title: [Mechanism of positive inotropic action of catecholamines].
mesh_terms: D015105:3',5'-Cyclic-AMP Phosphodiesterases / Q000494:pharmacology; D000818:Animals; D002121:Calcium Channel Blockers / Q000494:pharmacology; D002395:Catecholamines / Q000502:physiology*; D000242:Cyclic AMP / Q000378:metabolism; D004285:Dogs; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D009206:Myocardium / Q000378:metabolism; D051381:Rats; D013268:Stimulation, Chemical
chemical_list: D002121:Calcium Channel Blockers; D002395:Catecholamines; D000242:Cyclic AMP; D015105:3',5'-Cyclic-AMP Phosphodiesterases