Document Classification

Section Type: METHODS

Text: One hundred twenty unpremedicated children (age, 1-9 yr ; American Society of Anesthesiologists physical status I) were randomly assigned to receive 1 of 15 end-tidal concentrations of nitrous oxide and sevoflurane for inhalational induction via a facemask : 0 % nitrous oxide with 1. 2, 1. 4, 1. 6, 1. 8, or 2. 0 % sevoflurane ; 33 % nitrous oxide with 0. 8, 1. 0, 1. 2, 1. 4, or 1. 6 % sevoflurane ; or 67 % nitrous oxide with 0. 4, 0. 6, 0. 8, 1. 0, or 1. 2 % sevoflurane.