Predictive Factors for Roux Stasis Syndrome

We defined RSS as (1) the presence of symptoms such as nausea, vomiting, or abdominal fullness, (2) refasting after liquid or semi-liquid diets, (3) imaging methods (X-ray, CT, upper gastroenterography) confirmed without mechanical obstruction. All three conditions must be met at the same time and should occur within 30 days after operation.