Department of Surgery, Santa Casa of São Paulo Medical School, Rua Cesário Mota Jr, 61, São Paulo, SP, CEP 02112-020, Brazil.
Department of Surgery, Santa Casa of Belo Horizonte, Av. Francisco Sales, 1111 - Santa Efigênia, Belo Horizonte, MG, CEP 30150-221, Brazil.
Obes Surg. 2019 Feb;29(2):560-568. doi: 10.1007/s11695-018-3561-9.
Gastric emptying (GE) and food tolerance (FT) can be altered after Roux-en-Y gastric bypass (RYGB) has been performed, especially when it involved the use of a restrictive mechanism (such as a silastic ring).
To assess GE and FT in patients who underwent banded (BRYGB) or non-banded Roux-en-Y gastric bypass (RYGB).
Forty-seven BRYGB patients and 47 RYGB patients underwent gastric emptying scintigraphy (GES) and FT assessment (by means of a questionnaire) between 6 months and 2 years postoperatively.
GES was performed on average 11.7 ± 5.0 months (6 to 24) postoperatively. T½ medians (time taken for the gastric radioactivity to decrease to half of the original value in the gastric pouch) in the RYGB and BRYGB groups were 48.7 min (40.6-183.0 min) and 56.3 min (41.1-390.9 min), respectively (p = 0.031). The median of total questionnaire scores was 24 points (18-27) in the RYGB group and 20 points (13-27) in the BRYBG group (p < 0.001).
The band (silastic ring) delays GE time and does not affect patient satisfaction or food tolerance to vegetables, bread, or rice, but does affect tolerance to the intake of meat, salad, and pasta. The best tolerated foods are vegetables, salad, and fish. Banded patients are more likely to regurgitate and vomit. Gastric emptying does not affect FT.
胃排空（GE）和食物耐受性（FT）在 Roux-en-Y 胃旁路（RYGB）手术后可能会发生变化，尤其是在使用限制机制（如硅酮环）时。
评估带（BRYGB）或无带 Roux-en-Y 胃旁路（RYGB）手术后患者的 GE 和 FT。
47 例 BRYGB 患者和 47 例 RYGB 患者在术后 6 至 24 个月期间接受胃排空闪烁显像（GES）和 FT 评估（通过问卷调查）。
GES 平均在术后 11.7 ± 5.0 个月（6 至 24 个月）进行。RYGB 和 BRYGB 组的 T½中位数（胃放射性活性降低到胃袋中原始值的一半所需的时间）分别为 48.7 分钟（40.6-183.0 分钟）和 56.3 分钟（41.1-390.9 分钟）（p=0.031）。RYGB 组问卷总评分中位数为 24 分（18-27），BRYBG 组为 20 分（13-27）（p<0.001）。
带（硅酮环）延迟 GE 时间，但不影响患者对蔬菜、面包或米饭的满意度或食物耐受性，但会影响对肉类、沙拉和意大利面的摄入耐受性。最耐受的食物是蔬菜、沙拉和鱼。带患者更有可能反流和呕吐。胃排空不影响 FT。
