Eustachian Tube Function in Children with Normal Middle Ear and with Tympanic Membrane Retraction

2013 ◽  
Vol 149 (2_suppl) ◽  
pp. P224-P225
Author(s):  
Inesangela Canali ◽  
Leticia S. Rosito ◽  
Sady S. Da Costa ◽  
Bruno Siliprandi ◽  
Claudia Giugno
Keyword(s):  
Tympanic Membrane ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Eustachian Tube Function ◽  
Tube Function ◽  
Tympanic Membrane Retraction

Eustachian Tube Function and Retraction of the Tympanic Membrane

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 65-66 ◽  
Author(s):  
Jörgen Holmquist ◽  
Ulf Renvall ◽  
Pål Svendsen
Keyword(s):  
Tympanic Membrane ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Air Pressure ◽  
Eustachian Tube Function ◽  
Present Material ◽  
Pressure Equalization ◽  
Air Volume ◽  
Middle Ear Cholesteatoma ◽  
Tube Function

The medial displacement of the tympanic membrane or the retracted tympanic membrane is a common clinical finding. Also, retractions are looked upon as the precursor of middle ear cholesteatoma. In current otologic literature there seems to be some dispute whether the retractions of the tympanic membrane are caused by negative intratympanic air pressure or by shrinkage of middle ear adhesions pulling the tympanic membrane or part of it medially. In this study only ears with posterior/superior retractions of the tympanic membrane were investigated. Tympanometry revealed that only 33% of the ears did have middle ear pressure within ± 100 mm H2O. After insertion of a polyethylene tube through the tympanic membrane, the eustachian tube function was tested using the air pressure equalization technique. None of the ears could change the negative air pressure upon swallowing. Planometric measurements on the x-ray of the mastoid air cell system of the present material deviate from those of a normal material, indicating a significantly smaller air volume in the present material. It may be concluded that dysfunction of the eustachian tube and a small air volume of the mastoid are characteristic features of an ear with posterior/superior retraction of the tympanic membrane.

A New Impedance Method for Measuring Middle Ear Mechanics and Eustachian Tube Function

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 207-210 ◽  
Author(s):  
Alf Ivarsson
Keyword(s):  
Tympanic Membrane ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Pressure Chamber ◽  
Impedance Method ◽  
Neutral Position ◽  
Eustachian Tube Function ◽  
Small Pressure ◽  
Middle Ear Mechanics ◽  
Tube Function

The main principle of this new impedance method is a continuous recording of changes in tympanic membrane compliance in relation to its neutral position during changes in pressure, using a small pressure chamber. The subject sitting in the chamber can be placed in the recumbent position by rotation of the chamber. The working principles of the impedance method are: a servosystem regulates displacement of the loudspeaker membrane in order to keep the sound pressure in the external ear canal constant, independent of tympanic membrane compliance. From this recording it is possible to isolate tympanic membrane compliance during changes in intratympanic pressure as well as during ambient pressure changes. The results indicate that the new regulated impedance method combined with the small pressure chamber should be useful in routine clinical examination of middle ear mechanics and eustachian tube function.

scholarly journals Assessment of Eustachian tube function in patients with tympanic membrane retraction and in normal subjects

2017 ◽  
Vol 83 (1) ◽  
pp. 50-58 ◽  
Author(s):  
Inesângela Canali ◽  
Letícia Petersen Schmidt Rosito ◽  
Bruno Siliprandi ◽  
Cláudia Giugno ◽  
Sady Selaimen da Costa
Keyword(s):  
Tympanic Membrane ◽  
Eustachian Tube ◽  
Normal Subjects ◽  
Eustachian Tube Function ◽  
Tube Function ◽  
Tympanic Membrane Retraction

Effect of nasogastric tubes on Eustachian tube function

1990 ◽  
Vol 104 (1) ◽  
pp. 17-19 ◽  
Author(s):  
M. Wake ◽  
D. E. McCullough ◽  
J. D. Binnington
Keyword(s):  
Tympanic Membrane ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Nasogastric Tube ◽  
Cell System ◽  
Eustachian Tube Function ◽  
Nasogastric Tubes ◽  
Middle Ear Pressure ◽  
Tube Dysfunction ◽  
Tube Function

AbstractThe Eustachian tube acts as pressure equalizing tube between the nasopharynx and the middle ear. It also functions as a conduit for removal of secretions from the middle ear and mastoid air cell system into the post nasal space. Eustachian tube function may be assessed objectively using tympanometric measurements. (Brooks, 1968, Lutman, 1987).The post-operative use of nasogastric Ryles tubes is associated with reduced peak middle ear pressure (mmH2O) and reduced peak compliance volumes (ml) as assessed by tympanometry. In addition changes in the appearance of the tympanic membrane may occur with the protracted use of Ryles tubes. This phenomenon is a transient one.Nasogastric tube-induced Eustachian tube dysfunction is a previously unreported entity.

scholarly journals Assessment of eustachian tube dysfunction in middle ear pathologies

2018 ◽  
Vol 5 (1) ◽  
pp. 127
Author(s):  
T. Dinesh Singh ◽  
C. P. Sudheer
Keyword(s):  
Tympanic Membrane ◽  
Otitis Media ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Chronic Otitis Media ◽  
Eustachian Tube Function ◽  
Auditory Tube ◽  
Postoperative Assessment ◽  
Tube Dysfunction ◽  
Tube Function

