Mechanism of Action
Levosimendan is a novel, first in class calcium sensitizer/K-ATP activator. The therapeutic effects of levosimendan are mediated through:
- increased cardiac contractility by calcium sensitization of troponin C, resulting in a positive inotropic effect which is not associated with substantial increases in oxygen demand (3).
- opening of potassium channels in the vasculature smooth muscle, resulting in a vasodilatory effect on all vascular beds (4).
- opening of mitochondrial potassium channels in cardiomyocytes, resulting in a cardioprotective effect (5)