A importância do anel de silicone na derivação gástrica em Y-de-ROUX para o tratamento da obesidade

BACKGROUND: The aim of the study is to state if the ring used in the Roux-en-Y gastric bypass is related to the weight loss after surgery. METHODS: The study has a 5 years follow up. After endoscopic examination the patientes were divided in two groups: internal diameter of the ring till 10mm (184 patients) and other group with internal diameter of the ring more than 10 mm (107 patients).The excess of weight loss were measured one, two and five years after surgery and compared one with each other. RESULTS: The excess of weight loss was higher for those patients with tighter ring. Statistc analysis was significant comparing the two groups one, two and five years after surgery, the excess of weight loss was higher in the tighter ring groups for each time after surgery. There were no difference related to sex, age and BMI. CONCLUSION: The restriction determined by ring increases the excess of weight loss in patients submitted to Roux-en-Y gastric bypass.