Clonidine Versus Chloral Hydrate for Recording Sleep EEG in Children

ObjectiveOne of the difficulties for conduct electroencephalography (EEG) in pediatric patient population is that they are not always cooperative during the procedure. Different medications have been used to induce sedation during EEG recording. In order to find a medication with least adverse effects and high efficacy, we aimed to compare clonidine and chloral hydrate as a premedication prior EEG performing in pediatric population. Materials & MethodsA prospective, randomized, single-blinded, controlled trial was carried out over 198 children (9 to 156 months) to investigate the sedative and adverse effects of clonidine and chloral hydrate. Patients, partially sleep-deprived the night before, were randomly divided in two groups of clonidine (100 patients) and chloral hydrate (98 patients), on an alternative day basis.Results The average sleep onset latency was significantly longer in the clonidine group than chloral hydrate group (Mann-Whitney test, p < 0.0001). Sleep duration ranged between 15-150 minutes and it was not significantly different between two groups (Mann-Whitney test p = 0.2). Drowsiness with chloral hydrate terminated faster than with clonidine. Drowsiness after arousal was seen in 58% and 26.1% of patients in the clonidine and chloral hydrate groups respectively that was  significant  (Mann-Whitney test, p = 0.058). EEG results were reported normal in 77 subjects in the chloral hydrate group (77%) and in 69 subjects (69%) in the clonidine group (p = 0.161). Generalized epileptiform discharges  reported significantly  in the clonidine group  (Mann-Whitney test , p = 0.006).ConclusionThe results of this study showed that both chloral hydrate 5% (one ml/kg)and clonidine (4 μg/kg)could be administered as a pre medication agent for EEG recording in children , although drowsiness after arousal of clonidine is greater than chloral hydrate . However, the yield of generalized epileptiform discharges in the clonidine group was more than the chloral hydrate group.

Article Type:
Research/Original Article
Iranian Journal of Child Neurology (IJCN), Volume:14 Issue:1, 2020
85 - 92  
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