Abstract
Background
Despite the health benefits of bariatric surgery (BS) extend beyond WL, better understanding of the WL response may help improve the outcomes of BS. In this context, we aimed to assess patterns within the variability of weight loss (WL) after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG).
Methods
WL data from 658 subjects that underwent RYGB (n = 464) or SG (n = 194) as first BS were analyzed. Based on excess WL (EWL), subjects were categorized as good WL responders (EWL ≥ 50 % at nadir weight and throughout follow-up), primarily poor WL responders (1-PWL:EWL < 50 % at nadir weight and thereafter), and secondarily poor WL responders (2-PWL:EWL ≥ 50 % at nadir weight, but <50 % at last follow-up visit). Predictors associated with different WL outcomes were ascertained using regression analysis.
Results
Median follow-up was 55.7 months. Nadir EWL ranged 12.4–143.6 %; last follow-up visit EWL ranged −22.1–143.6 % and weight regain (WR) ranged 0–64.1 kg. Good WL was found in 75.7 of the cohort. 1-PWL response (4.7 %) was characterized by lesser WL but similar WR as compared to good WL and was associated with larger BMI and diabetes prior to surgery. 2-PWL response (19.6 %) was characterized by larger WR as compared to the other groups and was more common following SG. Lesser percentage of medical appointments kept was associated with 1-PWL and 2-PWL.
Conclusion
Our data show the high inter-individual variability of the WL response at mid-term after RYGB and SG and that poor WL after BS could be illustrated by two different patterns, characterized either by sustained limited WL (1-PWL), or pronounced weight regain (2-PWL).
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Acknowledgments
This work was supported by a grant from the Residency Fellowship Program from the Hospital Clínic Universitari (Barcelona, Spain).
Authors’ Contributions
A. de H. and J.V. designed the study, analyzed the data, and wrote the manuscript. T.R. and A.J. analyzed the data and reviewed and edited the manuscript. A.L. and L.F. reviewed and edited the manuscript. J.V. is the guarantor of this work and as such, had full access to all the data in the studies, and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Source of Funding
This work was supported by a grant from the Fondo de Investigaciones Sanitarias (PI11/00892), Instituto de Salud Carlos III (Madrid, Spain), and European Funds for Regional Development (FEDER) from the European Union.
Conflict of Interest
The authors have no conflict of interest to report relevant to this article.
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de Hollanda, A., Ruiz, T., Jiménez, A. et al. Patterns of Weight Loss Response Following Gastric Bypass and Sleeve Gastrectomy. OBES SURG 25, 1177–1183 (2015). https://doi.org/10.1007/s11695-014-1512-7
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DOI: https://doi.org/10.1007/s11695-014-1512-7