user172 -
My mistake was in forcing the rinse when my sinuses were completely blocked. That’s what forced the water through the eustachian tubes. Totally blocked sinuses are rare, and I was desperate. I have poor immune function due to chronic lymphocytic leukemia. COVID itseld lasted at least 21 days, and I got a secondary bacterial infection.
I still use the rinse.
At first, no amount of effort restored normal function - yawning, swallowing, Toynbee, Valsalva did not work.
The constant heartbeat made it hard to sleep, and it was really hard to hear people around me, even with HAs turned up max. A few months later, it would spontaneously close, based on returned mid and high hearing, reduced volume of my own voice, and lack of heartbeat.
The audiologist documented the additional hearing loss, and recommended against adjusting the HAs. I saw the ENT monthly for 3 months. The 3rd month was better - intermittent heartbeat, own voice, poor hearing in mid to high. After 6 months it was gone.
This was an extreme case. As I said, my immune function is poor, and I misused the nasal rinse. I want to emphasize that if you cannot breath through your nose, do not force water up your nostrils in an attempt to open it.
I find that both doctors (primary care, especially) and patiens can confuse ETD as a generic term with Patulous Eustachian Tube. A blocked eustachian tube is much more common than a tube stuck open, I think. I did some research on Patulous Eustachian Tube (PET) that others might find useful:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8947718/
Revisiting the Diagnostic Performance of the Modified Nine-Step Test for Obstructive and Patulous Eustachian Tube Dysfunction
Diagnostics (Basel). 2022 Mar; 12(3): 732.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7590401/
Management of Patulous Eustachian Tube
JMA J. 2020 Apr 15; 3(2): 101–108.