Use of Sevoflurane During Elective Cesarean Birth

75 patients presenting for elective cesarean birth (55 under general anesthesia, 20 under regional/spinal anesthesia)

Sevoflurane 1% in a 50% nitrous oxide and oxygen mixture for maintenance

Isoflurane 0.5% in a 50% nitrous oxide and oxygen mixture for maintenance, or spinal anesthesia (1.5 mL bupivacaine 0.75% in 8.25% dextrose with fentanyl 10 micrograms)

Maternal and neonatal outcomes including intraoperative hemodynamics, perioperative adverse events, Apgar scores, umbilical artery gas analysis, neurologic adaptive capacity scores (NACS), and modified neonatal behavioral assessment scale (NBAS)safety