Recovery characteristics of sevoflurane or halothane for day-case anaesthesia in children aged 1-3 years

Background: Our objective was to compare the recovery characteristics of se voflurane and halothane for short day-case anaesthesia in a specifically li mited age group of children 1-3 yr. Methods: Eighty unpremedicated children undergoing day-case adenoidectomy w ere randomly assigned to receive inhalational induction with either sevoflu rane 8% or halothane 5% and nitrous oxide in oxygen (70/30) via a face mask . Tracheal intubation was performed without a muscle relaxant. Anaesthesia was continued with the volatile anaesthetic, adjusted to maintain heart rat e and blood pressure within +/-20% of initial values. Recovery was evaluate d using a modified Aldrete score, a Pain/Discomfort scale and by measuring recovery end-points. A postoperative questionnaire was used to determine th e well-being of the child at home until 24 h after discharge. Results: Emergence and interaction occurred significantly earlier after sev oflurane than halothane but discharge times were similar. More children in the sevoflurane group achieved full Aldrete scores within the first 30 min after anaesthesia, although this group suffered more discomfort during the first 10 min. The amount of postoperative analgesic administered was higher and the first dose given earlier in the sevoflurane group. Postoperative v omiting was more common with halothane, but side-effects in the two groups were otherwise similar in the recovery room and at home. Conclusions: In children 1-3 yr, sevoflurane provided more rapid early reco very but not discharge after anaesthesia of <30-min duration. Apart from mo re vomiting with halothane and more discomfort during the first 10 min afte r awakening with sevoflurane, the quality of recovery was similar with the two anaesthestics.