• Y Nakae, M Miyabe, H Sonoda, S Kawana, and A Namiki.
• Department of Anesthesia, Kushiro City General Hospital.
• Masui. 1995 Feb 1;44(2):239-43.

AbstractWe compared intubating conditions under sevoflurane (group S) and halothane (group H) anesthesia in pediatric patients for otorhinolaryngological surgery. One hundred and six patients were divided randomly into group S (n = 60) and group H (n = 46). Anesthesia was induced with nitrous oxide-oxygen-sevoflurane (GOS, end-tidal sevoflurane concentration; 4.5%) or nitrous oxide-oxygen-halothane (GOF, end-tidal halothane concentration; 1.6%). Intubating conditions were assessed according to the intubation score, which consists of the following three factors; mouth opening, visibility of vocal cord and body movement. Each factor is divided into three grades (0, 1, 2); total scores of 0 correspond to excellent. In comparing the groups with respect to anesthetic induction, group S required 180 sec for disappearance of spontaneous breathing and 660 sec for completion of intubation, while, in group H, the above time intervals were 188 and 676 sec, respectively. We achieved significantly better intubating conditions in group H than group S. There were significantly more cases in group S than in group H in which vocal cord visibility was insufficient. Body movement during intubation was observed in 27% and 26% of patients in group S and H, respectively. In conclusion, halothane anesthesia provides better intubating conditions than sevoflurane anesthesia in slow induction for pediatric patients.

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