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Updated: May 24, 2026

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A Protocol for Roux-en-Y Gastric Bypass in Rats using Linear Staplers
Published on: August 21, 2021
Robotic-assisted Roux-en-Y gastric bypass: update from 2 high-volume centers
Ken Tieu1, Nathan Allison, Brad Snyder
1Department of General Surgery, University of Texas Medical School-Houston, Houston, Texas 77030, USA.
Summary
Robotic-assisted Roux-en-Y gastric bypass (RARYGB) is a safe and effective bariatric surgery. This study shows RARYGB has very low complication rates, including minimal anastomotic leaks.
Area of Science:
- Bariatric Surgery
- Minimally Invasive Surgery
- Robotic Surgery
Background:
- Laparoscopic Roux-en-Y gastric bypass (RYGB) is a complex bariatric procedure.
- Robotic surgery enhances minimally invasive surgical capabilities.
- The adoption of robotic gastric bypass assumes reduced complication rates.
Purpose of the Study:
- To review the outcomes of robotic-assisted RYGB (RARYGB).
- To assess the effectiveness, morbidity, and mortality of RARYGB.
- To analyze data from two high-volume centers (university and private practice).
Main Methods:
- Retrospective review of RARYGB procedures from 2002 to 2010.
- Analysis of a large series of RARYGB cases to determine outcomes.
- Recording of endpoints including operative time, conversions, and complications.
Main Results:
- 1100 RARYGB procedures were analyzed.
- Mean patient BMI was 47.9 kg/m(2) preoperatively, decreasing to 39.8 kg/m(2) at 3 months postoperatively.
- Low complication rates were observed: 0.19% pulmonary embolism, 0.27% deep venous thrombosis, 0.09% anastomotic leak, and 0.82% staple line bleeding. No mortality occurred.
Conclusions:
- Robotic-assisted RYGB is a safe and effective bariatric procedure.
- While operative time may increase, complication rates, particularly anastomotic leaks, are significantly reduced.
- RARYGB offers a favorable safety profile for weight loss surgery.

