twelve patients in shock , defined as being present if the mean arterial blood pressure was less than 60 mm hg , pulmonary arterial occlusion pressure was 15 mm hg or greater , urine output was 20 ml or less for 2 consecutive hours , and there was clinical evidence of poor peripheral perfusion , underwent a comparative therapeutic trial with dopamine at 200 micrograms . min-1 and 400 micrograms . min-1 ( 2.5-5.5 micrograms . kg-1 . min-1 ) , dobutamine 250 micrograms . min-1 and 500 micrograms . min-1 ( 3.5-7 micrograms . kg-1 . min-1 ) and isoproterenol 2 micrograms . min-1 and 4 micrograms . min-1 ( 0.025-0.055 micrograms . kg-1 . min-1 ) .
C0036974
shock
C0013030
dopamine