Minigastric bypass compared with Roux-en-Y gastric bypass after failed vertical banding gastroplasty: a retrospective cohort of 100 patients

Introduction
Bariatric surgeries are currently the only effective treatment for morbid obesity and its associated comorbidities, including type 2 diabetes mellitus, hypertension, and dyslipidemia. Restrictive procedures have an estimated failure rate up to 20%. Roux-en-Y gastric bypass (RYGB) is commonly performed as a revision surgery for failed restrictive procedures. Few studies have compared RYGB with minigastric bypass (MGB) after failed restrictive procedure, especially vertical banding gastroplasty (VBG).
Patients and methods
A total of 100 patients underwent revisional bariatric surgery, either MGB or RYGB, after failed VBG at a bariatric surgery unit. Ain Shams University Hospitals was done. Patients with morbid obesity after failed VBG were included in the study, and patient with any contraindication to surgery or surgeries converted to open were excluded from the study. Patients were followed up for 1 year after the surgery.
Results
A total of 100 patients (50 MGB and 50 RYGB) were included in our study. The mean age was 36.7±4.1 years in MGB and 28±4.8 years in RYGB. Although preoperative BMI was significantly lower in MGB group (43.±2.4, =0.001), 1-year postoperative BMI was significantly lower in RYGB group (27.7±2.06, =0.001). MGB took significantly less operative time (125±2.4) compared with RYGB (145.6±2.6 min). No significant difference in hospital stay between two groups was detected.
Conclusion
Our study showed that both procedures significantly reduced BMI, with greater efficacy in RYGB. MGB is simpler and has less operative time.