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Higher Preoperative Weight loss Is Associated with Greater Weight Loss up to 12 Months After Bariatric Surgery

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Abstract

Background

Prior research suggested presurgical weight loss is associated with greater total weight loss, resulting in a more effective bariatric intervention. We aimed to assess whether preoperative weight loss is a predictor for total weight loss, and which patient factors are associated with successful weight loss.

Methods

All patients (N = 773) that underwent primary bariatric surgery between June 2017 and August 2019 were included in this single-center retrospective study. Outcome measures were preoperative weight loss (%preopWL) and total weight loss (%TWL) up to 1 year postoperatively. Patients were divided into 4 groups based on quartiles of %preopWL.

Results

Total weight loss after 1, 6, and 12 months for the upper quartile was 16.9%, 33.4%, and 37.8%, and for the lower quartile 11.8%, 28.9%, and 35.2%, respectively (p < 0.001). Seven hundred fourteen patients (92.4%) were available for the 1-year follow-up. Preoperative weight loss was not associated with the incidence of complications. Independent factors predicting increased %preopWL were mandated preoperative weight loss program (MWP) (p < 0.001), older age (p = 0.005), weight measurement in the week before surgery (p = 0.031), and non-diabetic status (p = 0.010). Predictors for superior %TWL were MWP (p = 0.014), younger age (p = 0.001), non-diabetic status (p = 0.005), female gender (p = 0.001), higher Body Mass Index (p = 0.006), and banded gastric bypass (p = 0.001).

Conclusion

Higher preoperative weight loss is associated with persisting greater weight loss up to at least 12 months post-surgery. In order to optimize preoperative weight loss, we recommend extra preoperative support to younger and diabetic patients. We advise nutritional counseling and additional weight measurement in the week before surgery.

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Author information

Author notes

  1. Evelien de Witte & Sofie A.F. Fransen

    Present address: Dutch Obesity Clinic South, 6419 XZ, Heerlen, the Netherlands

Authors and Affiliations

  1. Surgical Department, Zuyderland Medical Center, 6419 PC, Heerlen/Sittard, the Netherlands

    Ine F. L. Romaen, Marijn T. F. Jense, Evelien de Witte, Sofie A.F. Fransen, Jan Willem M. Greve & Evert-Jan G. Boerma

  2. Dutch Obesity Clinic South, 6419 XZ, Heerlen, the Netherlands

    Inge H. Palm-Meinders, Jan Willem M. Greve & Evert-Jan G. Boerma

  3. Research School, NUTRIM University of Maastricht, 6229 ER, Maastricht, the Netherlands

    Jan Willem M. Greve

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  1. Ine F. L. Romaen
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All authors have contributed to this work.

Corresponding author

Correspondence to Evert-Jan G. Boerma.

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For this type of study, formal consent is not required. This study was approved by the Institutional Review Board of the Zuyderland Medical Center.

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Key Points

• Higher preoperative weight loss is associated with greater weight loss.

• Extra preoperative support for younger and diabetic patients is recommended.

• Nutritional counseling and weight measurement in the weeks before surgery is advised.

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Romaen, I.F.L., Jense, M.T.F., Palm-Meinders, I.H. et al. Higher Preoperative Weight loss Is Associated with Greater Weight Loss up to 12 Months After Bariatric Surgery. OBES SURG 32, 2860–2868 (2022). https://doi.org/10.1007/s11695-022-06176-9

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  • DOI: https://doi.org/10.1007/s11695-022-06176-9

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