Two-step conversion surgery after failed laparoscopic adjustable gastric banding. Comparison between laparoscopic Roux-en-Y gastric bypass and laparoscopic gastric sleeve

BackgroundDespite its worldwide popularity, laparoscopic adjustable gastric banding (LAGB) requires revisional surgery for failures or complications, in 20–60% of cases. The purpose of this study was to compare in terms of efficacy and safety, the conversion of failed LAGB to laparoscopic Roux-en-Y gastric bypass (LRYGB) and laparoscopic sleeve gastrectomy. (LSG).MethodsThe bariatric database of our institution was reviewed to identify patients who had undergone conversion of failed LAGB to LRYGB or to LSG, from November 2007 to June 2012.ResultsA total of 108 patients were included. Of these, 74 (68.5%) underwent conversion to LRYGB and 34 to LSG. All of the procedures were performed in 2-stage and laparoscopically. The mean follow-up for the LRYGB group was 29.1±17.9 months while for the LSG patients was 24.2±14.3 months. The mean body mass index (BMI) prior LRYGB and LSG was 45.6±7.8 and 47.5±5.6 (P = .09), respectively. Postoperative complications occurred in 16.2% of the LRYGB patients and in 2.9% of the LSG group (P = .04). Mean percentage of excess weight loss was 59.9%±16.2% and 70.2%±16.7% in LRYGB, and it was 52.2%±11.4% and 59.9%±14.4% in LSG at 12 months (P = .007) and 24 months (P = .01) after conversion.ConclusionIn this series, LRYGB and LSG are both effective and adequate revisional procedure after failure of LAGB. While LRYGB seems to ensure greater weight loss at 24 months follow-up, LSG is associated with a lower postoperative morbidity.     

Comparison of the incidence of cholelithiasis after sleeve gastrectomy and Roux-en-Y gastric bypass: a meta-analysis

BackgroundBariatric surgery could increase the risk of cholelithiasis, although it is unclear whether the incidence rates of cholelithiasis are similar after different bariatric procedures.ObjectivesTo compare the incidence rates of cholelithiasis after sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) in people with obesity.SettingMeta-analysis of cohort studies.MethodsWe searched the PubMed and Web of Science databases for relevant studies before December 2020, and estimated the summary odds ratios (OR) and 95% confidence intervals (CI) using a random-effects model or fixed-effects model, according to the heterogeneity.ResultsIn total, 8 cohort studies were included in this meta-analysis, and 94,855 and 106,844 participants received SG and RYGB, respectively. Compared with those receiving RYGB, the summary results showed that participants receiving SG had a 35% lower rate of cholelithiasis (OR, .65; 95% CI, .49–.86). Also, the participants receiving SG had a significantly lower incidence of cholecystectomy than those receiving RYGB (OR, .54; 95% CI, .30–.99). In a subgroup analysis, SG was associated with a significantly lower incidence of subsequent cholelithiasis than RYGB in both Western and non-Western countries. SG led to a significantly lower incidence of cholelithiasis than RYGB only when the follow-up was <2 years instead of over 2 years.ConclusionParticipants receiving SG had a significantly lower incidence of cholelithiasis than those receiving RYGB, particularly within the first 2 years after the bariatric surgery.     

Predictors of gallstone formation after bariatric surgery: a multivariate analysis of risk factors comparing gastric bypass, gastric banding, and sleeve gastrectomy

