A Study to Determine the Efficacy and Safety of Finerenone on Morbidity and Mortality Among Hospitalized Heart Failure Patients

Inclusion Criteria:

* Provide written informed consent
* Age ≥18 years or legal age of majority if \>18 years in the participant's country of residence
* Current hospitalization or recently discharged (during or within 30 days of discharge) with the primary diagnosis of heart failure
* Heart failure signs and symptoms at the time of hospital admission
* Imaging evidence of mildly reduced or preserved left ventricular ejection fraction (EF) (40% or higher)
* Elevated N-terminal pro B-type natriuretic peptide (NTproBNP) ≥500 pg/mL or B-type natriuretic peptide (BNP) ≥125 pg/mL for patients without atrial fibrillation (AF); or elevated NTproBNP ≥1500 pg/mL or BNP ≥375 pg/mL for patients with AF

Exclusion Criteria:

* Current or planned long-term treatment with a mineralocorticoid receptor antagonist (MRA)
* Documented prior history of severe hyperkalemia in the setting of MRA use
* Estimated glomerular filtration rate (eGFR) \<25 mL/min/1.73m² or potassium \>5.0 mmol/L at screening
* Acute myocardial infarction due to plaque rupture, coronary revascularization, valve replacement/repair, or implantation of a cardiac resynchronization therapy device within 30 days
* Hemodynamically significant (severe) uncorrected primary cardiac valvular disease
* Cardiomyopathy due to known acute inflammatory heart, infiltrative diseases, accumulation diseases, muscular dystrophies, cardiomyopathy with reversible causes, known hypertrophic obstructive cardiomyopathy, complex congenital heart disease, or known pericardial constriction
* Probable alternative cause of participant's heart failure symptoms
* Concomitant systemic therapy with potent cytochrome P450 isoenzyme 3A4 (CYP3A4) inhibitors or moderate CYP3A4 inducers, or potent CYP3A4 inducers
* Known hypersensitivity to the IP (active substance or excipients)