Investigating the Results of One Anastomosis Gastric Bypass After Primary Metabolic and Bariatric Restrictive Procedures

Jan 8, 2025Obesity surgery

Outcomes of One Anastomosis Gastric Bypass After Initial Weight-Loss Surgeries That Limit Stomach Size

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Abstract

A total weight loss percent (%TWL) of 27.03 ± 9.12 was observed after revisional one anastomosis gastric bypass (OAGB) over 12 months.

The study included 151 patients who had insufficient weight loss or weight regain after primary restrictive surgeries.
Weight loss percent after OAGB at 12, 24, 60, and 84 months was 27.03 ± 9.12, 27.74 ± 10.05, 24.62 ± 9.87, and 24.34 ± 8.05, respectively.
After 24 months, type 2 diabetes resolved in 55.55% of patients, hypertension in 50%, dyslipidemia in 77%, and obstructive sleep apnea in 100%.
Weight loss outcomes after 60 months showed no significant differences between gastric plication and adjustable gastric banding groups.
No serious complications were reported in either short- or long-term follow-up after the revisional OAGB.

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BACKGROUND: Previous studies showed a high conversion rate and failure of restrictive procedures, including sleeve gastrectomy (SG), adjustable gastric banding (AGB), gastric plication (GP), and vertical banded gastroplasty (VBG) in a long-term follow-up. The current study aims to evaluate the efficacy and safety of a revisional one anastomosis gastric bypass (OAGB) for weight loss and treatment of obesity-related problems after primary metabolic and bariatric restrictive procedures.

METHODS: A retrospective study on prospectively collected data was conducted on a sample of 151 patients who experienced insufficient weight loss or weight regain after primary restrictive surgeries and underwent OAGB as a revisional procedure.

RESULTS: A total of 151 patients with a history of previous restrictive metabolic and bariatric surgery who underwent a revisional OAGB were included in this study. The restrictive procedures consisted of SG (n = 79), AGB (n = 45), GP (n = 15), and VBG (n = 12). Total weight loss percent (%TWL) after the revisional OAGB was 27.03 ± 9.12, 27.74 ± 10.05, 24.62 ± 9.87, and 24.34 ± 8.05 after 12, 24, 60, and 84 months, respectively. After 24 months of follow-up, TWL was significantly higher in the GP group compared to the AGB group. However, weight loss outcomes were not significantly different after 60 months of follow-up. The revisional OAGB was associated with a significant resolution of obesity-related problems, including type 2 diabetes (55.55%), hypertension (50%), dyslipidemia (77%), and obstructive sleep apnea (100%) after 2 years of follow-up. There was no serious complication after the revisional OAGB in the short- and long-term follow-up.

CONCLUSION: OAGB is an efficient and safe option as a conversion surgery after restrictive procedures.

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Investigating the Results of One Anastomosis Gastric Bypass After Primary Metabolic and Bariatric Restrictive Procedures

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