Figure 7. Summary of the inhibitory effects of volatile anesthetics on the hypoxic response. Open bars represent control response expressed as percent change from prehypoxic contraction to norepinephrine; solid bars represent responses in the presence of 1 MAC equivalent of halothane (n - 6 rabbits), isoflurane (n - 6 rabbits), and enflurane (n - 5 rabbits);* P < 0.05 versus corresponding control.