Background  Risk factors for gallstone formation in the general population have been well studied while those after weight reduction surgery are unknown. The aim of this study was to identify the risk factors for the development of symptomatic gallstones after bariatric surgery. Method  Retrospective review was performed for patients who underwent laparoscopic Roux-en-Y gastric bypass (RYGBP), adjustable gastric banding (LAGB) or sleeve gastrectomy (LSG) between 2004 and 2006. Statistical evaluation was performed using a univariate and multivariate analysis. Risk factors, including age, gender, preoperative body mass index (BMI), BMI > 45 kg/m², diabetes mellitus, hyperlipidemia, types of operation, and weight loss >25% of original weight, were analyzed for their association with postoperative symptomatic gallstones formation. Results  670 laparoscopic RYGBP, 47 LAGB, and 79 LSG were performed in our institute. Preoperative gallbladder disease, as indicated by presence of gallstones or sludge on preoperative transabdominal ultrasound, or previous cholecystectomy, were found in 25.3, 14.9, and 30.4% of patients who subsequently had RYGBP, LAGB, and LSG, respectively. A total of 586 patients were included for analysis. Mean follow-up was 25.9 (range 12–42) months. Overall rate of symptomatic gallstone formation was 7.8% and mean time for its development was 10.2 (range 2–37) months. Incidence of symptomatic gallstones with complications as initial presentation was found in 1.9% of the patients. Logistic regression analysis showed that only postoperative weight loss of more than 25% of original weight was associated with symptomatic gallstones formation [B = 1.482, SE = 0.533, odds ratio 4.44, 95% confidence interval (CI) 1.549–12.498, p = 0.005]. Conclusions  Traditional risk factors for gallstone formation in the general population are not predictive of symptomatic gallstone formation after bariatric surgery. Weight loss of more than 25% of original weight was the only postoperative factor that can help selecting patients for postoperative ultrasound surveillance and subsequent cholecystectomy once gallstones were identified. Accepted as poster, SAGES 2008 and presented April, 10–12th. An erratum to this article can be found at     

Concurrent hiatal hernia repair and bariatric surgery: outcomes after sleeve gastrectomy and Roux-en-Y gastric bypass

BackgroundHiatal hernias are often repaired concurrently with bariatric surgery to reduce risk of gastroesophageal reflux disease–related complications.ObjectivesTo examine the association between concurrent hiatal hernia repair (HHR) and bariatric outcomes.SettingA 2010–2017 U.S. commercial insurance claims data set.MethodsWe conducted a retrospective cohort study. We identified adults who underwent sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB) alone or had bariatric surgery concurrently with HHR. We matched patients with and without HHR and followed patients up to 3 years for incident abdominal operative interventions, bariatric revisions/conversions, and endoscopy. Time to first event for each outcome was compared using multivariable Cox proportional hazards modeling.ResultsWe matched 1546 SG patients with HHR to 3170 SG patients without HHR, and we matched 457 RYGB patients with HHR to 1156 RYGB patients without HHR. A total of 73% had a full year of postoperative enrollment. Patients who underwent concurrent SG and HHR were more likely to have additional abdominal operations (adjusted hazard ratio [aHR], 2.1; 95% CI, 1.5–3.1) and endoscopies (aHR, 1.5; 95% CI, 1.2–1.8) but not bariatric revisions/conversions (aHR, 1.7; 95% CI, .6–4.6) by 1 year after surgery, a pattern maintained at 3 years of follow-up. Among RYGB patients, concurrent HHR was associated only with an increased risk of endoscopy (aHR, 1.4; 95% CI, 1.1–1.8)) at 1 year of follow-up, persisting at 3 years.ConclusionsConcurrent SG/HHR was associated with increased risk of some subsequent operative and nonoperative interventions, a pattern that was not consistently observed for RYGB. Additional studies could examine whether changes to concurrent HHR technique could reduce risk.     

Nephrolithiasis after bariatric surgery: A comparison of laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy

IntroductionLaparoscopic Roux-en-Y gastric bypass (LRYGB) is known to increase risk for calcium oxalate nephrolithiasis due to hyperoxaluria; however, nephrolithiasis rates after laparoscopic sleeve gastrectomy (LSG) are not well described. Our objective was to determine the rate of nephrolithiasis after LRYGB versus LSG.MethodsThe electronic medical records of patients who underwent LRYGB or LSG between 2001 and 2017 were retrospectively reviewed.Results1,802 patients were included. Postoperative nephrolithiasis was observed in 133 (7.4%) patients, overall, and 8.12% of LRYGB (122/1503) vs. 3.68% of LSG (11/299) patients (P < 0.001). Mean time to stone formation was 2.97 ± 2.96 years. Patients with a history of UTI (OR = 2.12, 95%CI 1.41–3.18; P < 0.001) or nephrolithiasis (OR = 8.81, 95%CI 4.93–15.72; P < 0.001) were more likely to have postoperative nephrolithiasis.ConclusionThe overall incidence of symptomatic nephrolithiasis after bariatric surgery was 7.4%. Patients who underwent LRYGB had a higher incidence of nephrolithiasis versus LSG. Patients with a history of stones had the highest risk of postoperative nephrolithiasis.     

Adjustments to warfarin dosing after gastric bypass and sleeve gastrectomy

Background

Warfarin dosing after bariatric surgery may be influenced by alterations in gastrointestinal pH, transit time, absorptive surface area, gut microbiota, food intake, and adipose tissue.

