En route to the hospital, you intubate the patient. During your assessment of tube placement, you hear wheezing in the upper lung fields. What is most likely causing this wheezing?

An inhalation injury inferior to the glottis can result in wheezing and bronchospasm. An inhalation injury superior to the glottis can cause a hoarse voice and stridor. Inhalation of the byproducts of combustion can cause wheezing but this would still be classified as an inhalation injury to the lower airway.