Isoflurane reduces pain sensitivity (analgesia) and relaxes muscles. The mechanism by which general anesthetics produce the anesthetic state is not clearly understood but likely involves interactions with multiple receptor sites to interfere with synaptic transmission.
Isoflurane, USP may be used for induction and maintenance of general anesthesia. Adequate data have not been developed to establish its application in obstetrical anesthesia.
Inhalation induction: initial 0.5 % v/v with oxygen or oxygen and nitrous oxide, increase to 1.5- 3 % v/v.
1-2.5% v/v with oxygen only.