Stable heart failure defined by symptoms and signs of heart failure as judged by local Investigator
Left ventricular ejection fraction (LVEF) ≥40% recorded in last 12 months (stratified to max 2/3rd in either 40-49% or ≥50% group)
Elevated natriuretic peptide levels, as defined by any of the following:
1. most recent NT-proBNP \>300 ng/L (or BNP\>100 pg/mL) in sinus rhythm at time of blood sampling; adjustments may be made for BMI according to table 3.
2. most recent NT-proBNP \>750 ng/L (or BNP \>250 pg/mL) in atrial fibrillation at time of blood sampling; adjustments may be made for BMI according to table 3.
3. NT-proBNP \>1200 ng/L (or BNP \>400 pg/mL) within the last 12 months even if most recent value is lower.
Regular use of loop diuretics, defined as daily or most days of the week
NYHA Class II-IV
You may not be if
Previously enrolled in this study
Known Ejection Fraction \< 40% ever
Current absolute indication or contraindication for MRA (mineral receptor antagonist) in judgement of Investigator
Known chronic liver disease
Probable alternative explanations for symptoms:
* Known primary cardiomyopathy (hypertrophic, constrictive, restrictive, infiltrative, congenital)
