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Obesity Surgery
Published in: Obesity Surgery 5/2017

01-05-2017 | Original Contributions

Weight Regain 10 Years After Roux-en-Y Gastric Bypass

Authors: Daniela Vicinansa Monaco-Ferreira, Vânia Aparecida Leandro-Merhi

Published in: Obesity Surgery | Issue 5/2017

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Abstract

Objective

This study aims to investigate weight regain and the associated variables 10 years after Roux-en-Y gastric bypass.

Method

This retrospective study recruited patients submitted to Roux-en-Y gastric bypass (N = 166) for a 10-year follow-up. The following variables were investigated: body mass index (BMI), percentage of excess weight loss (%EWL), weight regain (WR), and percentage of weight regain (%WG). The chi-squared test or Fisher’s exact test compared proportions, and the Mann-Whitney test compared numerical measurements between the groups. Analysis of variance (ANOVA) compared the measurements over time. The significance level was set at 5 %.

Results

The sample had a mean age of 39.59 ± 11.69 years, and females prevailed (71.7 %). In the long-term follow-up, 41 % of the patients had weight regain. Seventy-two months after surgery, excess weight, preoperative BMI, gender, age, nutritional monitoring, and iron deficiency did not explain weight regain. Younger patients had regained significantly more weight 96 (p = 0.008) and 120 months (p = 0.004) after surgery than older patients. Patients who regained weight had ferritin <15 μg/dL 96 months after surgery (p = 0.019).

Conclusion

Patients submitted to Roux-en-Y gastric bypass presented weight regain, which increased over time. Age, iron deficiency, and time since surgery were associated with weight regain in the long-term follow-up.
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Metadata
Title
Weight Regain 10 Years After Roux-en-Y Gastric Bypass
Authors
Daniela Vicinansa Monaco-Ferreira
Vânia Aparecida Leandro-Merhi
Publication date
01-05-2017
Publisher
Springer US
Published in
Obesity Surgery / Issue 5/2017
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-016-2426-3

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