Patulous eustachian tube

Patulous eustachian tube also known as patent Eustachian tube (PET) is a rare physiological disorder of the eustachian tube, in which a normally closed Eustachian tube stays open intermittently. PET was first described by Schwartze 1864 when he noted movement of an atrophic tympanic membrane in synchronous with respiration. Jago described it fully in 1867. […]