What is the purpose of the Valsalva maneuver?

• A. To improve vision
• B. To regulate internal body temperature
• C. To force air into the Eustachian tube
• D. To increase blood flow to the brain

Answer: (C)

The purpose of the Valsalva maneuver is to force air into the Eustachian tube, which helps equalize pressure in the middle ear. This technique is often used during situations where changes in altitude occur, such as during ascent or descent in an aircraft. When a pilot or passenger experiences pressure changes, such as when flying, the Eustachian tube may become blocked, leading to discomfort. By performing the Valsalva maneuver—by closing one’s mouth, pinching the nose, and blowing gently—it creates pressure that can help open the Eustachian tube, allowing air to flow in and equalize pressure, alleviating discomfort and potential hearing issues. Understanding this practical application is crucial for those involved in aviation and can significantly enhance passenger comfort during flights.