Emergence from anesthesia in pediatric patients is a physiologically and behaviorally vulnerable transition that requires deliberate perioperative planning. During awakening, airway tone, ventilatory drive, consciousness, and sensory processing are progressively restored. This period may be complicated by emergence delirium (ED), a potential complication following general anesthesia and surgery, particularly for young children. ED is characterized by agitation, disorientation, inconsolability, and lack of purposeful interaction (1). Evidence-based best practices for smooth and safe emergence from anesthesia in pediatric patients are of significant clinical interest for improving patient outcomes.
The pathophysiology of ED is multifactorial, reflecting both developmental neurobiology and anesthetic pharmacodynamics. Preschool-aged children demonstrate limited cortical integration and reduced capacity for contextual orientation during abrupt transitions from unconsciousness to wakefulness (2). With volatile anesthetics such as sevoflurane, rapid elimination due to low blood–gas solubility may result in sudden restoration of consciousness before higher cortical processing is fully coordinated. This can contribute to disorientation during early recovery (3).
A Cochrane review demonstrated higher rates of emergence agitation with sevoflurane compared to some other common anesthetic techniques, supporting anesthetic selection as a modifiable risk factor. In contrast, propofol-based total intravenous anesthesia (TIVA) or administration of propofol at the conclusion of volatile anesthesia has been associated with a lower incidence of ED, possibly by moderating cortical excitability during reawakening (3).
Preoperative anxiety further increases ED risk and may contribute to heightened sympathetic activation that persists into recovery. Accordingly, best practices for pediatric emergence should include preventive strategies prior to the induction of anesthesia. Behavioral preparation, parental presence when appropriate, and selective anxiolytic use may mitigate perioperative stress; however, pharmacologic premedication alone does not reliably prevent ED, highlighting the need for a comprehensive approach (3).
Both airway physiology and analgesic strategy are integral to ensuring a safe emergence. For example, tonsillectomy and adenoidectomy are common procedures for the pediatric population. These patients often have obstructive sleep apnea, a condition that increases susceptibility to opioid-induced respiratory depression and postoperative airway obstruction. During emergence, when airway tone and ventilatory control are not yet stable, this vulnerability necessitates cautious opioid dosing and multimodal analgesia (4). Dexmedetomidine has demonstrated particular utility in this setting. In children undergoing adenotonsillectomy, an intraoperative dexmedetomidine infusion reduced emergence agitation and postoperative analgesic requirements without significantly prolonging recovery time (4). By attenuating sympathetic activation while preserving respiratory drive, dexmedetomidine promotes respiratory safety and behavioral stability.
It is clinically important to differentiate pain-related agitation from true emergence delirium because management strategies differ. Pain usually improves with additional analgesia, but delirium reflects a disturbance in awareness that may persist despite adequate pain control. Misinterpreting the two conditions can lead to the unnecessary administration of opioids, which increases the risk of respiratory depression without resolving agitation. Validated tools like the PAED scale improve diagnostic clarity and support targeted management by providing additional analgesia when pain is present and reserving sedative therapy for confirmed delirium (5).
Due to the risk of ED, anesthesia emergence is a critical period following surgery in pediatric patients, and accordingly, much research and clinical review has gone into establishing best practices during this period. Developmental considerations, anesthetic technique, airway risk assessment, and a structured evaluation process are key to optimizing emergence. The evidence supports minimizing abrupt volatile emergence when feasible and employing multimodal and opioid-sparing strategies in high-risk populations. Additionally, it supports using validated assessment instruments to guide management. By planning ahead and intervening as needed, clinicians can improve the safety and quality of pediatric recovery from anesthesia.
References
1. Sikich N, Lerman J. Development and psychometric evaluation of the pediatric anesthesia emergence delirium scale. Anesthesiology. 2004;100(5):1138-1145. doi:10.1097/00000542-200405000-00015
2. Voepel-Lewis T, Malviya S, Tait AR. A prospective cohort study of emergence agitation in the pediatric postanesthesia care unit. Anesth Analg. 2003;96(6):1625-1630. doi:10.1213/01.ANE.0000062522.21048.61
3. Costi D, Cyna AM, Ahmed S, et al. Effects of sevoflurane versus other general anaesthesia on emergence agitation in children. Cochrane Database Syst Rev. 2014;2014(9):CD007084. Published 2014 Sep 12. doi:10.1002/14651858.CD007084.pub2
4. Patel A, Davidson M, Tran MC, et al. Dexmedetomidine infusion for analgesia and prevention of emergence agitation in children with obstructive sleep apnea syndrome undergoing tonsillectomy and adenoidectomy. Anesth Analg. 2010;111(4):1004-1010. doi:10.1213/ANE.0b013e3181ee82fa
5. Mason KP. Paediatric emergence delirium: a comprehensive review and interpretation of the literature. Br J Anaesth. 2017;118(3):335-343. doi:10.1093/bja/aew477
