Anesthesia was maintained with low-flow( L/min)inhalation of isoflurane and nitrous oxide in oxygen(N_O:O_=:)and intermittent i.v.
Anesthesia was maintained with low-flow( L/min)inhalation of isoflurane and nitrous oxide in oxygen(N_O:O_=:)and intermittent i.v.
低流量吸入异氟醚(新鲜气流量为 L/min,N_O:O_=:)维持麻醉。