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Updated: Apr 21, 2026
A Protocol for Roux-en-Y Gastric Bypass in Rats using Linear Staplers
Published on: August 21, 2021
Technique evolution, learning curve, and outcomes of 200 robot-assisted gastric bypass procedures: a 5-year
Vivek Bindal1, Raquel Gonzalez-Heredia, Mario Masrur
1Division of General, Minimally Invasive & Robotic Surgery, University of Illinois at Chicago, 840 S Wood St, Suite 435E, M/C 958, Chicago, IL, 60612, USA, bindal.vivek@gmail.com.
Background:
We evaluate our 5-year experience, evolution of technique, and clinical outcomes with robot-assisted RYGB.
Methods:
Two hundred consecutive patients who underwent robot-assisted RYGB at our center were included. Among them, 118 patients underwent a hybrid robot-assisted laparoscopic RYGB (LRRYGB), and 82 patients underwent a totally robotic RYGB (TRRYGB). Patient demographics, clinical characteristics, comorbidities, operative parameters, conversions, morbidity, mortality, and excess weight loss were analyzed.
Results:
Most of the patients (88 %) were female with a mean age of 41.9 years and mean BMI of 46.6 kg/m(2). The outcomes of patients who underwent LRRYGB (n = 118) were compared to those who underwent TRRYGB (n = 82). The mean operative time in TRRYGB group was 170.9 ± 51.4 min which was significantly lower than LRRYGB group (216 ± 54.1 min). The mean operative time for the last 100 patients was significantly lower than that for the first 100 patients. The excess weight loss (EWL) was 58.3 % at 6 months, 67.7 % at 1 year, 71.6 % at 2 years, and 65 % at 3 years. There were three conversions to open, three reoperations and four readmissions. There were no anastomotic leak, major bleed, gastrojejunostomy stricture, or mortality seen in our series.
Conclusions:
Use of robot assistance to perform RYGB is safe and may reduce the associated complications, namely, anastomotic leak, gastrojejunostomy (GJ) stricture, and hemorrhage. Excess weight loss at 2 years after RRYGB is comparable to laparoscopic RYGB.
