVa and IVb (.1% and 1.4% versus 1.6% and 7.1%, respectively). SADI-S had more Clavien-Dindo grade II, IVa, and IVb complications than the SG cohort (1.3% versus 3.5%, P = .03; .2% versus 1.6%, P = 0; 1.% versus 7.1%, P = 0). When compared with BPD/DS, outcomes including readmission, reoperation, and intervention were not statistically significant.ConclusionSADI-S, in its early adoption stage, has a higher incidence of perioperative complications than RYGB and SG. It has comparable 30-day outcomes to BPD/DS.     

Exocrine pancreatic function and dynamic of digestion after restrictive and malabsorptive bariatric surgery: a prospective,cross-sectional,and comparative study

BackgroundGastrointestinal anatomical changes after restrictive and malabsorptive bariatric surgery lead to important disturbances in the process of digestion and absorption of nutrients and could lead to exocrine pancreatic insufficiency (EPI).ObjectiveThe aim of the present study was to evaluate and to compare pancreatic function and the dynamic of digestion and absorption of nutrients after restrictive and malabsorptive bariatric surgical procedures.SettingUniversity Hospital of Santiago de Compostela, Santiago de Compostela, Spain.MethodsA prospective, observational, cross-sectional, comparative study of patients after sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and biliopancreatic diversion with duodenal switch (BPD/DS) was carried out. Patients with obesity who did not undergo surgery were included as control group. Pancreatic function and the dynamic of digestion and absorption of nutrients were evaluated by the ¹³C-mixed triglyceride (¹³C-MTG) breath test. Six-hour ¹³C-cumulative recovery rate (¹³C-CRR), ¹³C exhalation peak, and 1-hour maximal ¹³C-CRR were calculated.ResultsOne-hundred five patients were included (mean age, 49.8 yr; 84 women). Six-hour ¹³C-CRR was significantly reduced after BPD/DS (P < .001) but not after SG and RYGB. EPI was present in 75% of patients after BPD/DS, 8.3% of patients after RYGB, and 4.3% of patients after SG. Compared with the control group who did not undergo surgery, digestion and absorption of nutrients tended to occur earlier after SG, whereas it was delayed after RYGB and mainly after BPD/DS (P < .001).ConclusionBariatric surgery significantly alters the dynamic of the digestive process. EPI is very common after BPD/DS, frequent after RYGB, and less frequent after SG. This information is clinically relevant since EPI is a treatable condition associated with symptoms, nutritional deficiencies, and complications.     

The duodenal switch for morbid obesity: modification of cardiovascular risk markers compared with standard bariatric surgeries

BackgroundObesity is associated with cardiovascular risk factors such as lipid levels and increased levels of C-reactive peptide (CRP). We hypothesized that duodenal switch (DS) would show equivalent or superior risk reduction compared with standard bariatric surgeries.MethodsPatients underwent DS, sleeve gastrectomy (SG), or gastric bypass (GB) over a 2-year period. Body mass index (BMI), lipid panel, and CRP were measured preoperatively and then 3, 6, and 12 months postoperatively.ResultsA total of 130 patients were identified; 42 underwent DS, 40 underwent SG, and 48 underwent GB. All groups had similar sex and comorbidity profiles, but the mean preoperative BMI was greatest in the DS group (mean = 52). At all intervals weight loss was greater in the DS group (P < .01), with a final BMI of 31 for the DS group, 31 for the SG group, and 28 for the GB group. Cholesterol and low-density lipoprotein showed significantly greater improvement at all time points with DS compared with SG and GB (P < .01). Baseline CRP levels among DS patients were double that of SG and GB, but rapidly declined to equivalent levels by 3 months and normalized in 79%.ConclusionsThe DS procedure resulted in a superior reduction in cardiovascular and proinflammatory risk markers compared with GB and SG.     

