To evaluate the surgical success and associated factors in women from two to seven years after Roux-en-Y gastric bypass (RYGB).


Anthropometric and socio-demographic data from 86 women were assessed. Surgical success was defined as the presence of three concomitant parameters: excess weight loss ≥ 50% (%EWL), stable body weight (weight regain (WR) less than 10% from the lowest postsurgical weight) and control of comorbidities (diabetes and dyslipidemia, evaluated by biochemical tests, and hypertension, measured by automatic device).


Only 23% of the sample had surgical success by these parameters. Although 90% of patients showed an optimal %EWL, almost 40% presented obesity-related comorbidities and 58% showed WR. Age and educational level did not influence surgical success (Mann-Whitney U test; p=0.26, for both variables), as well as if the surgery was performed in private or public health system (Chi-square test; p=0.13). The postoperative period was marginally different between success and no success group (Mann-Whitney U test; p=0.09), however there was a positive correlation between months postoperative and WR (r=0.38; p<0.001).


Despite a high frequency of adequate %EWL, the comorbidities and WR may have influenced bariatric surgical success. Age, educational level and surgery in private or public system were not associated with bariatric surgical success. The postoperative time, an important predictor of long-term bariatric surgical success, showed a positive correlation with WR, suggesting the importance of efficient clinical follow-up in the late postoperative period, aiming at the control of body weight.