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. 2024 Jun;34(6):2227-2236.
doi: 10.1007/s11695-024-07237-x. Epub 2024 Apr 23.

Impact of Gastrojejunostomy Anastomosis Diameter on Weight Loss Following Laparoscopic Gastric Bypass: A Systematic Review

Othman S Al-Fagih  1 , Sharukh Zuberi  2 , Osamah Niaz  2 , Periyathambi Jambulingam  2 , Douglas Whitelaw  2 , Farhan Rashid  2 , Md Tanveer Adil  2 , Vigyan Jain  2 , Omer Al-Taan  2 , Aruna Munasinghe  2 , Alan Askari  2   3 , Fahad M Iqbal  3
Affiliations

Impact of Gastrojejunostomy Anastomosis Diameter on Weight Loss Following Laparoscopic Gastric Bypass: A Systematic Review

Othman S Al-Fagih et al. Obes Surg. 2024 Jun.

Abstract

Laparoscopic Roux-en-Y gastric bypass (RYGB) is crucial for significant weight reduction and treating obesity-related issues. However, the impact of gastrojejunostomy (GJ) anastomosis diameter on weight loss remains unclear. We investigate this influence on post-RYGB weight loss outcomes. A systematic search was conducted. Six studies met the inclusion criteria, showing varied GJ diameters and follow-up durations (1-5 years). Smaller GJ diameters generally correlated with greater short-to-medium-term weight loss, with a threshold beyond which complications like stenosis increased. Studies had moderate-to-low bias risk, emphasizing the need for precise GJ area quantification post-operation. This review highlights a negative association between smaller GJ diameters and post-RYGB weight loss, advocating for standardized measurement techniques. Future research should explore intra-operative and AI-driven methods for optimizing GJ diameter determination.

Keywords: Bariatric surgery; GJ diameter; Gastroenterostomy diameter; Gastrojejunostomy diameter; Laparoscopic Roux-en-Y gastric bypass (RYGB); Outcomes; Stenosis; Weight loss.

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