This is a prospective, monocentric diagnostic study aiming to evaluate whether a sedation score obtained by a per-procedural electroencephalogram (EEG), the PSI score, could identify patients for whom a 2 μg/kg dose of DEX would not be sufficient for the successful performance of cerebral NMRI, and who could therefore benefit from a higher dosage of DEX (4 μg/kg).
Indication of DEX sedation for brain NMRI at the CHR de Metz-Thionville
in a patient aged between 12 months and 5 years or
for a patient aged between 5 and 18 whose cooperation during the examination appears compromised (previous failure, autism spectrum disorders, etc.).
Membership of a social security scheme
Weight < 10 kg
Patients with contraindications to the use of DEX
Hypersensitivity to the active ingredient or to any of the excipients listed in the section on "Hypersensitivity".
Advanced heart block (level 2 or 3), unless pacemaker implanted