Magnetic single‐anastomosis side‐to‐side duodeno‐ileostomy for revision of sleeve gastrectomy in adults with severe obesity: 1‐year outcomes

Abstract

IntroductionUncomplicated surgical approaches that minimize anastomotic complications while improving revisional metabolic/bariatric surgical (MBS) outcomes are needed.MethodsThis prospective single‐center study assessed the feasibility, safety, and efficacy of the novel linear magnetic anastomosis system (LMAS [3 cm]) in performing a side‐to‐side duodeno‐ileostomy (MagDI) bipartition to revise clinically suboptimal primary sleeve gastrectomy (SG). Patients with severe obesity with/without type 2 diabetes (T2D) with suboptimal weight loss, regain, and/or T2D recurrence post SG underwent revisional MagDI. A distal and proximal magnet were delivered endoscopically to the ileum and duodenum and aligned via laparoscopic assistance. Gradual magnet fusion formed a DI bipartition. Primary endpoints: technical feasibility, safety (Clavien‐Dindo [CD] severe adverse event classification) at 1 year. Secondary endpoints: MBS weight and T2D reduction.ResultsJuly 29, 2022–March 28, 2023, 24 patients (95.8% female, mean age 44.9 ± 1.5 years, and body mass index [BMI] 39.4 ± 1.3 kg/m2) underwent MagDI. Feasibility was attained via correct magnet placement (mean operative time 63.5 ± 3.3 min), patent anastomoses created, and magnet passage per anus in 100.0% of patients. There were 4 CD‐III mild or moderate severe AEs, 0.0% associated with the LMAS or MagDI: 0.0% anastomotic leakage, obstruction, bleeding, infection, reintervention, or death. Mean BMI reduction was 2.1 kg/m2 (p < 0.05); total weight loss 5.3%, excess weight loss 16.4%; and the patient with T2D improved.ConclusionThe single‐anastomosis MagDI procedure using the novel 3‐cm LMAS to revise clinically suboptimal SG was technically straightforward, incurred no major complications, mitigated weight regain, and renewed clinically meaningful weight loss.Clinicaltrials.gov IdentifierNCT05322122.