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. 2022 Sep;32(9):2860-2868.
doi: 10.1007/s11695-022-06176-9. Epub 2022 Jul 5.

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

Ine F L Romaen  1 , Marijn T F Jense  1 , Inge H Palm-Meinders  2 , Evelien de Witte  1   2 , Sofie A F Fransen  1   2 , Jan Willem M Greve  1   2   3 , Evert-Jan G Boerma  4   5
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Higher Preoperative Weight loss Is Associated with Greater Weight Loss up to 12 Months After Bariatric Surgery

Ine F L Romaen et al. Obes Surg. 2022 Sep.

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.

Keywords: Bariatric surgery; Predicting patient factors; Preoperative weight loss; Total weight loss; Weight loss.

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References

    1. Buchwald H, Avidor Y, Braunwald E, et al. Bariatric surgery: a systematic review and meta-analysis. JAMA. 2004;292(14):1724–37. - DOI
    1. Collaboration NRF. Trends in adult body-mass index in 200 countries from 1975 to 2014: a pooled analysis of 1698 population-based measurement studies with 19.2 million participants. Lancet. 2016;387(10026):1377-96.
    1. Livhits M, Mercado C, Yermilov I, et al. Does weight loss immediately before bariatric surgery improve outcomes: a systematic review. Surg Obes Relat Dis. 2009;5(6):713–21. - DOI
    1. Watanabe A, Seki Y, Haruta H, et al. Preoperative weight loss and operative outcome after laparoscopic sleeve gastrectomy. Obes Surg. 2017;27(10):2515–21. - DOI
    1. Giordano S, Victorzon M. The impact of preoperative weight loss before laparoscopic gastric bypass. Obes Surg. 2014;24(5):669–74. - DOI

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