What should be paid attention to when practicing the nose pinch and blowing method?

Patient's question:

What should be noted when practicing the nose pinch and blowing method? Can it be done too forcefully, and what adverse reactions might it cause? Thank you

Doctor's answer:

Hello, the "Eustachian tube sniffing method" involves pinching your nose and blowing air to make the airflow enter the middle ear cavity through the Eustachian tube, which can improve the pressure inside and outside the tympanic cavity.
Advice: This method should be avoided when you have a cold, rhinitis, or have nasal discharge. This is because it can allow viruses and bacteria from the nasal cavity to infect the Eustachian tube, potentially blocking it. When performing the sniffing method, avoid excessive force and do not do it too frequently.
Doctor's inquiry: