One-Stage Vs. Two-Step One Anastomosis Duodenal Switch (OADS/SADI-S): A Safety and Efficacy Single-Center Propensity-Score Matched Analysis.

INTRODUCTION: One Anastomosis Duodenal Switch (OADS/SADI-S) is used both as a one stage and a second-step procedure, either planned or revisional after a failed sleeve gastrectomy. However, there is lack of adjusted comparative evidence validating its use. MATERIAL AND METHODS: Propensity-score matched comparison between patients submitted to one-stage vs. two-step OADS, adjusted by age, gender, and initial body mass index (BMI). RESULTS: One hundred ninety-five patients (130 one-stage and 65 two-step OADS) were included, with mean initial BMI 52.4 kg/m2. Overall complication rate was 6.6% in the short-term (3.3% Clavien-Dindo ≥ III), and 7.3% in the long-term, with no differences between groups. Follow-up at 1 and 3 years was 83.6% and 61.5%. After one-stage OADS, total weight loss was 36.6 ± 8.2% at 1 year and 30.4 ± 10.3% at 3 years, vs. 30.2 ± 9.4% and 25.6 ± 10.2% after two-steps OADS (p = 0.021). Resolution rates of diabetes mellitus, hypertension, dyslipidemia, and obstructive sleep apnea were 86.4%, 80.4%, 78.0%, and 73.3%, with no differences between groups. CONCLUSION: One-stage OADS is a safe and effective bariatric technique for patients with grade III and IV obesity. The two-step strategy does not reduce postoperative risks and may compromise weight loss results at mid-term.

Bone loss after bariatric surgery is observed mainly in the hip trabecular compartment and after hypoabsorptive techniques.

We evaluated the impact of bariatric surgery on bone mineral density (BMD) and microarchitecture over one year using dual-energy X-ray absorptiometry (DXA), the trabecular bone score (TBS), and 3D-DXA to assess changes after different surgical techniques. This prospective, single-center study of 153 patients with severe obesity contrasts the effects on bone health of sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and duodenal switch/single anastomosis duodeno-ileostomy with sleeve gastrectomy (DS/SADIS). To our knowledge, this is the first study to evaluate patients undergoing DS/SADIS and to incorporate 3D-DXA analysis in the assessment of bone loss. Patients were 81 % female with a mean age of 50 ± 9 years. Fifty-four per cent underwent SG; 16 %, RYGB; and 30 %, DS/SADIS. Our findings revealed a significant decrease in areal BMD at the LS (-3.49 ± 5.44 %), FN (-5.24 ± 5.86 %), and TH (-8.06 ± 5.14 %) one year after bariatric surgery. Bone microarchitecture at the LS assessed by TBS was degraded in 30 % of patients. Proximal femur 3D-DXA analysis showed that surgery-induced bone loss predominantly affects the trabecular compartment (Trabecular volumetric (v) BMD: -8.00 ± 6.57 %) rather than the cortical compartment (Cortical vBMD: -1.37 ± 2.79 %). These results suggest hypoabsorptive and mixed techniques (DS/SADIS and RYGB) were associated with greater BMD loss and deterioration of microarchitecture than restrictive techniques (SG). The primary determinants of bone density and impairment of microarchitecture were the extent of weight loss and the type of surgical procedure. Despite overall bone loss, Z-score assessments indicated that post-surgical bone status remained within or above the average ranges compared to a healthy population, except for TH following DS/SADIS. In conclusion, our research shows differences in the impact of bariatric surgery techniques on bone density and microarchitecture, emphasizing the need for careful postoperative monitoring of bone health, particularly in patients undergoing hypoabsorptive and mixed procedures.

Patient-Reported Outcomes and Quality of Life After Single-Anastomosis Duodeno-ileal Bypass with Sleeve Gastrectomy (SADI-S): a Cross-Sectional Study with 283 Patients from a Single Institution.

