An Examination of Variables Involved in Tympanometric Assessment of Eustachian Tube Function in Adults

1979 ◽  
Vol 44 (3) ◽  
pp. 388-396 ◽  
Author(s):  
Melinda W. Seifert ◽  
Michael F. Seidemann ◽  
Gregg D. Givens
Keyword(s):  
Data Collection ◽  
Eustachian Tube ◽  
Clinical Data ◽  
Relative Efficiency ◽  
Eustachian Tube Function ◽  
Ventilatory Function ◽  
Experimental Conditions ◽  
Tube Function ◽  
Normal Adults

Eustachian tube function was assessed tympanometrically in a group of normal adults. A pressure-swallow technique of assessing Eustachian tube ventilatory function was administered with positive and negative induced pressures in the range of ± 200 mm to ± 400 mm H 2 O. This study indicated the relative efficiency of measurement of Eustachian tube function under each of the experimental conditions. Recommendations of procedures for further clinical data collection are presented.

Eustachian Tube Function and Middle Ear Barotrauma Associated with Extremes in Atmospheric Pressure

1996 ◽  
Vol 105 (11) ◽  
pp. 887-892 ◽  
Author(s):  
Takashi Miyazawa ◽  
Hiromi Ueda ◽  
Noriyuki Yanagita
Keyword(s):  
Hyperbaric Oxygen ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Atmospheric Pressure ◽  
Eustachian Tube Function ◽  
Tube Function ◽  
Hyperbaric Exposure ◽  
Normal Adults ◽  
Hyperbaric Conditions

Eustachian tube (ET) function was studied by means of sonotubometry and tubotympano-aerodynamography (TTAG) prior to and following exposure to hypobaric or hyperbaric conditions. Forty normal adults were subjected to hypobaric pressure. Fifty adults who underwent hyperbaric oxygen (HBO) therapy also were studied. Following hypobaric exposure, 14 of 80 ears (17.5%) exhibited middle ear barotrauma. Following hyperbaric exposure, 34 of 100 ears (34%) exhibited middle ear barotrauma. Dysfunction of the ET, characterized by altered active and passive opening capacity, was more prevalent following exposure to extremes in atmospheric pressure compared to baseline. The ET function, which was impaired after the first HBO treatment, improved gradually over the next 2 hours. Overall, however, ET function was worse after the seventh treatment The patients who developed barotrauma exhibited worse ET function prior to hypobaric or hyperbaric exposure. Thus, abnormal ET function can be used to predict middle ear barotrauma prior to exposure to hypobaric or hyperbaric atmospheric pressure.

EVALUATION OF NONINVASIVE EUSTACHIAN TUBE FUNCTION TESTS IN NORMAL ADULTS

1988 ◽  
Vol 98 (6) ◽  
pp. 655???658 ◽  
Author(s):  
TIMOTHY P. MCBRIDE ◽  
CRAIG S. DERKAY ◽  
MICHAEL J. CUNNINGHAM ◽  
WILLIAM J. DOYLE
Keyword(s):  
Eustachian Tube ◽  
Eustachian Tube Function ◽  
Function Tests ◽  
Tube Function ◽  
Normal Adults

Eustachian Tube Ventilatory Function in Relation to Cleft Palate

1975 ◽  
Vol 84 (3) ◽  
pp. 333-338 ◽  
Author(s):  
Charles D. Bluestone ◽  
Quinter C. Beery ◽  
Erdem I. Cantekin ◽  
Jack L. Paradise
Keyword(s):  
Cleft Palate ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Normal Subjects ◽  
Eustachian Tube Function ◽  
Ventilatory Function ◽  
Tubal Function ◽  
Tube Obstruction ◽  
Tube Function ◽  
Palate Repair

The ventilatory function of the Eustachian tube was assessed in a group of infants and children with cleft palate, some of whom had received palatal repair. Those whose palates had been repaired were better able, in general, to equilibrate applied positive middle ear pressures than were those with open clefts. In many of the patients whose palates had been repaired, the results of Eustachian tube function studies were similar to those in normal subjects. Differences in Eustachian tube ventilatory function are assumed to be related to differences in tubal compliance. Excessive compliance probably results in, or exaggerates, functional Eustachian tube obstruction. Improvement in tubal function following palate repair is probably related to factors resulting in greater tubal stiffness.

Study of Eustachian Tube Function in Normal Adults And Those With Middle Ear Disease

2017 ◽  
Vol 16 (05) ◽  
pp. 76-80
Author(s):  
Prof. Dr. V. Saravanan MS ◽  
Dr.R.V. Kumar ◽  
Dr.M. Vasudevan ◽  
Dr.Vineetha. k
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Eustachian Tube Function ◽  
Tube Function ◽  
Middle Ear Disease ◽  
Normal Adults

The effect of concurrent nasal surgery on the eustachian tube function and myringoplasty outcomes

2021 ◽  
Vol 42 (3) ◽  
pp. 102926
Author(s):  
ZhiGuo OuYang ◽  
Zihan Lou ◽  
Zhengcai Lou ◽  
Kangfen Jin ◽  
Junzhi Sun ◽  
...  
Keyword(s):  
Eustachian Tube ◽  
Eustachian Tube Function ◽  
Nasal Surgery ◽  
Tube Function

Sonometric Evaluation of Eustachian Tube Function Using Broadband Stimuli

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 178-184 ◽  
Author(s):  
Krishna G. Murti ◽  
Erdem I. Cantekin ◽  
Richard M. Stern ◽  
Charles D. Bluestone
Keyword(s):  
Eustachian Tube ◽  
A Priori ◽  
Broadband Noise ◽  
Ear Canal ◽  
Experimental Conditions ◽  
Diagnostic Significance ◽  
Tube Function ◽  
Series Of Experiments ◽  
Sound Conduction ◽  
Clinical Instrument

New measurements of acoustical transmission through the eustachian tube (ET) have been obtained in a series of experiments directed toward the development of a clinical instrument to assess ET function behind an intact tympanic membrane (TM). Using a sound conduction method, a sound source was placed in one nostril, and the acoustical energy that was transmitted through the ET was measured by a microphone placed in the ear canal. The present study used a broadband noise as the acoustical stimulus, in contrast to the tonal stimuli employed in previous investigations. This stimulus was chosen because it is believed to reduce the variability in the data due to intersubject differences in the acoustics of the nasopharynx and ET, and to avoid any a priori assumptions concerning the specific frequencies that would be of greatest diagnostic significance. Averaged spectra of the sound transmitted to the ear canal were obtained for three experimental conditions: acoustical source present during subject swallowing, source present with no swallowing, and subject swallowing with source absent. A Bayesian classification scheme based on the statistics of these spectra was used in classifying subjects into one of two possible categories, normal and abnormal ET function. A comparison was made between sonometric classification and classification based on a tympanometric ET function test. Correlation between the two methods was 87.1%.

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