SAT-119 Effect of Binge Eating Diagnosed Prior to Bariatric Surgery on Weight Loss up to 2 Years after Surgery

Abstract

Screening for binge eating (BE) is a component of the preoperative evaluation for bariatric surgery. As eating behavior affects directly any treatment for obesity and may be related to the response to surgery, the study of binge eating disorder (BED) and loss of control has been gaining more attention in recent years. After bariatric surgery, the acute ingestion of large volumes of food is difficult or impossible. In patients in whom BED is the most important factor for weight gain, this restriction could be a determinant feature of the success of the surgical treatment. However, there is no clear understanding of how BE courses over longer periods of time, and if (and how) it changes during the post-operative period. In this way, we aimed to evaluate the effect of BE presenting pre-bariatric surgery on weight loss up to 2 years after surgery. This is a prospective observational study involving 106 Brazilian patients submitted to Roux-en-Y gastric bypass (between March 2010 and December 2014) in a University hospital. In the preoperative period, patients were clinically and nutritionally (anthropometry and food records) evaluated. For the screening of BED, a Portuguese, validated version of the Binge Eating Scale was administered. Follow-up weight loss was obtained (3, 6, 12, 24 months) from the patients’ electronic medical records. The percentage of excess weight loss (%EWL) was examined by pairwise comparison of estimated marginal means (P < 0.050). Of the patients, 40.6% were classified as having BE at baseline. The mean BMI was 48.21 (S.D. 7.25) kg/m². Weight loss was significant between follow-up times, with the exception of the period between 12 and 24 months. Patients with BED had a more marked %EWL at 24 months post-operatively than did patients without BE (76.8 +/- 3.0% vs. 67.3 +/- 2.5%, p = 0.030). For patients being referred for Roux-en-Y bypass, the presence of BED at baseline may indicate higher weight loss at 24 months.