Tympanometric Measures of Eustachian Tube Function

1987 ◽  
Vol 30 (2) ◽  
pp. 207-214 ◽  
Author(s):  
Catherine L. Riedel ◽  
Terry L. Wiley ◽  
Michael G. Block
Keyword(s):  
Young Adults ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Peak Pressure ◽  
Eustachian Tube Function ◽  
Significant Difference ◽  
Acoustic Admittance ◽  
Tube Function ◽  
Pressure Peak ◽  
Negative Gradient

The purpose of this study was to develop instructions and procedures and to establish a normal data base for four tympanometric tests of Eustachian tube function: Valsalva, Toynbee, Inflation, and Deflation. Data were obtained for 24 young adults (48 ears) with normal hearing and normal middle-ear function. The tympanograms were analyzed for differences between baseline and experimental (postmaneuver) and baseline and posttest tracings for seven measures: tympanogram peak pressure, peak acoustic admittance, static acoustic admittance, negative gradient, positive gradient, and negative and positive acoustic-admittance values at ±400 daPa. The results indicated a statistically significant difference only in peak pressure for baseline and experimental tympanograms. Peak-pressure shifts were most pronounced for the Valsalva and Toynbee procedures. The small pressure shifts characteristic of the Inflation and Deflation procedures coupled with the potential for instrumental error severely limit the use of these procedures as means of obtaining reliable indices of tubal function.

scholarly journals Influence of repetitive diving in freshwater on pressure equalization and Eustachian tube function in recreational scuba divers

2017 ◽  
Vol 47 (4) ◽  
pp. 223-227
Author(s):  
Stefanie Jansen ◽  
◽  
Manuela Boor ◽  
Moritz F Meyer ◽  
Eberhard D Pracht ◽  
...  
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Peak Pressure ◽  
Eustachian Tube Function ◽  
Pressure Equalization ◽  
Negative Shift ◽  
Scuba Divers ◽  
Tube Function ◽  
Eustachian Tube Function Test ◽  
Recreational Scuba

Introduction: We investigated the effect of repetitive pressure exposure during freshwater dives on Eustachian tube function and the middle ear, assessed by the Eustachian tube function test (ETFT). Methods: This prospective observational cohort study included 23 divers over three consecutive days of diving in freshwater lakes in Nordhausen, Germany. Participants underwent otoscopy and ETFT before the first dive, between each dive and after the last dive. ETFT included regular tympanometry (R-tymp), tympanometry after Valsalva (V-tymp) and after swallowing (S-tymp). The peak pressure difference between the R-tymp and the V-tymp (R-VdP) defined effectiveness of pressure equalization after Valsalva manoeuvres. We evaluated the change in compliance and peak pressure and correlated the results to the otoscopic findings and diving experience. Results: Twenty-three divers performed 144 dives. Middle ear barotrauma was assessed using the Edmonds modification of the TEED scoring system. In the ETFT, the R-tymp peak pressure displayed a negative shift from day one to three (P = 0.001) and differed significantly between the experience groups (P = 0.01). R-VdP did not change significantly on any of the three days of diving (all P > 0.05). Participants without MEBt showed significantly lower R-tymp values than did those with barotrauma (P = 0.019). Conclusion: Repetitive pressure exposure during three consecutive days of freshwater diving led to a negative shift of the peak pressure in the middle ear. Less experienced divers showed significantly higher middle ear peak pressure and higher pressure differences after equalization manoeuvres. Higher middle ear peak pressure was also associated with a higher prevalence of barotrauma.

Tympanometric Changes at 226 Hz and 678 Hz Across 10 Trials and for Two Directions of Ear Canal Pressure Change

1984 ◽  
Vol 27 (2) ◽  
pp. 257-266 ◽  
Author(s):  
Richard H. Wilson ◽  
Janet E. Shanks ◽  
Susan K. Kaplan
Keyword(s):  
Young Adults ◽  
Middle Ear ◽  
Peak Pressure ◽  
Pressure Change ◽  
Transmission System ◽  
Ear Canal ◽  
Acoustic Admittance ◽  
Pressure Peak ◽  
The Mean

The influence that repeated tympanometric trials have on the aural-acoustic admittance characteristics of the middle-ear transmission system was studied in 24 young adults. The 226-Hz and 678-Hz data were generated by concurrently digitizing the conductance and admittance tympanograms at 25 daPa/s for both ascending and descending pressure directions. Ten successive trials for each frequency and direction of pressure change were made. Changes in admittance corrected for ear canal volume across the 10 tympanometrie trials were computed. The results demonstrated that generally admittance increases as the number of trials increases. For many subjects, the complexity of the tympanometric configuration also increases across trials. The results from eight subjects with single-peaked 678-Hz tympanograms were compared with the results from eight subjects with notched 678-Hz tympanograms to explain the mean decrease in susceptance across tympanometric trials. Finally, the pressure peak locations of the conductance, susceptance, and admittance tympanograms were evaluated and are discussed. The effects that differences in peak pressure location have on the computed static admittance values are presented.

