title: Early chronotropic incompetence predicts the need for atropine during dobutamine stress echocardiography.
abstract: Analysis of heart rate responses in 130 patients undergoing dobutamine stress echocardiography revealed that heart rate response at 20 microg/kg/min predicted the eventual need for atropine in chronotropically incompetent patients. Administering atropine at intermediate doses of dobutamine rather than at peak stress may reduce test duration and provide a more balanced chronotropic and inotropic stress.
authors.affiliation: Division of Cardiology, University of Michigan, Ann Arbor 48109-0119, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Hepner
authors.forename: D S
authors.initials: DS
authors.lastname: Bach
authors.forename: W F
authors.initials: WF
authors.lastname: Armstrong
mesh_terms: D000318:Adrenergic beta-Agonists; D001285:Atropine; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology*; D004280:Dobutamine; D004452:Echocardiography / Q000379:methods; D005080:Exercise Test / Q000379:methods; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D010276:Parasympatholytics; D011237:Predictive Value of Tests
chemical_list: D000318:Adrenergic beta-Agonists; D010276:Parasympatholytics; D004280:Dobutamine; D001285:Atropine