title: Echocardiographic comparison between prenalterol and dobutamine.
abstract: Prenalterol, a new cardioselective beta 1-adrenoceptor agonist, was compared with the beta-stimulator dobutamine by computer-assisted echocardiography. Prenalterol decreased preload, increased heart rate and induced an increase in contractility for a longer time in comparison with dobutamine. The small influence on blood pressure and afterload indicates selective beta 1-receptor-effect by a result of slight changes in the peripheral vascular resistance.
mesh_terms: D000293:Adolescent; D000318:Adrenergic beta-Agonists / Q000494:pharmacology*; D000328:Adult; D001794:Blood Pressure / Q000187:drug effects; D002302:Cardiac Output / Q000187:drug effects; D002395:Catecholamines / Q000494:pharmacology*; D003201:Computers; D004280:Dobutamine / Q000008:administration & dosage / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004452:Echocardiography; D006321:Heart / Q000187:drug effects*; D006329:Heart Conduction System / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D007263:Infusions, Parenteral; D009200:Myocardial Contraction / Q000187:drug effects; D011217:Practolol / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000097:blood / Q000494:pharmacology; D011294:Prenalterol
chemical_list: D000318:Adrenergic beta-Agonists; D002395:Catecholamines; D004280:Dobutamine; D011294:Prenalterol; D011217:Practolol