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  • Title: Effects of long-term treatment with pimobendan on neurohumoral factors in patients with non-ischemic chronic moderate heart failure.
    Author: Sasaki T, Kubo T, Komamura K, Nishikimi T.
    Journal: J Cardiol; 1999 Jun; 33(6):317-25. PubMed ID: 10396705.
    Abstract:
    To evaluate the effects of the addition of pimobendan to an optimal basic regimen on plasma levels of neurohumoral factors in patients with non-ischemic, moderate heart failure during 2-year follow-up. This prospective, observational study involved 16 patients with non-ischemic, moderate heart failure [New York Heart Association (NYHA) functional class IIM-III] receiving an optimal basic regimen of digitalis, diuretics and angiotensin-converting enzyme inhibitor. Eight patients (Group P) were also administered pimobendan at a dose of 2.5 or 5 mg daily, while the other 8 served as controls (Group C). After 3 months of pimobendan administration, the plasma levels of norepinephrine and atrial natriuretic peptide and brain natriuretic peptide decreased and left ventricular ejection fraction improved. After 1 year, the cardiac symptoms, assessed using the Specific Activity Scale as well as the NYHA functional class, improved and the left ventricular end-diastolic diameter decreased. These improvements in Group P were maintained for 2 years. However, in Group C, the cardiac symptoms and the neurohumoral factor levels remained unchanged or deteriorated during this study, and one patient died of heart failure. Long-term combination therapy with the optimal basic regimen and pimobendan has potentially beneficial effects on neurohumoral factor levels and cardiac symptoms in patients with non-ischemic, chronic moderate heart failure.
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