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what is Politzerization source(wikipedia)

Politzerization, also called the Politzer maneuver or method, is a medical procedure that involves inflating the middle ear by blowing air up the nose during the act of swallowing. It is often performed to reopen the Eustachian tube and equalise pressure in the sinuses.
The procedure was derived from a medical experiment first performed by Ádám Politzer of Vienna that involved studying the air movement through the Eustachian tube by connecting a manometer to the external auditory canal meatus and

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