isoproterenol ( 0.1 microgram/kg ) initially decreased mean arterial pressure by 25 +/- 2 % ( mean +/- sem ) , and ldcr by 62 +/- 4 % , and increased heart rate by 82 +/- 10 % , left ventricular ( lv ) dp/dt by 79 +/- 12 % , and mean coronary blood flow by 85 +/- 5 % , while csa rose slightly .
C0022245
isoproterenol
C0039231
increased heart rate