INTRODUCTION: Single-anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a safe and effective technique with good short- and mid-term weight control and associated medical problems remission for patients with a body mass index (BMI) > 45 kg/m2. The aim of this study was to analyze patient-reported symptoms, specifically symptomatic gastroesophageal reflux disease symptoms (GERD), depositional habit, and quality of life (QOL) following SADI-S, using telemedicine and validated tests. METHODS: A prospective unicentric cross-sectional study was conducted including all patients submitted to SADI-S in the University Hospital of Bellvitge from May 2014 to September 2019. A baseline control group was composed of 67 patients who were planning to undergo SADI-S in the following 4 months. Patients were divided into four groups: pre-SADIS, < 2 years, 2-3 years, and > 3 years after surgery. The information gathered via a telematic questionnaire was analyzed and compared with its presence in patients' clinical history derived from the last presential visit. RESULTS: The response rate to telematic tests was 86.9%. The mean BMI exhibited significant differences depending on the moment of evaluation: 50.8 kg/m2, 30.0 kg/m2, 31.1 kg/m2, and 32.7 kg/m2 at pre-SADIS, < 2, 2-3, and > 3 years follow-up, respectively (p < 0.001). The proportion of GERD symptoms increased over time (17.9%, 18.8%, 26.9%, and 30.2%, p = 0.320). After SADIS, the percentage of patients with loose stools was progressively higher (17.4% vs 25.4% vs 30.2%, p = 0.04). Patients with < 2-year follow-up presented an improvement in both physical component (PCS) and mental component (MCS) summaries compared to the baseline group (PCS = 51.3, and MCS = 49.4). The mean BMI of patients with PCS ≥ 50 was 31.9 kg/m2, compared with 41.7 kg/m2 in the PCS < 50 group (p < 0.001). In the MCS ≥ 50 group, there were more patients with a BMI < 35 kg/m2 than the MCS < 50 group (66.7% vs 48.7%, p = 0.004). Telematic follow-up offered a more systemic and detailed information: in the last presential visit only, 13.9% of patients had complete data regarding weight evolution, remission of associated medical problems, GERD symptoms, and depositional habit in comparison with the 82.9% of patients with telematic follow-up (p < 0.001). CONCLUSION: Weight control is the main factor related to long-term QOL after SADI-S. The incidence of GERD symptoms and diarrhea was up to 30% in patients with > 3-year follow-up. Monitoring postoperative patient-related symptoms with validated objective tests seems a feasible and useful resource for the long-term follow-up of patients submitted to SADI-S.

A specific gut microbiota signature is associated with an enhanced GLP-1 and GLP-2 secretion and improved metabolic control in patients with type 2 diabetes after metabolic Roux-en-Y gastric bypass.

Objective: To determine changes in incretins, systemic inflammation, intestinal permeability and microbiome modifications 12 months after metabolic RYGB (mRYGB) in patients with type 2 diabetes (T2D) and their relationship with metabolic improvement. Materials and methods: Prospective single-center non-randomized controlled study, including patients with class II-III obesity and T2D undergoing mRYGB. At baseline and one year after surgery we performed body composition measurements, biochemical analysis, a meal tolerance test (MTT) and lipid test (LT) with determination of the area under the curve (AUC) for insulin, C-peptide, GLP-1, GLP-2, and fasting determinations of succinate, zonulin, IL-6 and study of gut microbiota. Results: Thirteen patients aged 52.6 ± 6.5 years, BMI 39.3 ± 1.4 kg/m2, HbA1c 7.62 ± 1.5% were evaluated. After mRYGB, zonulin decreased and an increase in AUC after MTT was observed for GLP-1 (pre 9371 ± 5973 vs post 15788 ± 8021 pM, P<0.05), GLP-2 (pre 732 ± 182 vs post 1190 ± 447 ng/ml, P<0.001) and C- peptide, as well as after LT. Species belonging to Streptococaceae, Akkermansiacea, Rickenellaceae, Sutterellaceae, Enterobacteriaceae, Oscillospiraceae, Veillonellaceae, Enterobacterales_uc, and Fusobacteriaceae families increased after intervention and correlated positively with AUC of GLP-1 and GLP-2, and negatively with glucose, HbA1c, triglycerides and adiposity markers. Clostridium perfringens and Roseburia sp. 40_7 behaved similarly. In contrast, some species belonging to Lachnospiraceae, Erysipelotricaceae, and Rumnicocaceae families decreased and showed opposite correlations. Higher initial C-peptide was the only predictor for T2D remission, which was achieved in 69% of patients. Conclusions: Patients with obesity and T2D submitted to mRYGB show an enhanced incretin response, a reduced gut permeability and a metabolic improvement, associated with a specific microbiota signature.

