<prompt> LEVOSIMENDAN acts on the all the following mechanism except ?phosphodiesterase inhibitor 3neprilysin inhibitorpotassium channel openersensitizes myocardium to calcium channels  <response>: Molecular Targets Pharmacological Effects Calcium sensitisation of the contractile inotropy without increase of calcium transient and oxygen consumption apparatus by selective binding to calcium Anti-stunning effect saturated cardiac troponin C Opening of the ATP-sensitive potassium Vasodilation including coronary aeries channels on the smooth muscle of the vasculature increase of end-organ perfusion Opening of the mitochondrial ATP- .Cardioprotection and organ protection Anti-ischaemic effect sensitive potassium channels REF : KD TRIPATHI 8TH ED 