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Obesity Surgery
Published in: Obesity Surgery 9/2021

01-09-2021 | Obesity | Original Contributions

Weight Regain Outcomes After Bariatric Surgery in the Long-term Follow-up: Role of Preoperative Factors

Authors: Macarena Torrego-Ellacuría, Ana Barabash, Angélica Larrad-Sainz, Gemma Maria Hernández-Nuñez, Pilar Matía-Martín, Natalia Pérez-Ferre, Clara Marcuello, Andrés Sánchez-Pernaute, Antonio José Torres, Alfonso Luis Calle-Pascual, Miguel Angel Rubio

Published in: Obesity Surgery | Issue 9/2021

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Abstract

Purpose

Weight regain (WR) compromises the effectiveness of bariatric surgery. The objective of this study was to determine differences in long-term WR prevalence using different definitions and analyze possible preoperative predictors involved.

Methods

Single-center retrospective cohort study including 445 adults who underwent 3 modalities of bariatric surgery between 2009 and 2014. Exposure: age, gender, ethnicity, body mass index (BMI), type 2 diabetes (T2D), hypertension (HTN), and type of surgery. Main outcomes: WR at year 6 assessed by 4 definitions and 6 multivariate models based on common thresholds.

Results

Our cohort (71.1% female) had a mean age of 44.78 ± 11.94 years, and mean presurgery BMI of 44.94 ± 6.88 kg/m2, with a median follow-up of 6 years (IQR=5–8). The prevalences of T2D and HTN were 36.0% and 46.7% respectively. WR rates over thresholds ranged from 25.4 to 68.1%, with significant differences between groups in the WR measured as the percentage of maximum weight loss (MWL) and the increase in excess weight loss (EWL). Presurgery BMI was a significant predictor in 3 models; restrictive techniques were associated with WR in all the models except for those considering WR over 10 kg and WR over 15% from nadir as dependent variables.

Conclusions

In this long-term study, WR defined as percentage of MWL and increase in EWL from nadir had the greatest significance in logistic regression models with preoperative BMI and type of surgery as independent variables. These findings could serve to establish a standardized outcome reporting WR in other longitudinal studies.

Graphical Abstract

Key Points

• Lack of standardized outcome to measure weight regain after bariatric surgery.
• Lowest rates of weight regain in malabsorptive techniques in all definitions applied.
• Weight regain measured as percentage of maximum weight lost.
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Metadata
Title
Weight Regain Outcomes After Bariatric Surgery in the Long-term Follow-up: Role of Preoperative Factors
Authors
Macarena Torrego-Ellacuría
Ana Barabash
Angélica Larrad-Sainz
Gemma Maria Hernández-Nuñez
Pilar Matía-Martín
Natalia Pérez-Ferre
Clara Marcuello
Andrés Sánchez-Pernaute
Antonio José Torres
Alfonso Luis Calle-Pascual
Miguel Angel Rubio
Publication date
01-09-2021
Publisher
Springer US
Published in
Obesity Surgery / Issue 9/2021
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-021-05497-5

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