ABSTRACT
Dexmendetomidine hydrochloride [DEX] is a new common adrenergic receptor agonist, which not only keeps children calm but also has analgesic effect. Dexmedetomidine hydrochloride will enable children to maintain the natural
non-REM sleep, which can be stimulated sedation or language arousal. The aim of this study is to observe the sedative effect and adverse drug reactions of dexmedetomidine hydrochloride injection and propofol injection in MRI
examination. In this study, no children in the experimental group were required to add sedative drugs, and 2 cases in the control group were treated with sedative drugs. In experimental group, it used dexmedetomidine hydrochloride as
[1.64+/-0.91] g/kg; in control group, dosage of narcotic drugs as [5.26+/-1.82] g/kg, and the total complication rate of the children in the experimental group was lower than that of the control group [P<0.05]. After returning to the ward, the doses of phenobarbital sedation were dexmedetomidine group [4.28+/-1.53] mg/kg and propofol group [6.40+/-1.71] mg/kg.There was significant difference between the two groups. The total complication rate in the experimental group was lower than that in the control group [P<0.05]. The quality of MRI in the test group was significantly higher than that in the control group, which showed that dexmedetomidine hydrochloride could provide a satisfactory sedative effect in the MRI examination of children. To sum up, dexmedetomidine hydrochloride is a wide range of clinical applications. It is an effective drug for the maintenance of sedation in clinical disease treatment. It is flexible in the way of administration and with less adverse reactions. It is suitable for popularization and application in clinical practice