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. 2023 Mar 1;18(1):8-12.
doi: 10.1089/bari.2021.0117. Epub 2023 Mar 17.

Preoperative Weight Loss as a Predictor of Short and Midterm Postoperative Weight Loss in Patients Undergoing Bariatric Surgery

Benjamin L Reed  1 , David G Jackson  1 , Christa Lilly  2 , Salim Abunnaja  1 , Lawrence E Tabone  1 , Nova L Szoka  1
Affiliations

Preoperative Weight Loss as a Predictor of Short and Midterm Postoperative Weight Loss in Patients Undergoing Bariatric Surgery

Benjamin L Reed et al. Bariatr Surg Pract Patient Care. .

Abstract

Objective: To examine if preoperative weight loss correlates to postoperative weight loss 2 and 3 years after surgery.

Methods: A review was conducted of bariatric surgery patients who underwent either gastric bypass or sleeve gastrectomy during 2015-2018 and had 3-year follow-up data. Demographic and outcome data were collected. A best-fit regression model for weight loss was constructed.

Results: Eight hundred fifty-nine patients underwent surgery during the selected period, of which 199 patients (23%) were analyzed. Eighty-two percent of patients had gastric bypass and 82% were female. Preoperative percent excess weight loss (%EWL) was not significantly associated with 2- and 3-year postoperative %EWL (p = 0.18). Patients demonstrated significant weight regain at 3 years postoperatively versus 1 year (p < 0.01). Higher preoperative weight loss was associated with lower %EWL 3 years postoperatively versus 1 year (p = 0.04). Postoperative %EWL had a significant negative association with higher preoperative weight, diabetes, baseline use of a mobility device, and sleeve gastrectomy.

Conclusions: In a cohort of bariatric surgery patients, there was no statistically significant association between preoperative and midterm postoperative %EWL. Postoperative %EWL was negatively associated with several patient-specific factors and increasing time since operation.

Keywords: bariatric surgery; gastric bypass; insurance; sleeve gastrectomy; weight loss.

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Conflict of interest statement

N.L.S.: Founder Endolumik, Consultant CSATS, Consultant CMR Surgical, Industry Sponsored Research DigbiHealth. No other authors have pertinent financial disclosures.

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