Intestinal Bipartition After Failed Sleeve Gastrectomy: a Safe and Simple Alternative Technique in a Challenging Case with Vascular Anomalies.

Sleeve gastrectomy (SG) is the most performed bariatric surgery worldwide but approximately 50% of patients will present insufficient weight loss or weight regain after surgery. In 2004, Santoro et al. described an alternative revisional technique other than DS and RYGBP called intestinal bipartition (IB). It involves a pre-pyloric gastro-ileal and an ileo-ileal anastomosis without exclusion of intestinal segments. Duodenal dissection is not necessary, making it an easier and more reproducible technical alternative to DS. its preliminary reports show good weight control with resolution of obesity related comorbidities. We present our technical suggestions to perform a safe IB in a patient with a failed SG in whom revisional DS or RYGBP were not feasible due to a vascular anomaly.

Experience in biliopancreatic diversion with duodenal switch: Results at 2, 5 and 10 years.

INTRODUCTION: Duodenal switch (DS) is considered one of the most effective techniques to achieve weight loss and reduce comorbidities in patients with morbidly obesity. MATERIAL AND METHODS: Descriptive single-center study. 224 patients were analyzed who underwent direct laparoscopic DS in our center. The objective was to describe the results of weight, resolution of comorbidities, nutritional supplementation and postoperative complications at 2, 5 and 10 years. RESULTS: The mean age of the cohort was 49.3 [23-65] years and the mean weight and BMI were 131.8 [20] kg and 49.8 [5] kg/m2. The excess weight lost percentage at 2, 5 and 10 years was 80.6[15]%, 69.3[18]%, 67.4[18]%, respectively. Complete remission of diabetes was evidenced at 2 and 5 years in 35 (85.4%) and 27 (70.4%) patients. In the immediate postoperative period, the complication rate for Clavien-Dindo ≥ III was 15 patients (6.7%) and mortality at 30 and 90 days was 1 (0.4%) and 2 (0.9%) patients. Revisional surgery was performed in 2 patients (0.9%). 80% of the patients required an extra nutritional supplement up to 10 years after surgery. CONCLUSIONS: Direct DS is a safe and effective technique in patients with a BMI between 45 and 55 kg/m2. Weight loss is maintained with a low rate of revision surgery. It is a metabolically effective technique that entails the need for a close postoperative follow-up to assess nutritional supplementation.

Duodenal Switch vs. Single-Anastomosis Duodenal Switch (SADI-S) for the Treatment of Grade IV Obesity: 5-Year Outcomes of a Multicenter Prospective Cohort Comparative Study.

