Hans Wilhelm Pau1, Uwe Sievert, Tino Just, Jacob Sadé. 1. ENT Department, Medical School, University of Rostock, Doberaner Strasse 137-9, Rostock, Germany. hans-wilhelm.pau@med.uni-rostock.de
Abstract
CONCLUSION: By means of a direct, though non-invasive experiment on healthy humans we could demonstrate that middle ear (ME) pressure decreases when the eustachian tube (ET) does not open. Thus with a very simple method the basic theory of continuous gas loss from the ME into the circulation and the replenishment of the loss through the ET could be validated. OBJECTIVES: To record changes in ME pressure over a period of time in normal human ears, while the ET is kept closed. SUBJECTS AND METHODS: On-line tympanometry was carried out in three subjects, who refrained from swallowing for 20-120 min. RESULTS: During the time when the ET was kept closed by refraining from swallowing, tympanometric monotonous pressure decrease was recorded. Once the tested subject could not refrain from swallowing any longer and swallowed again, ME pressure equalized immediately.
CONCLUSION: By means of a direct, though non-invasive experiment on healthy humans we could demonstrate that middle ear (ME) pressure decreases when the eustachian tube (ET) does not open. Thus with a very simple method the basic theory of continuous gas loss from the ME into the circulation and the replenishment of the loss through the ET could be validated. OBJECTIVES: To record changes in ME pressure over a period of time in normal human ears, while the ET is kept closed. SUBJECTS AND METHODS: On-line tympanometry was carried out in three subjects, who refrained from swallowing for 20-120 min. RESULTS: During the time when the ET was kept closed by refraining from swallowing, tympanometric monotonous pressure decrease was recorded. Once the tested subject could not refrain from swallowing any longer and swallowed again, ME pressure equalized immediately.
Authors: Carsten V Dalchow; M Loewenthal; N Kappo; F Jenckel; B B Loerincz; R Knecht Journal: Eur Arch Otorhinolaryngol Date: 2015-03-19 Impact factor: 2.503
Authors: Bin Yang; Cong Tian; Zhi-guang Zhang; Feng-chan Han; Rami Azem; Heping Yu; Ye Zheng; Ge Jin; James E Arnold; Qing Y Zheng Journal: PLoS One Date: 2011-07-27 Impact factor: 3.240