Résumé
ackground: We compared high doses of sevoflurane with incremental doses of sevoflurane during induction in paediatric patients. Methods: The present prospective, randomized single blind study conducted in the Dept. of Anaesthesiology PGIMS, Rohtak. . A total of 80 patients of either sex and age ( 1-6 yrs) years presenting for elective surgery under general anesthesia were included in the study.Ethical clearance and written informed consent taken for study. . Patients were randomly divided in 2 groups (I and II) of 40 each.Group I patients ) were induced with high dose (8%) sevoflurane whereas group II patients were induced with incremental dose of sevoflurane (1% to 8%). Study parameters (HR, BP, SpO2) were recorded just before starting induction (T0) and at 30 seconds (T1), 60 seconds (T2), loss of eyelash reflex (T3) and after insertion of PLMA (T4). Results: Our primary outcome, time required for induction of anaesthesia in Group I was found to be 60.225 ±4.932 secs and for the Group II it was found to be 84.9± 6.953secs.The difference was highly significant between the two groups (p value = 0.0001). Conclusion: This randomised,blind controlled study suggests that the time for induction of anesthesia could be significantly shortened using sevoflurane with a high concentration primed circuit as compared with incremental induction technique. The effect of both these techniques on haemodynamic parameters was statistically insignificant. Also both the techniques were safe and well tolerated in paediatric patients.