Am. Hepner et al., EARLY CHRONOTROPIC INCOMPETENCE PREDICTS THE NEED FOR ATROPINE DURINGDOBUTAMINE STRESS ECHOCARDIOGRAPHY, The American journal of cardiology, 79(3), 1997, pp. 365
Analysis of heart rate responses in 130 patients undergoing dobutamine
stress echocardiography revealed that heart rate response at 20 mu g/
kg/min predicted the eventual need for atropine in chronotropically in
competent patients. Administering atropine at intermediate doses of do
butamine rather than at peak stress may reduce test duration and provi
de a more balanced chronotropic and inotropic stress.