This should clear the Eustachian tubes and keep them open for the duration of the flight.
Eustachian tubes connect the middle ears to the back of the throat.
If the eustachian tubes become blocked, pressure changes cause pain in the ear.
The opening of the Eustachian tube is also within the middle ear.
In children, problems with the eustachian tubes can lead to difficulty hearing.
Moreover, the opening of the Eustachian tube into the middle ear is in a high position.
The move forces air through the Eustachian tube to the middle ear cavities.
Their own voice may also sound lower to other people, because the trachea has more volume when the Eustachian tube is open.
In some cases, people need surgery for a blocked eustachian tube.
However, it does not disappear and eventually forms the eustachian tube.
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