Patulous eustachian tube (PET) occurs when the eustachian tube, which connects the middle ear to the back of the throat, stays open. Though rare, it is not a serious medical condition. It does, ...

The Eustachian tube, which connects the middle ear to the back of the throat, helps equalise air pressure, but sudden changes in altitude can cause it to function inefficiently, leading to ...

[16] Line drawing showing eustachian tube orifice in nasopharynx in relation to other structures in that area. Under normal circumstances, the eustachian tube is closed, and opens only when the ...