Related Experiment Video
Updated: Mar 27, 2026

Implantation of Electroencephalogram and Electrocardiogram Telemetry Devices in Neonatal Rabbit Kits
Published on: February 28, 2025
Effectiveness of dexmedetomidine for emergence agitation in infants undergoing palatoplasty: a randomized controlled
Aiji Boku1, Hiroshi Hanamoto1, Aiko Oyamaguchi1
1Department of Dental Anesthesiology, Graduate School of Dentistry, Osaka University, Osaka, Japan.
Insights
Dexmedetomidine (Dex) significantly reduced emergence agitation (EA) and pain scores in infants after sevoflurane anesthesia during palatoplasty. This suggests Dex offers a safer recovery for pediatric patients undergoing this procedure.
Area of Science:
- Pediatric Anesthesiology
- Pharmacology
Background:
- Emergence agitation (EA) is common in infants following sevoflurane (Sev) anesthesia.
- Palatoplasty in infants often requires general anesthesia, increasing the risk of EA.
Purpose of the Study:
- To evaluate the efficacy of dexmedetomidine (Dex) in reducing the incidence and severity of EA in infants undergoing palatoplasty.
- To compare EA and pain scores between infants receiving Dex and those receiving a placebo.
Main Methods:
- A prospective randomized clinical trial involved 70 infants (10-14 months) undergoing palatoplasty.
- Infants were randomized to receive either Dex (6 μg/kg/h then 0.4 μg/kg/h) or saline.
- Emergence agitation and pain were assessed using validated scales at multiple time points post-extubation.
Main Results:
- The Dex group exhibited significantly lower EA and pain scores compared to the saline group.
- These reductions were observed consistently from extubation up to 120 minutes post-arrival in the PACU.
Conclusions:
- Dexmedetomidine administration effectively reduces emergence agitation and pain in infants after sevoflurane anesthesia for palatoplasty.
- Dex provides a safe and satisfactory recovery profile for pediatric patients undergoing this surgical procedure, with no adverse effects noted.
Objectives:
In infants, there is a high incidence of emergence agitation (EA) after sevoflurane (Sev) anesthesia. This study aimed to test the hypothesis that dexmedetomidine (Dex) administration would reduce the incidence and severity of EA after Sev-based anesthesia in infants undergoing palatoplasty.
Methods:
A prospective randomized clinical trial was conducted with 70 patients undergoing palatoplasty, aged 10-14 months. Infants were randomly allocated into two groups: Dex (n=35) and saline (n=35). In the Dex group, Dex (6 μg/kg/h) was administered approximately 10 min before the end of the surgery for 10 min, followed by 0.4 μg/kg/h until 5 min after extubation. In the saline group, an equivalent amount of saline was administered in a similar manner. After the surgery, patients were transferred to the postanesthetic care unit (PACU). The infant's behavior and pain were assessed with scoring system for EA (5-point rating scale) and pain scale (PS; 10-point rating scale), respectively. EA and PS were estimated at six time points (after extubation, leaving the operating room, 0, 30, 60, and 120 min after arrival in PACU).
Results:
EA and PS scores were significantly lower in the Dex group than in the saline group from extubation to 120 min after arrival in PACU.
Conclusions:
Dex administration has the advantage of a reduced EA and PS without any adverse effects. Dex provided satisfactory recovery in infants undergoing palatoplasty.
Related Concept Videos
Parenteral Anesthetics: Overview
Depolarizing Blockers: Pharmocokinetics
Skeletal Muscle Relaxants: Therapeutic Uses
Skeletal Muscle Relaxants: Adverse Effects
Unlike...
Sedatives and Hypnotics Drugs: Miscellaneous Agents
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Drug Delivery: Enteral Route

