Figure 2. Effects of isoflurane on mean arterial pressure (MAP) in groups 1 (top), 2 (middle), and 3 (bottom). In groups 1 and 3, MAP initially decreased, recovered or reached a plateau, and finally decreased. In group 2, isoflurane decreased MAP in a dose-dependent manner. *P < 0.05 versus before inhalation. Values are mean+/- SEM.