under 2 % halothane anesthesia ( n = 4 ) , 1 % halothane anesthesia ( n = 5 ) and norepinephrine infusion ( n = 4 ) , rats developed rate-pressure products of 19.5 +/- 1.6 , 32.0 +/- 3.5 , and 48.5 +/- 2.0 x 1,000 mmhg/min , respectively .
C0018549
halothane
C0028351
norepinephrine