Effect of caudally administered clonidine on sevoflurane induced emergence agitation-A randomized trial

Area of Science:

• Pediatric Anesthesiology
• Pain Management
• Pharmacology

Background:

• Emergence agitation (EA) is a common adverse event in children following sevoflurane anesthesia.
• Caudal epidural block (CEB) is a regional anesthesia technique used in pediatric surgery.
• Sevoflurane is a widely used inhalational anesthetic agent in pediatric populations.

Purpose of the Study:

• To evaluate the efficacy of caudal epidural block (CEB) with ropivacaine and clonidine in reducing sevoflurane-induced emergence agitation (EA) in children.
• To assess the incidence of EA, respiratory depression, and hemodynamic changes as secondary outcomes.
• To compare the effectiveness of ropivacaine with and without clonidine for EA prevention.

Main Methods:

• A randomized study involving 90 children aged 1-8 years undergoing infraumbilical surgery.
• Children were allocated to receive either ropivacaine 0.2% with saline or ropivacaine 0.2% with clonidine (2 mcg/kg) via CEB.
• Emergence agitation was assessed using the Modified Richmond Agitation Scale post-operatively.

Main Results:

• The incidence of EA was significantly lower in the ropivacaine-clonidine group (28.5% at 15 min) compared to the ropivacaine-saline group (83.3% at 15 min).
• No significant respiratory depression was observed in either group.
• A clinically insignificant decrease in heart rate was noted in the clonidine group, with no adverse events reported.

Conclusions:

• The addition of clonidine (2 mcg/kg) to ropivacaine 0.2% in CEB provides a significant benefit in reducing sevoflurane-induced EA in children.
• This combination therapy is a safe and effective strategy for managing EA in pediatric patients undergoing lower abdominal surgery.
• Ropivacaine with clonidine offers an advantage over ropivacaine alone for preventing emergence agitation.