National trends in using revisional surgeries post-sleeve gastrectomy due to reflux and weight recurrence: a matched case-control analysis

Several options exist for surgical conversion after sleeve gastrectomy (SG), but a definitive safety profile for each option by indication for conversion remains unclear. To determine and compare 30-day risk profiles of SG conversion to Roux-en-Y gastric bypass (RYGB), biliopancreatic diversion with duodenal switch (BPD-DS), and single-anastomosis duodenoileostomy (SADI). Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program national database entries from 2020 to 2022 were used to identify 25,760 adult patients who underwent SG conversion to RYGB, BPD-DS, or SADI. Subgroup analyses were performed among 6106 conversions completed for weight-related complications (RYGB: 3053 patients; BPD-DS: 1826 patients; SADI: 1227 patients). Multivariable analysis and 1:1 nearest-neighbor matching were used to further characterize the 30-day risk profile of each conversion. Patients with RYGB conversions had a lower preoperative body mass index compared with those with BPD-DS + SADI conversions (39.8 versus 46.1, P < .001) and significantly lower rates of medical comorbidities. The distribution of conversion indication for each MBS configuration varied, where most RYGB conversions were for reflux (56.1%) whereas most BPD-DS + SADI conversions were for weight-related complications (87.3%; P < .001). On 1:1 matched analysis of conversions for weight recurrence, odds of 30-day complications (odds ratio .73, P = .019) and readmission (odds ratio .77, P = .031) were lower in BPD-DS + SADI conversions compared with RYGB. There were no significant differences in odds of 30-day reintervention or reoperation between conversion to RYGB and BPD-DS + SADI. Major differing drivers of complications between conversion types included hemorrhage (RYGB 1.98% versus BPD-DS + SADI .87%; P = .001). For weight recurrence after SG, conversion to BPD-DS + SADI does not have greater 30-day complications than RYGB and may be a safe conversion option.