PURPOSE: The aims were to compare the 5-year outcomes of duodenal switch (DS) and single-anastomosis duodenal switch (SADI-S) in terms of weight loss; remission of comorbidities; nutritional status short- and long-term complications; postoperative mortality; and need for revisional surgery. MATERIALS AND METHODS: Multicenter prospective observational study of all consecutive patients undergoing DS or SADI-S in three high-volume hospitals. RESULTS: A total of 87 patients were included in the study, 43 submitted to DS and 44 to SADI-S, with similar basal characteristics, nutritional parameters, and BMI (52.9 kg/m2 DS vs. 52.5 kg/m2 SADI-S). Operative time was 152 min (± 32.6) in DS vs. 116 min (± 21.9) in SADI-S (p = 0.043). Short-term complications were similar for DS and SADI-S, both overall (11.8% vs. 11.6%), and ranged as Clavien-Dindo > II (4.5% vs. 4.7%), with no mortality. At 5 years, DS and SADI-S results were as follows: BMI 30.6 vs. 33.3 kg/m2 (p = 0.023); %EWL 80.5% vs. 68.6% (p = 0.006); and %TWL 42.1 vs. 36.0 (p = 0.006). Comorbidity remission rates for DS and SADI-S were as follows: for diabetes, 92.8% vs. 85.7% (n.s.); for hypertension, 95.2% vs. 85.1% (n.s.); for sleep apnea, 75% vs. 73.3% (n.s.); and for dyslipidemia, 76.4% vs. 73.3% (n.s.). DS showed lower levels of vitamin B12, iron, vitamin E, and zinc than SADI-S (p = < 0.005). In the long term, there were 4 surgical reinterventions (due to 1 internal hernia in the DS group and 1 internal hernia and 2 biliary refluxes in the SADI-S group) with no cases of persistent diarrhea or malnutrition. CONCLUSION: Both DS and SADI-S allowed good weight control and resolution of comorbidities. DS achieved a greater weight loss compared to SADI-S, at the expense of longer operative time and lower vitamin and mineral levels.

Single- Versus Double-Anastomosis Duodenal Switch: Outcomes Stratified by Preoperative BMI.

PURPOSE: Describe and analyze the safety and weight loss performance of biliopancreatic diversion and duodenal switch (BPD-DS) and single-anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S), verifying any possible superiority according to preoperative BMI. METHODS: Retrospective review of patients who underwent primary SADI-S or BPD-DS in three bariatric centers. Study groups were further stratified according to preoperative BMI (subgroup 1: BMI < 50; subgroup 2: 50 ≤ BMI < 55; subgroup 3: BMI ≥ 55). RESULTS: Four hundred and sixty patients underwent BPD-DS (n = 220) or SADI-S (n = 240). The mean LOS was 3.48 ± 3.7 and 3.13 ± 2.3 days for BPD-DS and SADI-S respectively (p = 0.235). The mean operative time was shorter in the SADI-S group (167.25 ± 33.6 vs 140.85 ± 56.7 min) (p < 0.00). The mean %EWL was 44.2, 62.4, and 69.4 for the BPD-DS group and 48.4, 64.5, and 67.1 for the SADI-S group at 6, 12, and 24 months respectively. The mean %TBWL was 25, 35.9, and 40.3 for the BPD-DS group, and 26.2, 35, and 36.9 for the SADI-S group at 6, 12, and 24 months respectively. Overall complication rates were comparable between BPD-DS and SADI-S groups (14% vs 18%) (p = 0.219). SADI-S showed greater emergency department visits (17% vs 7%) (p = 0.005); similar readmission rates (6% vs 7%) (p = 0.80); similar reoperation rates (3% vs 7%) (p = 0.102); and similar mortality rate (0.9% vs 0.4%), after BPD-DS and SADI-S respectively. CONCLUSION: BPD-DS achieved greater %TBWL at 2 years, but no superiority was perceived among study subgroups. SADI-S and BPD-DS showed similar overall complication rates.

Direct and two-step single anastomosis duodenal switch (SADI-S): Unicentric comparative analysis of 232 cases.

