• Br J Anaesth · Aug 2018

    Randomized Controlled Trial Comparative Study

    Comparison of nebulised dexmedetomidine, ketamine, or midazolam for premedication in preschool children undergoing bone marrow biopsy.

    • H S Abdel-Ghaffar, S M Kamal, F A El Sherif, and S A Mohamed.
    • Anaesthesia and Intensive Care Department, Faculty of Medicine, Assiut University, Assiut, Egypt. Electronic address: hallasaad@yahoo.com.
    • Br J Anaesth. 2018 Aug 1; 121 (2): 445-452.

    BackgroundThe aim of our study was to compare the efficacy of dexmedetomidine, ketamine, and midazolam for sedative premedication administered by nebuliser 30 min before general anaesthesia in preschool children undergoing bone marrow biopsy and aspiration.MethodsNinety children aged 3-7 yr were randomly allocated into three equal groups to be premedicated with either nebulised ketamine 2 mg kg-1 (Group K), dexmedetomidine 2 μg kg-1 (Group D), or midazolam 0.2 mg kg-1 (Group M). The primary endpoint was a five-point sedation score on arrival in the operating room 30 min after end of study drug administration. Secondary outcomes included: parental separation anxiety scale; medication and mask acceptance scales; haemodynamic variables; recovery time; postoperative face, legs, activity, cry, and consolability scale; emergence agitation scale; and adverse effects.ResultsThe median (range) sedation score on arrival in the operating room was 3.5 (1-4), 2.0 (2-3) and 2.0 (1-3) in Groups M, D, and K, respectively (P=0.000). Subjects in Group D showed higher medication (P<0.03) and mask acceptance scores (P<0.015) and more satisfactory parental separation anxiety scale (P<0.044). The median (range) recovery time was significantly shorter in Group D [5.5 (4-8) min] compared with Group K [10.0 (5-15) min, P=0.000] and M [8.0 (6-15) min, P=0.000]. The incidence of emergence agitation was lower in Group D (P<0.008).ConclusionsPreschool children premedicated with nebulised dexmedetomidine had more satisfactory sedation, shorter recovery time, and less postoperative agitation than those who received nebulised ketamine or midazolam.Clinical Trial RegistrationNCT02935959.Copyright © 2018 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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