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Published on: November 13, 2019
Prolonged Dexmedetomidine Infusion and Drug Withdrawal In Critically Ill Children
Astrid S Haenecour1, Winnie Seto1, Charline M Urbain1
1Department of Critical Care Medicine (ASH, WS, PCL, CRB), The Hospital for Sick Children, Toronto, Canada; Department of Pharmacy (WS), The Hospital for Sick Children, Toronto, Canada; Department of Diagnostic Imaging and Neuroscience & Mental Health Program (CMU), The Hospital for Sick Children Research Institute, Toronto, Canada; Department of Clinical research services (DS), The Hospital for Sick Children, Toronto, Canada; and University of Toronto (DRB, PCL, WS), Toronto, Ontario, Canada.
Prolonged dexmedetomidine infusions in critically ill children can lead to withdrawal symptoms in 35% of cases. Higher cumulative doses and longer opioid use increase withdrawal risk, suggesting a need for weaning protocols.
Area of Science:
- Pediatric Critical Care Medicine
- Pharmacology
- Clinical Toxicology
Background:
- Dexmedetomidine is commonly used for sedation in pediatric intensive care units.
- Prolonged use may be associated with withdrawal syndromes.
- Limited data exists on withdrawal characteristics in pediatric populations.
Purpose of the Study:
- To determine the incidence, symptoms, and risk factors for dexmedetomidine withdrawal in critically ill children.
- To identify thresholds for cumulative dexmedetomidine dose associated with withdrawal.
Main Methods:
- Retrospective chart review of pediatric patients receiving dexmedetomidine for over 48 hours.
- Analysis of patient demographics, infusion details, and withdrawal symptoms.
- Statistical analysis to identify risk factors for withdrawal.
Main Results:
- Withdrawal occurred in 35% of 68 dexmedetomidine treatment courses.
- Common symptoms included agitation, fever, vomiting, and decreased sleep.
- Cumulative dexmedetomidine dose >107 mcg/kg and duration of opioid use were significant risk factors.
- Clonidine did not prevent withdrawal.
Conclusions:
- Withdrawal syndrome is a potential complication of prolonged dexmedetomidine infusion in children.
- Cumulative dose and concurrent opioid use are key factors influencing withdrawal.
- Development of a standardized weaning protocol is recommended.
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