Which of the following is the most common site of lodgement for foreign bodies in the larynx and trachea in children?

Explanation

## Laryngeal and Tracheal Foreign Body Lodgement Sites **Key Point:** The **subglottic region** is the most common site of lodgement for foreign bodies in the larynx and trachea in children, because it represents the narrowest part of the pediatric airway. ### Anatomical Basis In children, the larynx is funnel-shaped (as opposed to the cylindrical adult larynx). The subglottic region — bounded superiorly by the vocal cords and inferiorly by the lower border of the cricoid cartilage — is the narrowest point of the entire pediatric airway. Foreign bodies that pass through the glottic inlet tend to impact at this subglottic choke point. | Site | Pediatric Significance | Clinical Role | | --- | --- | --- | | Glottis (vocal cord level) | Entry point; not the narrowest | Foreign bodies pass through | | **Subglottic region** | **Narrowest point in children** | **Most common lodgement site** | | Anterior commissure | Variable; less common | Occasional lodgement | | Arytenoid level (posterior larynx) | Wider posteriorly | Uncommon lodgement | **High-Yield (Bailey & Love / Cummings Otolaryngology):** In children, the cricoid ring is the narrowest segment of the airway (subglottic level), unlike adults where the glottis is the narrowest. This is why endotracheal tubes in children do not require cuffs — the subglottis itself provides a natural seal. Foreign bodies exploit this same anatomical bottleneck. ### Clinical Pearl Foreign bodies lodging in the subglottic region present with **biphasic stridor**, **barking cough**, and **respiratory distress**. The presentation can mimic croup, but the history of sudden onset without prodromal illness is a key differentiator. **Common Misconception:** The glottis is often cited as the narrowest point, but this applies to adults. In the pediatric airway, the subglottic/cricoid level is narrower, making it the true choke point for inhaled foreign bodies. ### Management Implications Subglottic foreign bodies require urgent **direct laryngoscopy or rigid bronchoscopy** under general anesthesia with spontaneous ventilation. Positive-pressure ventilation risks pushing the foreign body distally into the bronchial tree. *Reference: Cummings Otolaryngology – Head and Neck Surgery, 7th ed.; Bailey & Love's Short Practice of Surgery, 27th ed.*