Levosimendan is a calcium sensitizer and its inotropic effect is mainly attributed to the troponin C of the myocardial fine filaments with calcium. Levosimendan also inhibits phosphodiesterase III. In contrast to inotropic effects, this does not increase calcium entry into the cell, which explains that levosimendan does not worsen myocardial diastolic dysfunction and may even improve diastolic function. Levosimendan does not increase the use of myocardial oxygen and increases coronary vasodilation and myocardial oxygen delivery. Levosimendan opens potassium channels and causes hyperpolarization in smooth muscle cell membrane, thus causing vasodilatation . Levosimendan has also been reported to have antiinflammatory [2,3] and antiapoptotic effects .