[Weight regain after bariatric surgery in diabetic patients at a university hospital in Argentina].

Introduction: bariatric surgery has proven to be the most effective treatment for weight reduction. The weight regain is expected in any type of surgery, and within them, the roux en Y gastric by pass (GBP) appears to be the one with the lowest weight increase compared to sleeve gastrectomy (SG).

Materials And Methods: it was an observational retrospective cohort study. 167 patients undergoing bariatric surgery, GBP and SG, were analyzed between 2012 and 2017. Patients older than 18 years with a diagnosis of type 2 diabetes mellitus and obesity were selected. The main variable, weight (kg), was measured longitudinally at 6 months,1 and 5 years.

Results: it was detected that there was weight regain between the first and fifth postoperative year with both techniques used but it was significantly for SG.

Conclusion: both types of surgeries achieved significant weight loss, however the regimen existed and was significant for the SG group.