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Melatonin vs. dexmedetomidine for sleep induction in children before electroencephalography
Katja Peganc Nunčič1, David Neubauer1,2, Jasna Oražem Mrak1
1Department of Pediatric Neurology, University Children's Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Insights
Melatonin and dexmedetomidine are safe for inducing sleep in children before EEG. Dexmedetomidine is more effective than melatonin, especially for children with complex behavioral issues, ensuring successful EEG recordings.
Area of Science:
- Pediatric Neurology
- Clinical Pharmacology
- Neurophysiology
Background:
- Electroencephalography (EEG) in children often requires sleep recordings for accurate diagnosis.
- Spontaneous sleep is not always achievable, necessitating pharmacological interventions.
- Evaluating sedative agents for sleep induction prior to pediatric EEG is crucial.
Purpose of the Study:
- To compare the safety and efficacy of melatonin and dexmedetomidine for sleep induction in children undergoing EEG.
- To assess intranasal and sublingual dexmedetomidine versus melatonin.
- To analyze outcomes in a subgroup of children with complex behavioral problems.
Main Methods:
- A prospective randomized study involving 156 pediatric patients (aged 1-19 years).
- Patients were randomized into three groups: melatonin (0.1 mg/kg), sublingual dexmedetomidine (3 mcg/kg), or intranasal dexmedetomidine (3 mcg/kg).
- Efficacy and safety parameters were compared, including a subgroup analysis for behavioral challenges.
Main Results:
- High overall sleep achievement rates (93.6% after first dose, 99.4% after second).
- Dexmedetomidine demonstrated significantly higher efficacy (99.0%) compared to melatonin (83.3%) (p < 0.001).
- Intranasal dexmedetomidine led to faster sleep onset than sublingual administration (p = 0.006); no adverse events like respiratory depression or bradycardia were observed.
Conclusions:
- Both melatonin and dexmedetomidine are safe for pediatric EEG sleep induction.
- Dexmedetomidine is superior to melatonin in efficacy, including in children with complex behavioral issues.
- Intranasal dexmedetomidine offers a faster onset of sleep compared to sublingual administration.
Background And Objectives:
In children requiring electroencephalography (EEG), sleep recording can provide crucial information. As EEG recordings during spontaneous sleep are not always possible, pharmacological sleep-inducing agents are sometimes required. The aim of the study was to evaluate safety and efficacy of melatonin (Mel) and dexmedetomidine (Dex; intranasal and sublingual application) for sleep induction prior to EEG.
Methods:
In this prospective randomized study, 156 consecutive patients aged 1-19 years were enrolled and randomized by draw into melatonin group (Mel; n = 54; dose: 0.1 mg/kg), dexmedetomidine (Dex) sublingual group (DexL; n = 51; dose: 3 mcg/kg) or dexmedetomidine intranasal group (DexN; n = 51; dose: 3 mcg/kg). We compared the groups in several parameters regarding efficacy and safety and also carried out a separate analysis for a subgroup of patients with complex behavioral problems.
Results:
Sleep was achieved in 93.6% of participants after the first application of the drug and in 99.4% after the application of another if needed. Mel was effective as the first drug in 83.3% and Dex in 99.0% (p < 0.001); in the subgroup of patients with complex developmental problems Mel was effective in 73.4% and Dex in 100% (p < 0.001). The patients fell asleep faster after intranasal application of Dex than after sublingual application (p = 0.006). None of the patients had respiratory depression, bradycardia, desaturation, or hypotension.
Conclusions:
Mel and Dex are both safe for sleep induction prior to EEG recording in children. Dex is more effective compared to Mel in inducing sleep, also in the subgroup of children with complex behavioral problems.
Clinical Trial Registration:
Dexmedetomidine and Melatonin for Sleep Induction for EEG in Children, NCT04665453.
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