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Effect of dexmedetomidine on preventing postoperative agitation in children: a meta-analysis
Juan Ni1, Jiafu Wei2, Yusheng Yao3
1Department of Anaesthesiology, West China Second University Hospital, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Chengdu, Sichuan, China.
Insights
Dexmedetomidine effectively prevents emergence agitation (EA) in children, reducing severe pain and the need for rescue drugs. While it slightly prolongs eye-opening and PACU discharge times, it is more beneficial than propofol or fentanyl for preventing EA.
Area of Science:
- Anesthesiology
- Pediatric Medicine
- Pharmacology
Background:
- Emergence agitation (EA) is a frequent postoperative complication in pediatric patients.
- Understanding effective pharmacological interventions for EA is crucial for improving pediatric surgical outcomes.
Purpose of the Study:
- To conduct a meta-analysis evaluating the efficacy of dexmedetomidine in preventing postoperative emergence agitation in children.
- To compare dexmedetomidine with placebo and other anesthetic agents for EA prevention.
Main Methods:
- Systematic search of major databases (Cochrane, MEDLINE, EMBASE) for randomized controlled trials.
- Inclusion of trials assessing dexmedetomidine's effect on EA incidence, rescue medication use, and recovery parameters (eye-opening, extubation, PACU discharge).
Main Results:
- Analysis of 19 trials (1608 patients) demonstrated that intravenous dexmedetomidine significantly reduced EA incidence compared to placebo (RR 0.34).
- Dexmedetomidine also decreased severe pain and the need for rescue drugs, but slightly increased time to eye-open and PACU discharge.
- Compared to other agents, dexmedetomidine showed superior EA prevention over fentanyl and propofol.
Conclusions:
- Dexmedetomidine is an effective agent for preventing emergence agitation in children.
- It offers benefits in reducing pain and rescue drug requirements, despite minor increases in recovery times.
- Dexmedetomidine presents a favorable option for EA prevention, particularly when compared to propofol and fentanyl.
Background:
Emergence agitation (EA) is one of the most common postoperative complications in children. The purpose of this meta-analysis is to assess the effect of dexmedetomidine for preventing postoperative agitation in children.
Methods:
We searched the Cochrane Central Register of Controlled Trails, MEDLINE, and EMBASE. Randomized controlled trials were included. The following outcome measures were evaluated: incidence of EA, number of patients requiring rescue, time to eye-open, time to extubation, time to discharge from the postanesthesia care unit (PACU).
Results:
We analyzed 19 trials (1608 patients) that met the inclusion criteria. Compared with placebo, intravenous dexmedetomidine significantly reduced the incidence of EA [risk ratio (RR) 0.34, 95% confidence interval (CI) 0.25-0.44, P<0.00001). Dexmedetomidine also decreased the incidence of severe pain (RR 0.41, 95% CI 0.27-0.62, P<0.0001) and requirement of a rescue drug (RR 0.31, 95% CI 0.18-0.53, P<0.0001). However, compared with placebo, dexmedetomidine increased the time to eye-open by 0.98 min (P = 0.01) and the time to PACU discharge by 4.63 min (P = 0.02). Dexmedetomidine was also compared with midazolam, propofol, ketamine, and fentanyl, among others. No significant difference was found in the incidence of EA for most of these comparisons, with the exception of fentanyl and propofol, where dexmedetomidine was more beneficial.
Conclusions:
Dexmedetomidine was proved effective for preventing EA and for reducing severe pain and the requirement of rescue drugs. It slightly increased the time to eye-open and the time to PACU discharge. Dexmedetomidine was also more beneficial than propofol or fentanyl in preventing EA.
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