New positive inotropic agents.
D000818:Animals; D002316:Cardiotonic Agents / Q000627:therapeutic use*; D006333:Heart Failure / Q000188:drug therapy*; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D009200:Myocardial Contraction / Q000187:drug effects*; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D014665:Vasodilator Agents
D002316:Cardiotonic Agents; D010726:Phosphodiesterase Inhibitors; D014665:Vasodilator Agents