Prevalence and impact of acid-related symptoms and diarrhea in patients undergoing Roux-en-Y gastric bypass,sleeve gastrectomy,and biliopancreatic diversion with duodenal switch

BackgroundGastrointestinal symptoms are common in the obese population.ObjectivesTo determine the prevalence and importance of acid-related symptoms and diarrhea in 3 different types of bariatric operations: Roux-en-Y gastric bypass (RYGB), sleeve gastrectomy (SG), and biliopancreatic diversion with duodenal switch (BPD/DS).SettingNational data from Sweden.MethodsA total of 58,823 primary bariatric procedures (RYGB: 87.5%, SG: 11.7%, and BPD/DS: .7%) performed from 2007 to 2017 were identified in the Scandinavian Obesity Surgery Registry. Associations between acid-related symptoms and diarrhea, both defined by continuous use of pharmacologic treatment, and predefined outcomes were studied in a multivariate model, adjusted for age, sex, body mass index, and year of surgery.ResultsAt baseline, acid-related symptoms were most common in RYGB (9.9%), while diarrhea was rare. In general, symptomatic patients were older, had more co-morbidities, and scored lower on quality of life compared with the remaining patients. In the multivariate analysis, RYGB patients with acid-related symptoms had reduced risk of prolonged operative time and length of stay, while postoperative complications and reoperations increased by 24% and 36%, respectively. In SG, both symptoms were associated with prolonged operative time and a doubled risk for complications. Symptomatic patients had reduced improvement in quality of life, while no association with the weight result was seen. Postoperatively, acid-related symptoms decreased in RYGB, while doubling in SG. Diarrhea increased 2- and 6-fold in RYGB and BPD/DS, respectively.ConclusionThe 2 gastrointestinal symptoms were associated with increased operative risks and reduced improvement in quality of life. Postoperatively, the respective anatomic alternations affected both gastrointestinal symptoms.     

Bariatric surgery trends in France: 2005–2011

BackgroundBariatric surgery underwent a dramatic change in the past decade in France. The objective of this study was to examine elective bariatric surgical procedures from 2005 to 2011 in France and to determine trends in the use of the procedure.MethodsData were extracted from the National Hospital Database. All admissions involving a bariatric surgery procedure were included. Procedures authorized by the Public Health Authority for the treatment of morbid obesity, including the adjustable gastric banding (AGB), vertical banded gastroplasty (VBG), gastric bypass (GB), sleeve gastrectomy (SG), and biliopancreatic diversion (BPD), either by laparotomic or laparoscopic approach, were retrieved. Revisional procedures, such as band removal or repositioning, band changing, and access device revisions, were also evaluated.ResultsWe observed a 2.5-fold increase in bariatric procedures, from 12,800 in 2005 to 31,000 in 2011. Sleeve gastrectomy and gastric bypass became the most common bariatric procedures in France in 2011, whereas adjustable gastric banding has been decreasing since 2007. During the analysis period, about 50,000 revisional procedures were performed. The number of hospitals (private or public) providing bariatric surgery has considerably increased. However, most of the activity remains confined to a small number of centers, as 50% of all bariatric surgeries are carried out in 12% of hospitals. Bariatric procedures are predominantly performed in private hospitals.ConclusionsIn France the number of bariatric procedures increased considerably between 2005 and 2011. The type of procedures changed, with a constant decrease of AGB and an important increase of SG and GB. Most bariatric procedures are still performed in low volume activity hospitals and in private hospitals.     

One-Anastomosis Gastric Bypass Versus Roux-en-Y Gastric Bypass as Revisional Surgery After Sleeve Gastrectomy: a Systematic Review and Meta-analysis

The demand for revisional bariatric surgery after sleeve gastrectomy (SG) has increased, but the ideal procedure remains unclear. A systematic review and meta-analysis were performed to compare the outcomes of weight loss and safety of one-anastomosis gastric bypass (OAGB) and Roux-en-Y gastric bypass (RYGB) as revisional procedures for failed SG. Four retrospective comparative studies were included, comprising 499 individuals. Patients submitted to OAGB had a more significant total weight loss (TWL) (MD =  − 5.89%; 95% CI − 6.80 to − 4.97) after revisional surgery. Overall early complication rate was similar between procedures (RD = 0.04; 95% CI: − 0.05 to 0.12). Limited and heterogeneous data prevent meaningful conclusions, but the present analysis suggests that OAGB has a better TWL after revisional surgery.