Early postoperative complications after gastric bypass revisional surgery in patients with previous sleeve gastrectomy versus primary gastric bypass

BackgroundRevisional bariatric surgery (RS) is indicated if there is weight regain or insufficient weight loss, no improvement or reappearance of co-morbidities, or previous bariatric surgery complications. It has been associated with higher postoperative morbidity.ObjectiveTo evaluate the early postoperative complications (<30 d) of Roux-en-Y gastric bypass RS (RYGB-RS) after primary sleeve gastrectomy (SG-1) compared with primary RYGB (RYGB-1) at a bariatric surgery referral center.SettingDepartment of General and Digestive Surgery of General Universitary Hospital of Alicante, Spain.MethodsRetrospective cohort study comparing RYGB-RS after SG-1 and RYGB-1 between January 2008 and March 2021. Postoperative complications, hospital stay, mortality, and readmissions were analyzed.ResultsSix hundred and twenty-eight RYGB surgeries (48 RYGB-RS, 580 RYGB-1) were studied. The mean age of patients undergoing RYGB-RS was 50 years, compared with 46 years in the RYGB-1 group (P = .017). Mean initial body mass index was 44.2 kg/m² (RYGB-RS) versus 47.6 kg/m² (RYGB-1; P = .004). Cardiovascular risk factors were higher in the RYGB-1 group (P < .05). Indications for RS were weight regain or insufficient weight loss (72.9%), weight regain or insufficient weight loss plus gastroesophageal reflux disease (14.6%), and gastroesophageal reflux disease (12.5%). There were no differences in the frequency of complications (RYGB-RS 22.9% vs RYGB-1 20.5%) or in their severity (Clavien–Dindo ≥IIIa; RYGB-RS 10.4% vs RYGB-1 6.4%; P > .05). There were no differences in emergency room visits (RYGB-RS at 12.5% vs RYGB-1 at 14.9%) or in readmissions (RYGB-RS at 12.5% vs RYGB-1 at 9.4%).ConclusionNo differences were observed between primary RYGB and revisional RYGB in early morbidity, mortality, emergencies, or readmissions. Revisional bariatric surgery is a safe procedure at referral centers and must be done by expert hands.     

Beyond 5 years: a matched cohort of sleeve gastrectomy versus gastric bypass

BackgroundLaparoscopic sleeve gastrectomy (LSG) has demonstrated excellent short-term outcomes. However, existing studies suffer from loss to follow-up, and most long-term data focus on laparoscopic Roux-en-Y gastric bypass (LRYGB). This study compares weight loss in patients ≥5 years from LSG with that in matched patients who underwent LRYGB.ObjectivesThe purpose of this study was to compare long-term weight loss in patients undergoing LRYGB and LSG.SettingUniversity hospital, United States.MethodsWe retrospectively evaluated patients who underwent LSG before August 2012 with follow-up data ≥5 years. LSG patients were matched 1:1 with LRYGB patients by sex, age at surgery, and preoperative body mass index. Univariate and multivariate analyses were performed with weight loss at the longest duration the primary outcome.ResultsOne-hundred and sixty-five patients underwent LSG during the study period. Long-term follow-up data (≥5 years) were available for 85 patients (52%). There were no preoperative differences between those with and without follow-up data. Six LSG patients (7%) were excluded because they underwent reoperation that altered intestinal anatomy. Of the 79 patients remaining, 75 were matched with post-LRYGB patients. The average follow-up period was 6.4 years for LSG patients and 6.5 years for LRYGB patients (P = .08, not significant). Change in body mass index was 6.81 kg/m² for LSG patients and 13.11 kg/m² for LRYGB patients. Percentage of total body weight loss was 15.25% for LSG patients and 28.73% for LRYGB patients. Percentage of excess body weight loss was 37% for LSG patients and 67% for LRYGB patients (P < .0001). Weight loss for LSG patient follow-up in clinic versus outside the clinic was 46% versus 34% (P = .18, not significant).ConclusionsLSG is now the most common bariatric surgery in the United States. Long-term data are needed to confirm that observed short-term favorable outcomes are maintained. Recent studies have produced divergent results. We observed significantly less weight loss at ≥5 years in LSG patients compared with matched LRYGB patients.     

