experiments assessed the relative importance of parasympathetic vs. sympathetic control by pharmacologic blockade with atropine ( 0.2 mg/kg ) or propranolol ( 1.0 mg/kg ) while pacing the right atrium ( 100-400 beats/min ) in normal , conscious resting dogs and in dogs that had undergone chronic , intrapericardial cardiac denervation .
C0225844
right atrium
C0018787
cardiac