using his-bundle-electrography and programmed atrial stimulation the effects of different catecholamines ( dopamine , dobutamine , orciprenaline ) , parasympatholytics like atropine , ipratropiumbromide and the xanthine derivative aminophylline have been studied on the conduction system of the human heart in 119 patients with and without different disturbances of rhythm .
C0007412
catecholamines
C0012963
dobutamine