Why should people receiving HBO treatment do actions regulating the pressure of Eustachian tube?
Human ear includes outer ear and inner ear which are separated by tympanic membrane. Outer ear is linked with outer environment through external auditory canal. Inner ear is linked with outer environment through Eustachian tube. Normally, Eustachian tube is closed. When pressure is applied, the higher external pressure will increase the pressure on external auditory canal. If the pressure in inner ear doesnt increase, the tympanic membrane will cave in under pressure and the person will feel ear stuffiness, distension and ache. In order to avoid ear ache, all people who are going to enter HBO chamber for treatment must do actions regulating the pressure of Eustachian tube to open the Eustachian tube. In this way, higher external pressure will enter inner ear via Eustachian tube to balance the pressure on both sides of tympanic membrane so that the inner ear wont feel unwell. Therefore, all people receiving treatment in the chamber must be the ones with unobstructed Eustachian tube (wit
