Ear barotrauma can result from exposure to high air pressure.

• A. False
• B. True
• C. Only during diving
• D. Caused by high temperature

Answer: (B)

Ear barotrauma occurs when there is a mismatch between the pressure outside the ear and the pressure inside the middle ear due to a rapid or large change in ambient pressure. When external air pressure is high, it pushes on the eardrum and middle ear. If the Eustachian tube can’t equalize that pressure quickly enough (swallowing, yawning, or Valsalva help), the tympanic membrane can be stretched or injured, causing pain, hearing changes, or even perforation. This can happen in any situation with a rapid increase in ambient pressure, not just diving, so the statement is true. High temperature does not cause ear barotrauma.