Cross-sectional long-term micronutrient deficiencies after sleeve gastrectomy versus Roux-en-Y gastric bypass: A pilot study

BackgroundNutritional deficiencies are highly prevalent in obese patients. Bariatric surgery has been associated with adverse effects on homeostasis of significant vitamins and micronutrients, mainly after gastric bypass. The aim of the present study was to compare the extent of long-term postsurgical nutritional deficiencies between Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG).MethodsThis cross-sectional, pilot study included 95 patients who underwent RYGB or SG surgery with a mean follow-up of 4 years. Demographic, anthropometric, and biochemical parameters were compared according to the type of surgery.ResultsBoth types of surgery were associated with significant nutritional deficiencies. Vitamin B12 deficiency was significantly higher in patients with RYGB compared with SG (42.1% versus 5%, P = .003). The type of surgery was associated neither with anemia nor with iron or folate deficiency (SG versus RYGB: anemia, 54.2% versus 64.3%, P = .418; folate deficiency, 20% versus 18.4%, P = .884; iron deficiency, 30% versus 36.4%, P = .635).ConclusionDuring a mean follow up period of 4 years postRYGB or SG, patients were identified with several micronutrient deficiencies, including vitamin D, folate, and vitamin B12. SG may have a more favorable effect on the metabolism of vitamin B12 compared with RYGB, being associated with less malabsorption. Adherence to supplemental iron and vitamin intake is of primary significance in all cases of bariatric surgery.     

Anemia,iron and vitamin B12 deficiencies after sleeve gastrectomy compared to Roux-en-Y gastric bypass: a meta-analysis

BackgroundThe effective treatment of postoperative anemia and nutritional deficiencies is critical for the successful management of bariatric patients. However, the evidence for nutritional risk or support of bariatric patients remains scarce. The aims of this study were to assess current evidence of the association between 2 methods of bariatric surgery, sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), and postoperative anemia and nutritional deficiencies.MethodsMEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials were searched for English-language studies using a list of keywords. Reference lists from relevant review articles were also searched. In the authors’ meta-analysis, they included studies with a duration of>12 months, those comparing SG with RYGB, and those with available outcome data for postoperative anemia and iron and vitamin B₁₂ deficiencies. Of 36 potentially relevant studies, 9 met the inclusion criteria. Data were combined by means of a fixed-effects model or random-effects model.ResultsCompared with the SG group, the odds ratio for postoperative vitamin B₁₂ deficiency in the RYGB group was 3.55 (95% confidence interval, 1.26–10.01; P<.001). In the subgroup analysis, studies in which prophylactic iron or vitamin B₁₂ was administered lost significance in the odds ratio for postoperative vitamin B₁₂ deficiency.ConclusionThe authors’ findings suggest that SG is more beneficial than RYGB with regard to postoperative vitamin B₁₂ deficiency risk, whereas the 2 methods are comparable with regard to the risk of postoperative anemia and iron deficiency. Postoperative prophylactic iron and B₁₂ supplementation, in addition to general multivitamin and mineral supplementation, is recommended based on the comparable deficiency risk of the 2 methods as indicated by subgroup analysis.     

Laparoscopic sleeve gastrectomy versus Roux-en-Y gastric bypass in cardiovascular risk reduction: A match control study

Background

There is a paucity of studies comparing risk reduction of the atherosclerotic cardiovascular disease (ASCVD) and Framingham-body mass index (BMI) Coronary Heart risk score after a laparoscopic Roux-en-Y gastric bypass (RYGB), and few studies have assessed the efficacy of laparoscopic sleeve gastrectomy (SG) in reducing cardiovascular risk.

