Comparison of effects of aldosterone receptor antagonists spironolactone and eplerenone on cardiovascular outcomes and safety in patients with acute decompensated heart failure
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Differences in the clinical impacts of the aldosterone receptor antagonists spironolactone and eplerenone in patients with heart failure (HF) are unclear. Among 838 prospectively enrolled patients hospitalized for HF, 90 treated with eplerenone were compared with 90 treated with spironolactone. The primary endpoint was a composite of cardiovascular death and hospitalization. A serial evaluation of the clinical parameters was performed 1 year after discharge. The mean dose of spironolactone was 27 ± 8 mg and of eplerenone was 34 ± 15 mg. During follow-up (mean 594 ± 317 days), primary endpoints occurred in 27 patients in the eplerenone group (30.0%) and 25 patients in the spironolactone group (27.8%). There were no significant intergroup differences in the primary endpoint (log-rank, p = 0.956). Serial changes in left ventricular ejection fraction, serum brain natriuretic peptide, systolic blood pressure, and estimated glomerular filtration rate did not differ significantly between groups. Although gynecomastia in men was common in the spironolactone group (p = 0.018), the discontinuation rates due to adverse events were similar in the two groups (p = 0.135). Subgroup analyses suggested that eplerenone was associated with a lower hazard rate of the primary endpoint in female patients (interaction, p = 0.076). Among patients with HF, eplerenone and spironolactone have similar impacts on cardiovascular outcomes and safety.
KeywordsAldosterone receptor antagonist Spironolactone Eplerenone Heart failure
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Conflict of interest
The authors declare that they have no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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