INTRODUCTION:

Obesity is a chronic disease of multifactorial origin, associated with several medical complications, causing a significant decline in the health of individuals. In individuals with BMI≥40kg/m² or BMI≥35kg/m² with at least one comorbidity, bariatric surgery is the treatment of choice and can be performed in restrictive and/or malabsorptive surgeries.

OBJECTIVES:

To carry out a literature review to study short-term and long-term weight gain after bariatric surgery.

METHODOLOGY:

10 articles were selected from the Web Of Science and Pubmed/Medline databases, published between 2015 and 2020, that addressed changes after bariatric surgery. To carry out the systematic review, the PRISMA recommendations were used, and to assess the quality of the articles, the critical evaluation instrument by Crombie.

RESULTS:

In 90% of the articles analyzed, there was a weight loss in the first two years of follow-up, with 40% of the articles also showing a greater decrease in BMI in the first year after bariatric surgery compared to the second, with the mean BMI decrease varied between 9.62kg / m² and 19.8kg / m² in the first year and between 0.13kg / m² and 4,3kg / m² in the second year after bariatric surgery. 30% of the articles with a follow-up period of more than 2 years, included in this review, refer to a new weight increase in individuals after 3 years and 10% after 5 years of bariatric surgery. Of the articles that mention more than one surgical technique (40%), Roux-en-Y Gastric Bypass is related to greater weight loss, followed by Sleeve Gastrectomy / Laparoscopic Sleeve Gastrectomy and with lower results the Adjustable Gastric Band / Laparoscopic Adjustable Gastric Band.

CONCLUSIONS:

Bariatric surgery remains an effective method for treating morbid obesity or grade 2 obesity with at least one short-term comorbidity, requiring strict nutritional monitoring to help achieve better long-term results, as well as in its maintenance.

        · resumo em Português     · texto em Português     · Português ( pdf )