袖状胃切除术与胃旁路术治疗GK大鼠疗效的比较研究

目的:对比袖状胃切除术与胃旁路术治疗大鼠非肥胖2型糖尿病的疗效。方法:30只GK大鼠随机分为袖状胃切除术组(SG组)、胃旁路术组(RYGB组)、假手术组(SO组),每组10只。观察术后各组存活情况,并根据情况检测各组术前及术后第1、4、8周的体质量、空腹血糖、口服糖耐量试验峰值、糖化血红蛋白比值及血清胰岛素水平。结果:SG组大鼠手术存活率100%,RYGB组手术存活率90%,SO组大鼠全部健康存活,3组手术存活率比较差异无统计学意义(P=0.305)。术后8周时,各组体质量均超过术前,RYGB组明显低于SO组和SG组(P0.05)。空腹血糖在SG组和RYGB组术后第1周即有下降趋势,术后8周时SG组较SO组降低,差异有统计学意义(P0.05),RYGB组较SO组明显降低(P0.01),RYGB组与SG组比较差异亦有统计学意义(P0.05)。口服糖耐量试验峰值在SG组和RYGB组术后1周即有下降,术后8周时SG组较SO组虽有降低但差异无统计学意义(P0.05),RYGB组较SO组明显降低(P0.01)。术前各组糖化血红蛋白比值差异无统计学意义,术后8周时SG组较SO组降低(P0.05),RYGB组较SO组明显降低(P0.01),RYGB组与SG组差异亦有统计学意义(P0.05)。8周后胰岛素水平SO组与SG组比较差异无统计学意义(P0.05),RYGB组在8周后升高明显,与前2组比较差异具有统计学意义(P0.05)。结论:袖状胃切除术与胃旁路术术后存活率相近,但胃旁路术治疗GK大鼠的疗效优于袖状胃切除术。     

Impact of Roux-en-Y gastric bypass and sleeve gastrectomy on fetal growth and relationship with maternal nutritional status

Background

There is a lack of evidence on whether sleeve gastrectomy (SG), which induces fewer nutritional deficiencies than Roux-en-Y gastric bypass (RYGB), also affects fetal growth (FG).

袖带胃减容加残胃捆扎术的减重疗效和残胃扩张的实验研究

目的通过建立袖带胃减容加残胃捆扎手术实验动物模型，观察减重效果及残胃扩张情况。方法20只SD大鼠接受袖带胃减容加残胃捆扎手术（实验组），另20只SD大鼠接受袖带胃减容手术（实验对照组），10只SD大鼠接受剖腹探查手术（空白对照组）；在术前、术后第1天和术后16周内每隔2周测量体质量。结果实验组15只SD大鼠存活，实验对照组13只SD大鼠存活．空白对照组10只SD大鼠均存活。空白对照组术后体重增长明显；实验对照组术后2周体重恢复至术前水平：实验组在术后4周恢复至术前水平，其体质量增长明显较前两组慢（P〈0．01）。与实验组相比，实验对照组术后胃扩张明显。结论袖带胃减容加残胃捆扎手术限制了术后胃的扩张．减重效果好．且安全可行。     

Single-stage conversions from failed gastric band to sleeve gastrectomy versus Roux-en-Y gastric bypass: results from the United Kingdom National Bariatric Surgical Registry

Background

For patients in whom laparoscopic adjustable gastric band has failed, conversion to Roux-en-Y gastric bypass and laparoscopic sleeve gastrectomy are both options for further surgical treatment. There are limited data comparing these 2 procedures. The National Bariatric Surgery Registry is a comprehensive United Kingdom–wide database of bariatric procedures, in which preoperative demographic characteristics and clinical outcomes are prospectively recorded.

Systematic review on sleeve gastrectomy or Roux-en-Y gastric bypass surgery for refractory gastroparesis

Management of refractory gastroparesis is challenging after diet, prokinetics, and long-term nutritional support have failed. In this review, the efficacy and safety of surgical interventions (sleeve gastrectomy and Roux-en-Y gastric bypass surgery) are evaluated systematically in patients with refractory gastroparesis. The PubMed, Embase, and Scopus databases were searched to identify relevant studies published up to June 2021. Outcome of interest was symptom improvement and gastric emptying. Nineteen studies with 222 refractory gastroparesis patients (147 Roux-en-Y gastric bypass, 39 sleeve gastrectomy, and 36 subtotal gastrectomy) were included. All studies reported symptom improvement postoperatively, particularly vomiting and nausea. Gastric emptying improved postoperatively in 45% up to 67% for sleeve gastrectomy and 87% for Roux-en-Y gastric bypass. The findings of our systematic review suggest that sleeve gastrectomy and Roux-en-Y gastric bypass surgery improve symptoms and gastric emptying in patients with refractory gastroparesis. Surgery may be effective as treatment for a small group of patients when all other therapies have failed.     

Metabolic comparison of one-anastomosis gastric bypass,single-anastomosis duodenal-switch,Roux-en-Y gastric bypass,and vertical sleeve gastrectomy in rat

Background

One-anastomosis gastric bypass (OAGB) and single-anastomosis duodenal switch (SADS) have become increasingly popular weight loss strategies. However, data directly comparing the effectiveness of these procedures with Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (SG) are limited.