Supplementary Material for: Sodium-glucose co-transporter-2 inhibitors use in patients with reduced kidney function hospitalized for fluid overload and heart failure: an observational study

Introduction: Sodium-glucose co-transporter-2 inhibitors (SGLT2i) is recommended in kidney disease and heart failure to reduce adverse clinical outcomes, but utilization can vary. To understand potential gaps in clinical practice and identify opportunities for improvement, we aimed to describe the prevalence and factors associated with SGLT2i prescription in patients with reduced kidney function hospitalized for fluid overload and/or heart failure. Methods: Single-center observational study of patients with reduced kidney function (eGFR 20-59 ml/min/1.73 m2) hospitalized for fluid overload or heart failure between January 2022 and December 2023. Data was retrieved from electronic medical records. The outcome was SGLT2i prescription at discharge. Potential variables affecting SGLT2i prescription were identified during stakeholder engagement and evaluated using multivariable logistic regression. Results: Among 2543 patients, the median age was 79 (71, 86) years and admission eGFR was 38.7 (28.4, 49.4) ml/min/1.73 m2. SGLT2i was prescribed to 630 (24.8%) patients at discharge. SGLT2i prescription at discharge was independently associated with cardiovascular disease (OR 1.76, 95% CI 1.31-2.35), diabetes (OR 1.59, 95% CI: 1.19-2.14), fluid overload or heart failure as the primary discharge diagnosis (OR 1.71, 95% CI: 1.29-2.28), SGLT2i pre-hospitalization (OR 104.91, 95% CI: 63.22-174.08), RAS blocker (OR 2.1, 95% CI: 1.65-2.89) and higher eGFR (OR 1.01, 95% CI: 1.003-1.02) at discharge; but inversely associated with older age (OR 0.97, 95% CI 0.96-0.98). Conclusion: SGLT2i prescription at discharge was suboptimal among patients with reduced kidney function hospitalized for fluid overload and/or heart failure, especially in older age and more severe kidney disease. Additionally, cardiovascular disease, diabetes, primary discharge diagnosis of fluid overload or heart failure, prior SGLT2i use and concurrent RAS blocker at discharge were independently associated with SGLT2i prescription at discharge. Interventions are needed to increase clinicians’ knowledge and overcome clinical inertia to increase SGLT2i use in patients with fluid overload and heart failure.