Graphical abstract

     

Outcome following resectional gastric bypass for failed bariatric surgery

PurposeAn increasing number of patients who have failed a primary bariatric procedure are presenting for revisional surgery. There are few studies examining the outcome following any revisional surgery, and none examining resectional gastric bypass (RGB) in this role. We examine the indications, outcome, and patient satisfaction following conversion of a prior bariatric procedure to the RGB.MethodsFrom May 1992 to May 1998, 38 patients underwent RGB as a conversion from prior bariatric operations. Weight loss, indications, and complications were reviewed. A patient survey was used to examine patient satisfaction.ResultsMean body mass index decreased from 46 to 33 kg/m² following revision to RGB. Median weight loss after revision to RGB was 34 kg. From the time of the initial bariatric procedure to post-RGB, mean body mass index decreased from 52 to 33 kg/m². Patients with pre-RGB Visick scores of 3 or 4 improved following RGB. Ninety-five percent of respondents were satisfied with the RGB, and 85% thought it improved their lives. Constant nausea and vomiting and failure of weight control were the most common indications for revision.ConclusionsResectional gastric bypass is a safe and effective revisional procedure for patients who have had failed or complicated bariatric surgery.     

Revisional bariatric surgery to single-anastomosis gastric bypass: a large multi-institutional series

BackgroundReoperation is often required after bariatric procedures. Single-anastomosis gastric bypass (SAGB) is increasingly utilized as a primary bariatric procedure. Few series document SAGB as a revisional bariatric procedure.ObjectivesTo describe our short-term experience with revisional SAGB, focusing on weight loss and reflux symptom outcomes.SettingThree hospitals in Australia with both private and public (government funded) patients.MethodsWe reviewed all revisional SAGB cases from 2012 to 2019 at. Complications were considered significant if they were Clavien-Dindo grade 3a or higher. A phone survey was conducted to assess weight loss outcomes, patient satisfaction, reflux symptoms, and other complications.ResultsWe identified 254 patients who had a revisional bariatric procedure to SAGB (21 previous sleeve gastrectomies and 233 previous adjustable bands), with a mean follow-up of 22 ± 15.6 months (range, 1–55 mo). The mean percentage of excess weight loss was 77% (183 patients, 72%), and the number of patients with follow-ups at 1 and 4 years was 184 (73%) and 35 patients (14%). Within 30 days, there were 29 patients (11%) who required reinterventions (21 endoscopies, 1 interventional radiology procedure, and 7 reoperations) with no deaths. Beyond 30 days, 27 patients (11%) required rerevision to Roux-en-Y gastric bypass for reflux symptoms and 10 (4%) required a laparotomy or laparoscopy for another reason (e.g., bowel obstruction). At a median follow-up of 36.6 months, 87 patients (34%) completed a phone survey, 45 (52%) of whom were taking proton pump inhibitors and 66 patients (76%) of whom were satisfied with their experience.ConclusionIn our series, revision to SAGB was safe, with low short-term morbidity and favorable weight loss outcomes. However, beyond 1 year, a large proportion of patients experienced severe reflux symptoms and required rerevision.     

Trends in revisional bariatric surgery using the MBSAQIP database 2015-2017

BackgroundThe third most common bariatric surgery is revisional bariatric surgery. The American College of Surgeons tracks outcomes using the Metabolic and Bariatric Surgery Accreditation Quality Initiative Program database. We used this database to examine trends in revisional bariatric surgery.ObjectiveTo evaluate how trends in bariatric revisional surgery have changed in recent years.SettingUniversity Hospital, United States.MethodsThe Metabolic and Bariatric Surgery Accreditation Quality Initiative Program database for 2015 to 2017 was examined for revisions of bariatric surgery. Patients who underwent revisional bariatric surgery were identified by the primary Current Procedural Terminology code, the REVCONV and PREVIOUS_SURGERY field as well as secondary Current Procedural Terminology codes. There is no exact code for sleeve gastrectomy (SG) to laparoscopic Roux-en-Y gastric bypass (LRYGB), so we used 43644 (GB)+REVCONV+PREVIOUS_SURGERY for this.ResultsFor the years 2015 to 2017 there were 57,683 revisions/conversions of 528,081 patients. The number of revisions increased over the study period by 5213 cases. The most common revision was laparoscopic adjustable gastric band (LAGB) to SG with 15,433 cases and the second was LAGB to LRYGB with 10,485 cases. There were 14,715 LAGB removals. It is more difficult to track SG to LRYGB but there were 8491 unlisted cases, which may have been sleeve to bypass.ConclusionLAGBs are being taken out or converted, and this group makes up the largest portion of revisions and conversions. It is difficult to track SG to LRYGB, but the number of unlisted cases continues to climb. This will likely surpass LAGB conversions with time. The Metabolic and Bariatric Surgery Accreditation Quality Initiative Program should be modified to capture revisions/conversions of SG.     

