Plasma concentrations of oxytocin and vasopressin were not significantly changed in sevoflurane-treated dams. (A) Levels of plasma oxytocin concentration (control dams, n = 5; sevoflurane-treated dams, n = 4; sevoflurane and hydrogen–treated dams, n = 5; and hydrogen-treated dams, n = 5). (B) Levels of plasma vasopressin (control dams, n = 5; sevoflurane-treated dams, n = 4; sevoflurane and hydrogen–treated dams, n = 4; and hydrogen-treated dams, n = 5).