<p class="abstract"><strong>Background:</strong> Auditory tube dysfunction is suspected as primary cause of chronic otitis media and leads to surgical related complications in otitis media with tympanic membrane perforation. The diagnosis of eustachian tube malfunction is essential to know the pathogenesis of chronic otitis media.</p><p class="abstract"><strong>Methods:</strong> A total 150 cases and 75 age, sex matched control subjects between age group 20-50 years were selected. Pre and post-surgical history was noted and detailed ear examination, tympanometry was done. Auditory tube function was evaluated through Valsalva test, nasopharyngoscopy, pneumatic otoscopy. Intact tympanic membrane was assessed by Williams test, perforated tympanic membrane by Toynbee’s test.  </p><p class="abstract"><strong>Results:</strong> Postoperative assessment of eustachian tube function by Toynbee’s test for 19 cases with failed tympanoplasty showed normal ET function in 5 cases, 8 cases had partial and 6 cases had gross ET dysfunction. Postoperative assessment ET function by William’s test showed 4 cases among 19 cases had partial ET dysfunction and 01 cases had gross ET dysfunction.</p><p class="abstract"><strong>Conclusions:</strong> Efficient surgical outcome of middle ear complications always depends on eustachian tube function. Most of the cases with residual CP showed partial or gross ET dysfunction. Patients with tubal dysfunction should be evaluated for underlying cause and treatable causes should addressed before proceeding for surgery as it increases the success rate of tympanoplasty.</p>

scholarly journals Does Septoplasty Affect Middle Ear Pressure and Eustachian Tube Function?

2014 ◽  
Vol 36 (3) ◽  
pp. 115-118 ◽  
Author(s):  
Mehmet Ilhan Sahin ◽  
Safak Gulec ◽  
Umit Perisan ◽  
Ismail Kulahli
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Eustachian Tube Function ◽  
Middle Ear Pressure ◽  
Tube Function

Measuring dynamic Eustachian tube function using tympanometry in a pressure chamber: the effect of nasal betahistine application

2019 ◽  
Vol 133 (7) ◽  
pp. 580-587 ◽  
Author(s):  
B K-H G Franz ◽  
R Patuzzi ◽  
C J Wraight ◽  
G Kay ◽  
A Ng ◽  
...  
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Animal Studies ◽  
Pressure Chamber ◽  
Chamber Pressure ◽  
Eustachian Tube Function ◽  
Hyperbaric Chamber ◽  
Middle Ear Pressure ◽  
Tube Dysfunction ◽  
Tube Function

AbstractObjectiveTo assess the effect of topical betahistine on Eustachian tube function in subjectively abnormal subjects in a hyperbaric chamber.MethodActive and passive Eustachian tube function was examined using tympanometry in a pressure chamber.ResultsActive Eustachian tube function was tested against the negative middle ear pressure induced by increasing the chamber pressure to +3 kPa. One voluntary swallow decreased middle-ear pressure by a mean of 1.36 kPa. Passive Eustachian tube function was tested by measuring spontaneous Eustachian tube openings as the chamber pressure dropped from +10 kPa to ambient. Four distinct patterns of Eustachian tube behaviour were seen, three of which indicated Eustachian tube dysfunction. Betahistine had no positive effect on Eustachian tube opening, although previous animal studies had suggested a beneficial effect.ConclusionTopical betahistine had no effect on Eustachian tube function. Combining a hyperbaric chamber with tympanometry proved ideal for evaluating Eustachian tube function.

scholarly journals Eustachian Tube Function in Adults without Middle Ear Disease

2011 ◽  
Vol 120 (4) ◽  
pp. 220-225 ◽  
Author(s):  
J. Douglas Swarts ◽  
Cuneyt M. Alper ◽  
Ellen M. Mandel ◽  
Richard Villardo ◽  
William J. Doyle
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Eustachian Tube Function ◽  
Tube Function ◽  
Middle Ear Disease

Evacuation of the Middle Ear by Sniffing: A Cause of High Negative Pressure and Development of Middle Ear Disease

1984 ◽  
Vol 92 (3) ◽  
pp. 312-318 ◽  
Author(s):  
Bernt Falk ◽  
Bengt Magnuson
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Negative Pressure ◽  
Experimental Studies ◽  
Eustachian Tube Function ◽  
Middle Ear Effusion ◽  
Pressure Equalization ◽  
Tube Function ◽  
Middle Ear Disease ◽  
Ear Effusion

Previous research on eustachian tube function has been devoted mainly to the study of the tubal opening ability and pressure equalization. This article summarizes a series of experimental studies focusing on the closing ability of the tube. Results support the belief that the purpose of the tube should be seen primarily as protecting the middle ear from the extensive pressure variations that physiologically take place in the nasopharynx. A number of studies of diseased ears have shown that tubal malfunction was characterized mainly by a reduced ability to withstand negative pressure in the nasopharynx. Sniffing can evacuate the middle ear, causing high negative intratympanic pressure. It seems likely that this mechanism is involved in the development of middle ear effusion and manifest retraction-type middle ear disease.

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