Adjustable gastric banding as revisional bariatric procedure after failed gastric bypass—intermediate results

BackgroundAlthough gastric bypass is the most common bariatric procedure in the United States, it is has been associated with a failure rate of 15% (range 5–40%). The addition of an adjustable gastric band to Roux-en-Y gastric bypass has been reported to be a useful revision strategy in a small series of patients with inadequate weight loss after proximal gastric bypass.MethodsWe report on 22 patients who presented with inadequate weight loss or significant weight regain after proximal gastric bypass. All patients underwent revision with the placement of an adjustable silicone gastric band around the proximal gastric pouch. The bands were adjusted at 6 weeks postoperatively and beyond, as needed. Complications and weight loss at the most recent follow-up visit were evaluated.ResultsThe mean age and body mass index at revision was 41.27 years (range 25–58) and 44.8 ± 6.34 kg/m², respectively. Patients had experienced a loss of 19%, 27%, 47.3%, 42.3%, 43%, and 47% of their excess weight at 6, 12, 24, 36, 48, and 60 months after the revisional procedure, respectively. Three major complications occurred requiring reoperation. No band erosions have been documented.ConclusionThe results from this larger series of patients have also indicated that the addition of the adjustable silicone gastric band causes significant weight loss in patients with poor weight loss outcomes after gastric bypass. That no anastomosis or change in absorption is required makes this an attractive revisional strategy. As with all revisional procedures, the complication rates appear to be increased compared with a similar primary operation.     

Reluctance in duodenal switch adoption: an international survey among bariatric surgeons

BackgroundDuodenal switch (DS) still comprises less than 1% of the overall primary procedures in the United States. Our aim is to explore the reasons behind surgeons’ reluctance to DS adoption.ObjectivesTo determine perceived reasons for the widespread lack of adoption of the DS.SettingWorldwide survey of closed bariatric surgery social media groups.MethodsA standardized questionnaire was posted on 2 closed social media bariatric groups. DS was used as an umbrella term that includes traditional BPD with duodenal switch, single anastomosis duodeno-ileostomy (SADI) and loop DS. The questionnaire link was accessible to bariatric surgeons only for a period of 1 week.ResultsSurvey responses (n = 193) were analyzed. The majority (75%) were fellowship-trained bariatric surgeons, and 58% were practicing in the United States. Although 72.9% believed DS to be a good bariatric procedure, it was not being performed by 64% of the respondents. The main reasons behind DS nonadoption included a perceptible high long-term complication rate (43.5%), lack of training (38.1%), and procedure seldomly demanded by patients (31.5%). For surgeons who perform DS, 16.4% use it as a revisional procedure, mainly following sleeve gastrectomy (40.5%). Finally, 29.5% of surgeons believed that the American Society of Metabolic and Bariatric Surgery endorsement of SADI will encourage them to add DS to their practice. They are mostly planning to do so by visiting other surgeons and getting proctored (42.6%).ConclusionThis survey will help guide bariatric societies and governing bodies in addressing the issues and concerns preventing surgeons from adopting DS in their practice by elucidating the chief reasons and circumstances behind this occurrence.     

