A 9-month-old infant has cough, rhinorrhea, wheezing, and low-grade fever in winter. Oxygen saturation is 96% on room air, and feeding is slightly

Question

A 9-month-old infant has cough, rhinorrhea, wheezing, and low-grade fever in winter. Oxygen saturation is 96% on room air, and feeding is slightly reduced. Chest examination shows diffuse wheezes and crackles. Which of the following is the most likely diagnosis?

Accepted Answer

Bronchiolitis

Answer

Bacterial tracheitis

Answer

Cystic fibrosis

Answer

Epiglottitis

Answer

Foreign body aspiration

Bronchiolitis — USMLE Step 3 MCQ

A 9-month-old infant has cough, rhinorrhea, wheezing, and low-grade fever in winter. Oxygen saturation is 96% on room air, and feeding is slightly reduced. Chest examination shows diffuse wheezes and crackles. Which of the following is the most likely diagnosis?