Safety and Efficacy of Dexmedetomidine (DEX) for Sedation of Subjects ≥1 Month to <17 Years Undergoing MRI Scans

A PHASE 3/4 RANDOMIZED, DOUBLE-BLIND, DOSE-RANGING STUDY OF THE SAFETY AND EFFICACY OF DEXMEDETOMIDINE (DEX) USED WITH PROPOFOL (PRO) AS NEEDED FOR PROCEDURAL SEDATION OF PEDIATRIC SUBJECTS ≥1 MONTH TO <17 YEARS OF AGE UNDERGOING MRI SCANS

This is a randomized, double-blind, dose-ranging study of the efficacy and safety of dexmedetomidine (DEX) when used with propofol as needed, for procedural sedation of pediatric subjects ≥1 month to <17 years of age undergoing MRI scans in the US and Japan.

Key Inclusion Criteria:

1. Male or female subject ≥1 month and <17 years of age.
2. American Society of Anesthesiologists (ASA) Physical Status I, II or III.
3. Requires non-intubated, spontaneous breathing, moderate to deep sedation (NI MDS) for a magnetic resonance imaging (MRI) study with an intensivist, anesthesiologist or other proceduralist in attendance.
4. Duration of the MRI scan is expected to take at least 20 minutes but no more than 3 hours to complete

Key Exclusion Criteria:

1. Pregnant female subjects (including those with an indeterminate or positive pregnancy test); breastfeeding female subjects.
2. Weight on Day 1 before randomization is less than the 10th percentile of weight for age and sex in the US and Japan or is greater than the 95th percentile of weight for age and sex in the US or greater than the 97th percentile of weight for age and sex in Japan based on sponsor-provided growth charts.
3. Planned medical procedure during the MRI scan or post-MRI recovery period.
4. Requires endotracheal intubation or laryngeal mask airway (LMA).
5. Known allergy to eggs, egg products, soybeans or soybean products.
6. SpO2 <93 % on room air -