PE25.5 | Foreign Body Aspiration — Summary & Reflection

KEY TAKEAWAYS

Foreign body aspiration predominantly affects toddlers aged 6 months to 3 years, with the right main bronchus being the most common lodgement site due to its more vertical alignment. The three clinical phases — initial choking, asymptomatic interval, and delayed complication — are the cornerstone of diagnosis; the asymptomatic interval is the most dangerous trap for missed diagnosis. Organic FBs (especially peanuts) provoke rapid mucosal inflammation and demand urgent intervention. An inspiratory chest X-ray may appear normal; an expiratory or lateral decubitus film is essential to detect unilateral hyperinflation (ball-valve air-trapping). Immediate first-aid mandates age-appropriate technique: 5 back-blows + 5 chest thrusts for infants under 1 year (never abdominal thrusts); 5 back-blows + 5 abdominal thrusts for children over 1 year. Rigid bronchoscopy under general anaesthesia is the gold-standard definitive treatment. Prevention through caregiver education remains the most impactful public-health intervention.

REFLECT

Recall the opening scenario: the toddler who appeared well after a brief choking episode with peanuts, whose inspiratory X-ray looked normal. Knowing what you know now about the asymptomatic interval, the ball-valve mechanism, and the limitations of an inspiratory film — what would you do differently from the casualty officer in the scenario? How would you explain the risk to a family who insists the child is 'fine' and wants to take him home? Consider how you would communicate the concept of diagnostic suspicion to a worried but reassured parent, and reflect on how this case shapes your approach to any child with a history of witnessed choking — even one who looks well when you see them.