A 2-year-old toddler is seen for croup (acute laryngotracheobronchitis). What observation would lead the nurse to suspect airway occlusion?

Choice A rationale Increasing nasal discharge is a common symptom of upper respiratory tract infections and does not specifically indicate a progression to airway occlusion in croup. While it contributes to overall respiratory distress, it is not the most critical sign of a life-threatening compromise of the airway in this condition. Choice B rationale A harsher cough, often described as a "barking" cough, is a characteristic symptom of croup caused by inflammation of the larynx, trachea, and bronchi. While concerning, it is not the most reliable indicator of impending airway occlusion. The cough may be present throughout the illness without a complete occlusion. Choice C rationale An increasing respiratory rate is an early compensatory mechanism in response to airway obstruction and hypoxia. While it indicates respiratory distress, it is not the most significant sign of impending airway occlusion. It can occur with many respiratory issues and is often a precursor to more severe signs. Choice D rationale A toddler stating they are tired and wanting to sleep is a serious and late sign of hypoxia. This indicates that the child is becoming fatigued from the increased work of breathing, leading to decreased respiratory effort. This mental status change signals that the body's compensatory mechanisms are failing, and respiratory failure and airway occlusion are imminent.