to assess the stress-ablating action of different anesthetics ( halothane , enflurane , morphine , and spinal ) and anesthetic doses , we studied the responses in plasma norepinephrine , muscle movement , pupil diameter , heart rate , and blood pressure to induction of anesthesia and incision in 170 unpremedicated healthy adults .
C0018549
halothane
C0028351
norepinephrine