Question

The Valsalva technique is helpful in relieving which problem?

• A. Flying fatigue
• B. Barotrauma
• C. Ear block
• D. Hypoxia

Hint:

To easily remember: Ear block is the physical blocking of the air passage, and the Valsalva maneuver acts like a gentle manual pump to force that passage open and equalize pressure.

Answer 1

The Correct Option is C

Step 1: Understanding Middle-Ear Pressure Changes during Flight:
As an aircraft climbs or descends, atmospheric pressure changes rapidly. The middle-ear cavity is an air-filled space separated from the external environment by the delicate eardrum (tympanic membrane). To keep pressure equalized across the eardrum, air must travel through the Eustachian tube, which connects the middle ear to the back of the throat (nasopharynx).

Step 2: Describing "Ear Block" and Pressure Trapping:
During rapid descent, the ambient atmospheric pressure increases. If the Eustachian tube is blocked (due to a cold, allergies, or mucosal swelling), air cannot enter the middle ear. The higher external pressure pushes the eardrum inward, causing pain, muffled hearing, and a feeling of fullness. This condition is physically termed an Ear Block (or otic barotrauma).

Step 3: Explaining the Valsalva Technique:
To resolve this pressure differential, pilots and aircrew use the Valsalva technique:
• Close the mouth and pinch both nostrils shut with the fingers.
• Exhale gently but steadily against these closed airways.
• This action increases the air pressure in the pharynx, forcing the Eustachian tubes open and pushing air into the middle ear to equalize pressure, which instantly relieves the "Ear block." While Option (B) "Barotrauma" is a general category for pressure-induced injuries, the specific, everyday physiological issue commonly termed and encountered in air training is "Ear block," making (C) the most direct and accurate option in the syllabus.