<unk>  is used to treat acute but potentially reversible heart failure, such as which occurs during cardiac surgery or in cases of septic or cardiogenic shock, on the basis of its positive inotropic action.<unk>  can be used in cases of congestive heart failure to increase cardiac output. It is indicated when parenteral therapy is necessary for inotropic support in the short-term treatment of patients with cardiac decompensation due to depressed contractility, which could be the result of either organic heart disease or cardiac surgical procedures. Higher doses are not useful with history of recent ischemic heart disease because it increases heart rate and thus increases myocardial oxygen demand. The drug is also commonly used in the hospital setting as a pharmacologic stress testing agent to identify coronary artery disease.
Dobutamine
Adenosine
Adrenaline
Norepinephrine 
Norepinephrine
Epinephrine 
Synephrine
Esmolol