INTRODUCTION: The "Single Anastomosis Duodeno-Ileal bypass with Sleeve gastrectomy" (SADI-S) is a bariatric surgery conceived to simplify the duodenal switch in order to reduce its postoperative complications. The objective of this study is to assess the safety and efficacy of SADI-S, comparing its results in both direct and two-step procedure. METHODS: Unicentric cohort study that includes patients submitted to SADI-S, both direct or in two-step, between 2014 and 2019. RESULTS: Two hundred thirty-two patients were included, 192 were submitted to direct SADI-S and 40 had previously undergone a sleeve gastrectomy. The severe complications rate (Clavien-Dindo ≥ IIIA) was 7.8%, being hemoperitoneum and duodenal stump leak the most frequent ones. One patient was exitus between the first 90 days after surgery (0.4%). Patients submitted to direct SADI-S had an initial body mass index (BMI) of 49.6 kg/m2 in comparison of 56.2 kg/m2 in the two-step SADI-S (P < .001). The mean excess weight loss (EWL) at two years was higher in direct SADI-S (77.3 vs. 59.3%, P < .05). Rate of comorbidities resolution was 88.5% for diabetes, 73.0% for hypertension, 77.0% for dyslipidemia and 85.7% for sleep apnea, with no differences between both techniques. CONCLUSION: In medium term, SADI-S is a safe and effective technique that offers a satisfactory weight loss and remission of comorbidities. Patients submitted to two-step SADI-S had a higher initial BMI and presented a lower EWL than direct SADI-S.

Experience in biliopancreatic diversion with duodenal switch: results at 2, 5 and 10 years. / Experiencia en la derivación biliopancreática tipo cruce duodenal: resultados a 2, 5 y 10 años.

INTRODUCTION: Duodenal switch (DS) is considered one of the most effective techniques to achieve weight loss and reduce comorbidities in patients with morbidly obesity. MATERIAL AND METHODS: Descriptive single-center study. 224 patients were analyzed who underwent direct laparoscopic DS in our center. The objective was to describe the results of weight, resolution of comorbidities, nutritional supplementation and postoperative complications at 2, 5 and 10 years. RESULTS: The mean age of the cohort was 49.3 [23-65] years and the mean weight and BMI were 131.8 [20]kg and 49.8 [5]kg/m2. The excess weight lost percentage at 2, 5 and 10 years was 80.6[15]%, 69.3[18]%, 67.4[18]%, respectively. Complete remission of diabetes was evidenced at 2 and 5 years in 35 (85.4%) and 27 (70.4%) patients. In the immediate postoperative period, the complication rate for Clavien-Dindo ≥ III was 15 patients (6.7%) and mortality at 30 and 90 days was 1 (0.4%) and 2 (0.9%) patients. Revisional surgery was performed in 2 patients (0.9%). 80% of the patients required an extra nutritional supplement up to 10 years after surgery. CONCLUSIONS: Direct DS is a safe and effective technique in patients with a BMI between 45 and 55 kg/m2. Weight loss is maintained with a low rate of revision surgery. It is a metabolically effective technique that entails the need for a close postoperative follow-up to assess nutritional supplementation.

Risk factors for ileocolic anastomosis dehiscence; a cohort study.

BACKGROUND: Anastomotic leak (AL) after ileocolic anastomosis influences morbidity, mortality, length of hospitalization and costs. This study analyzes risk and protective factors for AL on ileocolic anastomoses. METHODS: We retrospectively analyzed our single institution patients' series undergoing elective ileocolic anastomosis for AL between 1/2008-12/2017. AL grade A/B (antibiotic treatment and/or radiological drainage) were summarized as mild, grade C (surgical re-intervention) corresponds to severe AL. RESULTS: We included 470 patients (mean age 70.8 years, 43.2% females). Overall AL rate was 9.4% (44 patients) with 6.0% severe and 3.4% mild AL. There was no difference in AL between hand sewn and stapled anastomoses. Multivariate analysis revealed preoperative serum albumin (p = 0.004), smoking habits (p = 0.005) and perioperative blood transfusion (p = 0.038) as risk factors for AL. Suture oversewing as anastomotic reinforcement resulted as independent protective factor (p < 0.001). CONCLUSION: Poor nutritional status, smoking habits and perioperative blood transfusion are negative factors influencing on AL. Suture oversewing as anastomotic reinforcement associates with significantly less AL.