Comparative analysis of the single-anastomosis duodenal-ileal bypass with sleeve gastrectomy (SADI-S) to established bariatric procedures: an assessment of 2-year postoperative data illustrating weight loss, type 2 diabetes, and nutritional status in a single US center.

BACKGROUND: The sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and single-anastomosis duodenal-ileal bypass with SG (SADI-S) are recognized bariatric procedures. A comparison has never been made between these 3 procedures and especially in different body mass index (BMI) categories. OBJECTIVE: The study aimed to analyze a large cohort of patients undergoing either laparoscopic (L) SG, LRYGB, or LSADI-S to evaluate and compare weight loss and glycosylated hemoglobin level. The secondary aim was to compare the nutritional outcomes between LRYGB and LSADI-S. SETTING: Private practice, United States. METHODS: This is a retrospective review of 878 patients who underwent LSG, LRYGB, or LSADI-S from April 2014 through October 2015 by 5 surgeons in a single institution. For weight loss analysis, the patients were categorized into 4 different categories as follows: patients regardless of their preoperative BMI, patients with preoperative BMI <45 kg/m2, patients with preoperative BMI 45 to 55 kg/m2, and patients with preoperative BMI >55 kg/m2. RESULTS: A total of 878 patients were identified for analysis. Of 878 patients, 448 patients, 270 patients, and 160 patients underwent LSG, LRYGB, and LSADI-S, respectively. Overall, at 12 and 24 months, the weight loss was highest with LSADI-S, followed by LRYGB and LSG in all 4 categories. At 2 years, the patients lost 19.5, 16.1, and 11.3 BMI points after LSADI-S, LRYGB, and LSG, respectively. In addition, the weight loss was highest in patients with preoperative BMI <45 kg/m2 and lowest in patients with preoperative BMI >55 kg/m2 at 12 and 24 months. Also, there were no statistically significant differences between the nutritional outcomes between LRYGB and LSADI-S. The LSADI-S had significantly lower rates of abnormal glycosylated hemoglobin than LRYGB and LSG at 12 months (P < .001). CONCLUSIONS: The weight loss outcomes and glycosylated hemoglobin rates were better with LSADI-S than LRYGB or LSG. The nutritional outcomes between LRYGB and LSADI-S were similar.

The incidence of complications associated with loop duodeno-ileostomy after single-anastomosis duodenal switch procedures among 1328 patients: a multicenter experience.

BACKGROUND: The single-anastomosis duodenal switch procedure is a type of duodenal switch that involves a loop anastomosis rather than traditional Roux-en-Y reconstruction. To date, there have been no multicenter studies looking at the complications associated with post-pyloric loop reconstruction. OBJECTIVES: The aim of the study was to report the incidence of complications associated with loop duodeno-ileostomy (DI) following single-anastomosis duodenal switch (SADS) procedures. SETTING: Mixed of private and teaching facilities. METHODS: The medical records of 1328 patients who underwent primary SADS procedure (single-anastomosis duodeno-ileal bypass with sleeve gastrectomy or stomach intestinal pylorus-sparing surgery) by 17 surgeons from 3 countries (United States, Spain, and Australia) at 9 centers over a 6-year period were retrospectively reviewed, and their results were compared with articles in the literature. RESULTS: Mean preoperative body mass index was 51.6 kg/m2. Of 1328 patients, 123 patients received a linear stapled duodeno-ileostomy (DI) and 1205 patients a hand-sewn DI. In the overall series, the anastomotic leak, ulcer, and bile reflux occurred in .6% (9/1328), .1% (2/1328), and .1% (2/1328), respectively. None of our patients experienced volvulus at the DI or an internal hernia. Overall, 5 patients (.3%) (3/123 [2.4%] with linear stapled DI versus 2/1205 [.1%] with hand-sewn DI [P<.05]) experienced stricture at the DI in this series. CONCLUSIONS: The overall incidence of complications associated with loop DI was lower than the reported incidence of anastomotic complications after Roux-en-Y gastric bypass and biliopancreatic diversion with duodenal switch. SADS procedures may cause much fewer anastomotic complications compared with Roux-en-Y gastric bypass and biliopancreatic diversion with duodenal switch.