Abstract
Background: Sodium−glucose cotransporter 2 inhibitors have been shown to reduce hospitalisations for acute decompensated heart failure in patients with and without type 2 diabetes. However, there is little evidence on their use in hospitalised patients. This work aims to analyse the glycaemic and clinical efficacy and safety of empagliflozin continuation in patients with type 2 diabetes hospitalised for acute decompensated heart failure.Methods: This real-world study included non-critically ill patients with diabetes hospitalised for acute decompensated heart failure and treated with empagliflozin for at least three months prior to the hospitalisation between 2017 and 2020. According to our in-hospital antihyperglycaemic protocol, patients could be treated with two possible regimens: a basal-bolus insulin regimen and an empagliflozin-basal insulin regimen. Our primary endpoints were difference in glycaemic control, as measured via mean daily blood glucose level, and differences in the visual analogue scale dyspnoea score, NT-proBNP levels, diuretic response, and cumulative urine output. Safety endpoints were also analysed. A propensity matching analysis was used to match a patient on one regimen with a patient on the other regimen. The probability of starting the regimes was estimated with a logistic regression model including variables that could have affected treatment assignment or outcomes as independent variablesResults: After a propensity matching analysis, 91 patients were included in each group. There were no differences in mean blood glucose levels (152.1 ± 17.8 vs 155.2 ± 19.7 mg/dl, p=0.289). At discharge, NT-proBNP levels were lower and cumulative urine output greater in the empagliflozin group versus the basal-bolus insulin group (1,652 ± 501 vs 2,101 ± 522 pg/mL, p=0.032 and 16,100 ± 1,510 vs 13,900 ± 1,220 ml, p=0.037, respectively). Patients who continued empagliflozin had a lower total number of hypoglycaemic episodes (36 vs 64, p<0.001). No differences were observed in adverse events, length of hospital stay, or in-hospital deaths.Conclusions: For patients with acute heart failure, an in-hospital antihyperglycaemic regimen that includes continuation of empagliflozin achieved effective glycaemic control, lower NT-proBNP, and greater urine output. It was also safer, as it reduced hypoglycaemic episodes without increasing other safety endpoints.