scholarly journals A Tympanometric Pressure Swallow Test for Assessment of Eustachian Tube Function

1975 ◽  
Vol 84 (3) ◽  
pp. 339-343 ◽  
Author(s):  
Peggy S. Williams
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Peak Pressure ◽  
Clinical Findings ◽  
Eustachian Tube Function ◽  
Ear Canal ◽  
Pressure Shift ◽  
Tube Function ◽  
Air Cushion ◽  
Increased Pressure

Normal Eustachian tube function is necessary for maintaining healthy middle ear conditions. A tympanometric pressure swallow test is proposed which can be used to assess Eustachian tube function behind an intact tympanic membrane. In general, after recording a baseline tympanogram, mechanically created positive and negative air pressures are created in a hermetically sealed ear canal causing increased pressure on the middle ear air cushion. The patient is then asked to swallow. Preliminary clinical findings in ears with apparent normal Eustachian tube function show that a shift in the peak pressure point of the tympanogram occurs when the tympanogram is recorded again, implying that the Eustachian tube opens and equalizes middle ear air pressure. Positive canal pressure swallow maneuvers show a peak pressure shift to a negative value, whereas negative pressure swallow maneuvers show a peak pressure shift to a positive value.

Comparison of Eustachian Tube Function in Children and Adults with Normal Ears

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 20-24 ◽  
Author(s):  
Anita Bylander
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Pressure Chamber ◽  
Positive Pressure ◽  
Eustachian Tube Function ◽  
Jaw Movements ◽  
Middle Ear Pressure ◽  
Significant Difference ◽  
Tube Function ◽  
Closing Pressure

The eustachian tube function was studied in 53 children and 55 adults, all otologically healthy, by means of tympanometry in a pressure chamber. The ability to equilibrate applied overpressures and underpressures in the middle ear by deglutition or jaw movements, ie, muscular opening function was significantly poorer in children than in adults, and also significantly poorer in younger children than in older ones. The pressure opening function of the tube was determined during reduction of the pressure in the chamber, ie, deflation test. The relative positive pressure persisting in the middle ear after the deflation test, ie, closing pressure, was also measured. No significant difference was found between children and adults. The ability to create a negative middle ear pressure by sniffing (positive sniffing test) was correlated with low closing pressures of the tube. Children with negative middle ear pressures had poor muscular opening function rather than positive sniffing tests. Judging from serial tympanometric measurements for up to two months, also performed in ten sniffing positive and ten sniffing negative children, it seems that the results obtained in the pressure chamber tests reflect a “mean tubal function.”

Middle-Ear Resonance Frequency and Eustachian Tube Function in Players of Wind Instruments

2021 ◽  
pp. 1-9
Author(s):  
Fulya Ozer ◽  
Cem Ozer ◽  
Seyra Erbek ◽  
Levent N. Ozluoglu
Keyword(s):  
Resonance Frequency ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Wind Instruments ◽  
Control Group ◽  
Forced Expiration ◽  
Eustachian Tube Function ◽  
Wind Instrument ◽  
Significant Difference ◽  
Tube Function

<b><i>Introduction:</i></b> The effect of the continuous forced expiration action of players of wind instruments to produce sound, on the eustachian tube functions and the middle-ear resonance frequency (RF), has not been investigated in the literature to date. The aim of this study is to evaluate eustachian tube functions and the middle-ear RF of players of wind instruments. <b><i>Methods:</i></b> In this prospective case-control clinical study, a study group of 28 players of wind instruments in the orchestra (28 participants, 56 ears) and a control group of 34 volunteers (34 participants, 68 ears) were included. The eustachian function of wind instrument players in a symphony orchestra was measured using an automatic eustachian tube function test in acoustic tympanometry and the RF of the middle ear was determined in multifrequency tympanometry. <b><i>Results:</i></b> There was a statistically significant difference among the musicians, especially in players of woodwind instruments, in terms of dysfunction of the eustachian tubes (<i>p</i> = 0.048). In the musicians, the pre- and postperformance RF mean values for all ears were 925 and 1,020 Hz, respectively, and these were significantly different (<i>p</i> = 0.004). <b><i>Conclusion:</i></b> This is the first study to uses multifrequency tympanometry to examine the middle-ear RF and eustachian tube function of wind instrument musicians in an orchestra. Eustachian tube dysfunction was found to be more prominent and a higher RF of the middle ear was seen after a performance, especially in players of wood wind instruments. However, the effect of these on the professional performance of players of wind instruments should be investigated in future work.

A Comparison of the Effects of Veau-Wardill-Kilner Palatoplasty and Furlow Double-Opposing Z-Plasty Operations on Eustachian Tube Function

2000 ◽  
Vol 37 (3) ◽  
pp. 266-270 ◽  
Author(s):  
Ethem Güneren ◽  
Zafer Özsoy ◽  
Mithat Ulay ◽  
Erhan Eryilmaz ◽  
Haluk Özkul ◽  
...  
Keyword(s):  
Cleft Palate ◽  
Eustachian Tube ◽  
Soft Palate ◽  
Surgical Anatomy ◽  
Eustachian Tube Function ