Abstract
BACKGROUND: The efficacy of dapagliflozin in patients with acute heart failure remains unclear. OBJECTIVE: To investigate the impact of dapagliflozin (DAPA) on loop diuretics use and 90-day readmission in patients with acute heart failure. METHODS: In a retrospective cohort study, patients diagnosed with acute heart failure or chronic heart failure with acute exacerbation admitted to Fuyang People's Hospital from January 2021 to April 2023, this study used DAPA (at a dose of 10 mg once daily) in combination with standard treatment. The patients were divided into DAPA group and DAPA-Free group based on whether they used DAPA in acute heart failure. To minimize the influence of confounding factors and ensure comparability between groups, we used propensity score matching (PSM). RESULTS: A total of 399 patients were included, with 206 patients (51.63%) in the DAPA group and 193 patients (48.37%) in the DAPA-Free group. PSM produced 160 pairs. After PSM, there were no statistically significant differences between the DAPA and DAPA-Free groups in terms of readmission of all causes (16.88% vs. 18.12%, OR 0.9141, 95% CI 0.5385-1.552, log rank P = 0.739) or readmission for heart failure (11.88% vs. 15.0%, OR 0.9077, 95% CI 0.4441-1.469, log rank P = 0.484) after 90-day follow-up. Patients in the DAPA group had a lower mean daily dose of intravenous loop diuretics compared to the DAPA-Free group (20 mg/d vs. 30.00 mg/d, P<0.001), lower total loop diuretic dose during hospitalization (106.06 ± 31.23 mg vs. 144.50 ± 45.39 mg, P = 0.038) and a decreased number of diuretic types used (11.88% vs. 23.12%, P = 0.008). CONCLUSIONS: DAPA reduced the dose of intravenous loop diuretics. However, it did not improve all-cause readmission for 90 days or readmission for heart failure after discharge.