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Dexmedetomidine Dosing to Prevent Pediatric Emergence Delirium
Alexander N Manning1, Leah K Bezzo2, Jamie K Hobson3
1is a nurse anesthetist at Robert Wood Johnson University Hospital. He was a student in the Master of Science in Nurse Anesthesia program at the Wake Forest School of Medicine at the time this article was written.
Insights
Administering dexmedetomidine (anesthesia medication) during surgery significantly reduces emergence delirium in children. A 0.5 µg/kg IV dose intraoperatively is effective with minimal side effects.
Area of Science:
- Anesthesiology
- Pediatric Anesthesia
- Pharmacology
Background:
- Emergence delirium is common in pediatric patients undergoing anesthesia.
- Dexmedetomidine, a selective α2 agonist, shows potential for preventing emergence delirium.
- Optimal protocols for dexmedetomidine use in pediatric anesthesia are not well-established.
Purpose of the Study:
- To review evidence on the efficacy and safety of dexmedetomidine for preventing emergence delirium in pediatric patients.
- To identify best practices for dexmedetomidine administration in the perioperative setting.
- To address barriers to dexmedetomidine use, including side effects and dosing.
Main Methods:
- Systematic review of evidence.
- Inclusion of 2,142 study participants aged 1 to 15 years.
- Analysis of dexmedetomidine timing, method, and dosage.
Main Results:
- Intraoperative intravenous bolus of 0.5 µg/kg dexmedetomidine significantly reduced emergence delirium.
- Administration immediately after anesthesia induction showed benefits without delayed emergence.
- Minimal side effects were observed with the recommended dosage and timing.
Conclusions:
- Dexmedetomidine, particularly a 0.5 µg/kg IV intraoperative dose, is effective in preventing emergence delirium in pediatric patients.
- This intervention can be safely administered without prolonging emergence from anesthesia.
- Dexmedetomidine may also reduce the need for volatile anesthetic agents and analgesics.
Abstract:
Because of the high incidence and untoward effects of emergence delirium in the pediatric population, investigating pharmacologic measures for preventing this phenomenon is important to the anesthesia provider. Dexmedetomidine, a highly selective α2 agonist, has been shown to prevent emergence delirium in the perioperative setting; however, recommendations for best practice regarding use of this medication are not widely available. Barriers to the use of dexmedetomidine may include side effects such as bradycardia and delayed emergence, as well as limited evidence for the best practice of timing, method, and dosing of dexmedetomidine. This review of the evidence included 2,142 study participants ranging in age from 1 to 15 years. The findings suggest that administering an intravenous bolus dose of 0.5 µg/kg of body weight in the intraoperative phase demonstrated a significant reduction in the incidence of emergence delirium with minimal side effects. Administration of dexmedetomidine immediately following induction of anesthesia revealed benefit in these patients without a delay in emergence from anesthesia. Along with the benefit of preventing emergence delirium in pediatric patients, the evidence also suggests that dexmedetomidine may lower volatile-agent and analgesic requirements.
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