الفهرس 
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Abstract
Background: Inhalation mask induction is a cornerstone of pediatric anesthesia. Because of their natural aversion to needles, healthy children are usually anesthetized by mask prior to intravenous insertion. The early insertion of an intravenous access provides a means for administering fluids and drugs if an untoward event occurs during inhalational induction. Sevoflurane is the inhalation agent most commonly used for mask inductions in pediatric anesthesia, having largely replaced halothane for this purpose.
Objectives: The aim of the study was to evaluate the optimum end tidal concentration of Sevoflurane at which an intravenous cannulation can be successfully attempted without movement in pediatric patients.
Patients and Methods: In this clinical trial, pediatric subjects of either sex aged 2-5 years, weighing 10-20 kg were included.
Results: Showed that an end tidal sevoflurane of 1.46% has 50% probability for successful intravenous cannulation without movement in children.
Conclusion: We conclude that an end tidal sevoflurane of 1.46% has 50% probability for successful intravenous cannulation in un- premedicated children aged between 2 and 5 years.