Which option is NOT a prevention method for middle ear squeeze?

• A. Valsalvas
• B. Rinsing ears with water
• C. Ascending a few feet clearing then continuing descent
• D. Staying ahead of equalization

Answer: (B)

Prevention hinges on keeping the middle ear pressure balanced with the surrounding water as you change depth. Middle ear squeeze occurs when ambient pressure changes faster than the Eustachian tube can equalize, so you want to equalize early and often and not push through pressure differences. The reliable methods are practicing equalization techniques like the Valsalva maneuver, staying ahead of the pressure change by pausing to clear your ears before continuing descent, and descending with the ability to clear and equalize. Rinsing ears with water does not affect middle ear pressure and can introduce moisture or infection, so it does not prevent squeeze.