The pediatric airway has several anatomical and physiological differences that significantly impact airway management. The larynx in children is positioned higher and more anterior in the neck than in adults, typically located around the level of the C4 vertebrae at birth, gradually descending to the adult level (C6) by the age of six. This anatomical variation makes direct visualization during laryngoscopy more challenging, requiring a skilled and nuanced approach to intubation.
Additionally, the pediatric larynx is more compliant and funnel-shaped, with the narrowest point at the subglottic region, unlike the adult airway, where the narrowest point is at the glottis. This funnel shape is due to the softer, more flexible cartilage and a smaller cricothyroid membrane. The cricoid cartilage, the only complete cartilaginous ring in the pediatric airway, is relatively narrow and elliptical, presenting challenges when placing an endotracheal tube. An endotracheal tube that passes easily through the vocal cords may encounter resistance at the cricoid ring, necessitating smaller tube sizes or specific placement techniques to avoid trauma.
