Which barotrauma is most commonly encountered during altitude changes?

• A. Otic (middle ear) barotrauma
• B. Pulmonary barotrauma
• C. Sinus barotrauma
• D. Dental barotrauma

Answer: (A)

The main idea is that pressure changes during altitude shifts affect air-filled spaces that must equalize with the surrounding air. The middle ear is directly exposed to ambient pressure and relies on the Eustachian tube to balance pressure with the throat. When this tube can’t open properly, middle-ear pressure builds up, pushing on the tympanic membrane and causing pain, fullness, and possible hearing changes. Because this is the most direct and common route for pressure to equalize during flight, otic (middle-ear) barotrauma is the most commonly encountered type with altitude changes. Sinus barotrauma can happen if the sinus openings are blocked, but it’s less common in routine altitude changes. Pulmonary barotrauma relates to the lungs and is more typical in diving or ventilated scenarios, while dental barotrauma is rare and not a typical outcome of altitude change.