Persistent Inspiratory Stridor in Pediatrics — 3yo Child | Pediatric Respiratory | SMLE Q#611
SMLE Question #611
Pediatrics
Pediatric Respiratory
Last updated: February 2026
A 3-year-old boy has 2 days of barking cough, hoarse voice, and inspiratory stridor worse at night. He is fully immunized and has no history of choking. His stridor and work of breathing persist after nebulized epinephrine and oral dexamethasone. He has suprasternal and intercostal retractions with persistent inspiratory stridor, without drooling or tripod positioning. The clinician suspects an alternative cause of upper airway obstruction. What is the most important investigation to be done at this point?
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