A series of 25 patients undergoing iterative cesarean section under general anesthesia received isoflurane at 0.75% together with a mixture of O2 and N2O at 50% for anesthetic maintenance. The inhalant agent was withdrawn when closing fascia. There was no case of regaining of consciousness during the operations. Uterine contraction was acceptable as evaluated by the surgeon at the end of the operation. Mean hematocrit value was 31.43 (SD 1.27) at 6 hours of operation. Fetal arterial gasometric values and Apgar score at 5 and 10 minutes fell within acceptable limits.