Possible unusual presentation of opioid side effect in a child: a case report

Area of Science:

• Pediatric intensive care
• Pediatric cardiology
• Neuroscience

Background:

• Atypical presentations in the Pediatric Intensive Care Unit (PICU) require a high index of suspicion for timely intervention.
• Congenital heart disease (CHD) patients undergoing cardiac repair are susceptible to various post-operative complications.
• Sedation and analgesia management in critically ill children can be challenging, with potential for complex adverse effects.

Observation:

• A 14-month-old girl with CHD presented with persistent agitation, irritability, hysteria, and delirium after cardiac repair, unresponsive to standard interventions.
• Common causes of altered mental status, including pain, low cardiac output syndrome (LCOS), and opioid-related issues (toxicity, withdrawal), were systematically excluded.
• Naloxone, an opioid antagonist, was administered as a last resort after conventional treatments failed.

Findings:

• The administration of naloxone resulted in the immediate and complete reversal of the patient's agitated and delirious state.
• This rapid improvement strongly suggests that opioid-induced neurotoxicity (OIN) was the underlying cause of the atypical presentation.
• The case highlights the importance of considering OIN in the differential diagnosis of unexplained neurological symptoms in pediatric patients receiving opioids.

Implications:

• This case underscores the critical need to consider opioid-induced neurotoxicity (OIN) in pediatric patients with unexplained agitation and delirium post-cardiac surgery.
• Naloxone should be considered as a diagnostic and therapeutic trial in similar clinical scenarios, even after ruling out other common causes.
• Further research into the recognition and management of OIN in critically ill children is warranted to improve patient outcomes.