Abstract
Anaesthetic agents used for magnetic resonance imaging (MRI) in paediatric patients should cause few adverse effects and allow fast anaesthetic induction and recovery. The administration route is also important and should be minimally invasive. In this study, we aimed to compare two different doses of intranasal dexmedetomidine applied to children for MRI sedation. Sixty patients between 1 and 10 years of age with American Society of Anesthesiologists Physical Status classification I or II who were scheduled for MRI were recruited into this prospective, randomized, double-blind study. Intranasal dexmedetomidine was administered at doses of 3 µg kg(-1) (Group 1) and 4 µg kg(-1) (Group 2) before imaging. Heart rate (HR), peripheral oxygen saturation, respiratory rate and Ramsay Sedation Scale (RSS) scores were recorded before the anaesthetic induction of sedation and every 10 min until discharge. If intranasal sedation failed, an intravenous cannula was placed and propofol was applied as a rescue anaesthetic. Bispectral Index (BIS) scores were also recorded before and after MRI. We recorded onset time of sedation, mood at separation from parents (defined as parental separation score), imaging quality, MRI duration, rescue anaesth...Continue Reading
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