Delayed ventricular fibrillation following blunt chest trauma in a 4-year-old child

Area of Science:

• Pediatric Emergency Medicine
• Cardiology
• Trauma Care

Background:

• Blunt chest trauma in pediatric motor vehicle accidents can lead to cardiac emergencies.
• Commotio cordis, a sudden cardiac arrest due to blunt impact, typically occurs within seconds of trauma.

Observation:

• A 4-year-old pedestrian sustained blunt chest trauma.
• The patient developed ventricular fibrillation (VF) 2 hours after the injury.
• Cardiac pathology, electrolyte, and metabolic disorders were excluded as causes.

Findings:

• The delayed onset of VF (2 hours post-trauma) excluded a diagnosis of commotio cordis.
• A plausible etiological link between the chest trauma and the late-onset VF was identified.

Implications:

• This case highlights the possibility of delayed ventricular fibrillation following blunt chest trauma in children.
• It underscores the importance of considering trauma as a potential cause of cardiac arrhythmias, even with a delayed presentation.
• Further investigation into the mechanisms of trauma-induced delayed VF is warranted.