Revisional bariatric surgery for inadequate weight loss

When behavioral or anatomic issues are not present, revisional surgery should be approached with a goal of treating malnutrition or enhancing excess weight loss. Unfortunately, no randomized controlled trials currently exist to help the practicing bariatric surgeon choose which revisional procedure to perform. A review of the available literature was undertaken and compared with our standard practices to see if any guidelines could be devised. At our institution, patients who have failed jejunal-ileal bypass are reversed in the setting of malnutrition and converted to a sleeve gastrectomy (SG) followed by duodenal switch (DS) as a second stage procedure in the setting of inadequate weight loss. After failed vertical banded gastroplasty (VBG), patients are converted to a Roux-en-Y gastric bypass (RYGBP). After failed adjustable gastric band (AGB) placement, we perform RYGBP. In the super-obese, we leave the band in place or convert to a DS with band removal. In patients with failed RYGBP, we convert our patients to DS, but placement of an AGB may be an acceptable option.     

Endoluminal procedures for bariatric patients: expectations among bariatric surgeons

BackgroundPrimary and revisional bariatric endoluminal procedures are currently being developed. Acceptable levels of risk and weight loss for these procedures have not yet been established. The aim of this study was to evaluate the expectations and concerns among bariatric surgeons regarding these procedures.MethodsThe American Society for Metabolic and Bariatric Surgery Emerging Technologies Committee developed a questionnaire that was distributed to the membership. Risk tolerance was assessed with comparison to commonly performed endoscopic and bariatric procedures. The percentage of excess weight loss (EWL) ranges were provided to assess the expectations for results 1 year after the procedure.ResultsA total of 214 responses were returned. The acceptable level of risk to achieve 10–20% EWL after primary and revisional procedures was equivalent to, or less than, that of a therapeutic endoscopic procedure for 81% and 76% of respondents, respectively. The acceptable level of risk to achieve 30–40% EWL after primary and revisional procedures was equivalent to that after laparoscopic adjustable gastric banding for 45% and 35% of respondents, respectively and equivalent to that after laparoscopic Roux-en-Y gastric bypass for 8% and 22%, respectively. In addition, 62% of respondents responded that 10–30% EWL would be acceptable for revisional procedures, and 35% responded that 10–30% EWL would be acceptable after a primary procedure. The primary concern was unproven efficacy, followed by durability, poor weight loss, availability of equipment, and procedural risk. Finally, 58% would not be willing to recommend an endoluminal procedure until the efficacy has been established, regardless of the risk.ConclusionRisk tolerance and weight loss expectations among bariatric surgeons are different for primary and revisional endoscopic procedures. Most surgeons were unwilling to consider endoluminal procedures for their patients until the efficacy has been proven.     

The first case report of failed single-anastomosis-duodeno-ileal bypass converted to One anastomosis gastric bypass/Mini-gastric bypass

IntroductionThe established single-anastomosis-duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is based on a sleeve gastrectomy (SG) as the restrictive part of the procedure. Due to preserved pylorus, SG has the disadvantage of a high-pressure system with de novo or worsening of existing gastroesophageal reflux disease (GERD).Case presentationA female patient presented herself due to protracted GERD and weight regain after multiple bariatric surgeries. At an initial weight of 158 kg (BMI 62.5 kg/m²) the patient underwent adjustable gastric banding in 2009. After band removal in slippage, the patient underwent SG at a weight of 135 kg in 2012. Nine months after SG, SADI-S was performed as a malabsorptive second step procedure. After 32 months the patient suffered from severe GERD under proton pump inhibitor therapy. Actual weight was 107.9 kg (BMI 42.7 kg/m²). Upper endoscopy showed a hiatal hernia and esophagitis B and dorsal hiatoplasty was performed. After 6 months in still existing severe GERD and weight regain indication for laparoscopic conversion to One anastomosis gastric bypass/Mini-gastric bypass (OAGB/MGB) was given, aiming to reduce the high-pressure system of SG in a low-pressure system of OAGB/MGB. One year after revisional surgery reflux was reported to be only occasionally. Further weight loss was seen (91 kg, BMI 36 kg/m², EWL 67.7%).ConclusionSG as the restrictive part of SADI-S may lead to GERD and consequently to pathologic eating of “soft” calories, that defeats the operation and results in weight regain. OAGB/MGB might be a simple method to rescue such failed SADI-S patients.