Figure 1. Infarction:risk zone ratio for each in situ animal in the anesthetic groups pentobarbital (PENT), ketamine/xylazine (K/X), propofol (PROP), enflurane (ENFL), halothane (HALO), and isoflurane (ISOFL). Infarcts were significantly smaller in rabbits anesthetized with inhalational rather than intravenous agents. Open circles represent individual animals and closed circles represent group means with SEM.