Emergence Delirium in Children

ED Basics - Defining the Disarray

• Definition: Emergence Delirium (ED): A transient state of agitation, confusion, crying/moaning, and non-purposeful activity during early recovery from general anesthesia.
• Incidence: Affects 10-80% of children; commonly 18-30% post-general anesthesia.
• Peak Age: Most frequent in preschool children, typically 2-5 years.
• Clinical Significance:
  • Causes significant distress (child, parents, staff).
  • ↑ Risk of self-injury (e.g., dislodging IVs, surgical site trauma).
  • Leads to parental dissatisfaction; may ↑ healthcare costs & prolong recovery.

⭐ ED is a common postanesthetic behavioral disturbance in preschool children, distinct from pain.

Risk Factors - Who Gets Agitated?

Multiple factors contribute. Categorized for clarity:

• Age (2-5 yrs), Anxiety (preoperative), ASD, prior ED, difficult Attitude (temperament).
• Pain (significant postoperative), Procedure type (ENT, ophthalmic, urologic).
• Sevoflurane & other volatiles, Sudden/Speedy emergence.

⭐ Sevoflurane anesthesia is a major independent risk factor for ED.

Diagnosis - Spotting the Storm

• Clinical Presentation: Sudden onset of:

  • Crying, thrashing, kicking
  • Inconsolability, irritability
  • Disorientation, confusion
  • Lack of eye contact, poor awareness
  • Non-purposeful, restless movements

• PAED Scale (Pediatric Anesthesia Emergence Delirium): Gold standard diagnostic tool.

  Item	Description	Score (0-4)
  1. Eye Contact	Makes eye contact with caregiver	0-4
  2. Purposeful Actions	Actions are purposeful	0-4
  3. Awareness	Aware of surroundings	0-4
  4. Restlessness	Restless, agitated	0-4
  5. Inconsolability	Inconsolable, crying	0-4

  • 5 items, each scored 0-4 (0=not at all, 4=extremely). Total 0-20.
  • ED likely if total score >12 (alternative cutoff >10).

⭐ The PAED scale is the most validated tool for diagnosing ED in children.

• Differential Diagnosis (Rule Out):
  • Pain (most common mimic)
  • Hypoxia (monitor SpO₂)
  • Hypoglycemia (esp. prolonged fasting)
  • Full bladder (check post-op)
  • Shivering (causes agitation)

Management - Calming the Chaos

• Prevention Strategies are Paramount:

  • Non-Pharmacological: Encourage parental presence at induction/emergence. Maintain a quiet PACU environment. Employ distraction techniques like videos or toys.
  • Pharmacological: Prophylactic administration of agents such as dexmedetomidine, propofol (e.g., at end of surgery), fentanyl, ketamine, clonidine, or midazolam can be effective. (Doses and timing are critical; adhere to established guidelines).

• Managing Active Emergence Delirium:

  1. Immediate Priority: Ensure Child's Safety. Prevent falls or self-injury during agitation.
  2. Critical Step: Rule Out Other Reversible Causes. Systematically check for and address hypoxia, hypercarbia, significant pain, hypoglycemia, or a full bladder.
  3. Implement Management Algorithm:

  ⭐ Dexmedetomidine is effective for both prevention and treatment of ED, often reducing severity and duration.

High‑Yield Points - ⚡ Biggest Takeaways

• Emergence Delirium (ED) is frequent in preschoolers (2-5 years), often linked to sevoflurane.
• Major risk factors: young age, preoperative anxiety, pain, and surgeries like adenotonsillectomy.
• Characterized by agitation, inconsolability, and non-purposeful movements post-anesthesia.
• Differentiate from pain, which is a primary confounder and requires treatment.
• Preventive strategies: premedication (midazolam, dexmedetomidine), opioids, propofol infusion.
• Management: Ensure safety, treat pain (fentanyl), consider dexmedetomidine or small-dose propofol.
• Use PAED scale for diagnosis and severity assessment of ED episodes in children post-surgery.