The efficacy of Glucagon-Like Peptide-1 Receptor Agonists (GLP1RA) for the treatment of obesity has led to considerably increased demand for these medications. GLP1RA use prior to bariatric surgery may represent a novel approach to treating obesity. The objectives of this study were to (1) describe trends in pre-bariatric GLP1RA use, (2) investigate social and clinical factors associated with their use, and (3) evaluate differences in clinical outcomesbased on preoperative GLP1RA use. Patients who underwent bariatric surgery at three Indiana hospitals from 2018 to 2023were identified. Patients who utilized GLP1RA in the year preceding surgery werecompared to those who did not. Social factors included insurance, income, andunemployment. Outcomes included rates of GLP1RA use, 30-day postoperativereadmissions, ED visits, and percent total weight lost (%TWL) at 1 year. Associationsbetween preoperative GLP1RA use and outcomes of interest were evaluated usingmultivariable logistic and linear regressions. Of 2169 patients who underwent surgery, 293 (13.5%) utilized GLP1RA preoperatively.The rate of GLP1RA utilization increased threefold from 2018 to 2023. Males were morelikely to receive preoperative GLP1RA (20.1% vs, 12.2%, p<0.001). There were nosignificant differences in social determinants of health or 30-day postoperative outcomesbetween patients who did and did not use GLP1RA preoperatively. Similarly, there wereno significant differences in %TWL at 1 year postoperatively between groups (median25.5% vs. 27.3%, coefficient, -0.78, 95%CI, -2.26 to 0.70). Utilization of GLP1RA in the year prior to bariatric surgery has increased threefold.Preoperative GLP1RA use is not associated with worse 30-day outcomes or differencesin %TWL at 1 year postoperatively. Further work is needed to evaluate whether GLP1RAdosing and duration of treatment impact postoperative outcomes.
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