ArticleObesity surgery2026
Linear versus Circular Stapled Gastrojejunostomy in Minimally Invasive Roux-en-Y Gastric Bypass: A Nationwide Swiss Administrative Database Study (2015-2022).
Article in Obesity surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07483957 (Linear vs. Circular Stapled Gastrojejunal Anastomosis in Bariatric Laparoscopic Gastric Bypass Surgery in Switzerland), which is not on this map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Linear vs. Circular Stapled Gastrojejunal Anastomosis in Bariatric Laparoscopic Gastric Bypass Surgery in Switzerland: A Retrospective National Registry Study From 2015 to 2022.
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8 authors.
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Abstract
backgroundThe impact of stapling technique on early postoperative outcomes after minimally invasive Roux-en-Y gastric bypass (RYGB) remains incompletely understood. This study compared short-term postoperative outcomes following linear versus circular gastrojejunostomy.
methodsThis nationwide administrative database study included RYGB cases in Switzerland between 2015 and 2022. The primary endpoint was major in-hospital postoperative complication (composite of diagnoses and reoperation). Secondary endpoints included individual complications, length of hospital stay (LOS), and temporal trends in stapling technique. Associations were assessed using generalised additive regression models and propensity score matching (PSM).
resultsAmong 21,320 RYGB cases, 18,161 (85.2%) underwent linear and 3,159 (14.8%) circular gastrojejunostomy. Circular stapling was not associated with major complication in multivariable analysis (OR = 1.221, 95% CI 0.824-1.809), whereas higher odds were observed after PSM (OR = 2.464, 95% CI 1.225-4.956). Circular stapling was associated with both surgical site infection (SSI) and LOS exceeding the 50th percentile in both multivariable (SSI: OR = 2.251, 95% CI 1.331-3.809; LOS: RR = 1.136, 95% CI 1.047-1.232) and PSM analyses (SSI: OR = 7.647, 95% CI 2.885-20.271; LOS: RR = 1.318, 95% CI 1.218-1.426). For LOS exceeding the 90th percentile, an association was observed in multivariable analysis (RR = 1.209, 95% CI 1.014-1.441), but not after PSM (RR = 1.018, 95% CI 0.604-1.715). Circular stapling decreased overall during the study period (Τ=-0.714, p = 0.013), despite year-to-year variation.
conclusionThe association between circular stapling and major in-hospital postoperative complication differed across analytical approaches. Associations with SSI and prolonged LOS were more consistent. Linear stapling increasingly predominated over time. Registry: ClinicalTrials.gov, TRN: NCT07483957, Registration date: 17 March 2026.
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