Effect of Sevoflurane on Sweat Threshold in Children of Different Ages

Core temperature will be measured in the distal esophagus. The esophageal probe will be inserted after intubation to the depth from the upper incisors recommended by Bloch et al,1 specifically one-quarter of the patient's height plus 4.5 cm.

Anesthesia induction will be standardized for all participants., the children will undergo inhalational induction using 8% sevoflurane with a fresh gas flow of 5 L/min in 100% oxygen. Once children loses consciousness, the sevoflurane concentration will be reduced to 3%-5% and then maintained as close as possible to 1.2 MAC, age-adjusted