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Intramuscular dexmedetomidine sedation for pediatric MRI and CT
Keira P Mason1, Nina B Lubisch, Fay Robinson
1Department of Anesthesiology, Children's Hospital Boston, 300 Longwood Ave, Boston, MA 02115, USA. keira.mason@childrens.harvard.edu
AJR. American Journal of Roentgenology
|August 25, 2011
Summary
Intramuscular dexmedetomidine provides effective sedation for pediatric MRI and CT scans. This method is a viable alternative for children requiring imaging, with minimal adverse effects observed.
Area of Science:
- Pediatric Anesthesiology
- Pharmacology
- Radiology
Background:
- Intramuscular dexmedetomidine is established for adult perioperative sedation.
- The intramuscular route for pediatric sedation is not well-described.
- Dexmedetomidine is used for procedural sedation in children.
Purpose of the Study:
- To evaluate the efficacy and safety of intramuscular dexmedetomidine for pediatric sedation during MRI and CT scans.
- To determine if intramuscular dexmedetomidine can achieve adequate sedation levels for imaging procedures in children.
Main Methods:
- Retrospective review of quality assurance data for children receiving intramuscular dexmedetomidine.
- Doses of 1-4 μg/kg administered to achieve a Ramsay sedation score of 4.
- Analysis of demographics, diagnoses, vital signs, adverse events, and outcomes.
Main Results:
- Sixty-five children successfully completed imaging studies with intramuscular dexmedetomidine.
- Mean doses were 2.9 μg/kg for MRI and 2.4 μg/kg for CT.
- Sedation was achieved within 13.1-13.4 minutes; discharge criteria met within 17.1-21.9 minutes.
- Hypotension occurred in 14% of patients, unrelated to dosage; no bradycardia, hypertension, or desaturation observed.
Conclusions:
- Intramuscular dexmedetomidine is a feasible alternative for pediatric procedural sedation.
- Further research is needed to confirm efficacy, safety, and hemodynamic outcomes in larger pediatric populations.
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