title: Letter: Catecholamines in arrhythmias after acute myocardial infarction.
mesh_terms: D001007:Anxiety; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000517:prevention & control*; D002986:Clinical Trials as Topic; D003975:Diazepam / Q000627:therapeutic use; D006801:Humans; D009203:Myocardial Infarction / Q000150:complications*; D010879:Piperazines / Q000627:therapeutic use; D010919:Placebos
chemical_list: D010879:Piperazines; D010919:Placebos; D003975:Diazepam