Abstract
In this double-blind, randomized study, we have investigated 100 healthy children, aged 3-6 yr. We compared intubating conditions and cardiovascular changes during light halothane anaesthesia and propofol 3 mg kg-1 with those during deep halothane anaesthesia. Light halothane anaesthesia was defined as an end-tidal concentration of 1%, deep halothane anaesthesia as 2%. Intubating conditions were graded according to ease of laryngoscopy, vocal cord position and coughing. There were no statistically significant differences in the assessment of intubating conditions between the two groups; 94% of the children in the 1% halothane-propofol group and 100% of the children in the 2% halothane group had acceptable intubating conditions. Systolic arterial pressure decreased by 13% in the 1% halothane-propofol group compared with 20% in the 2% halothane group (P < 0.01).
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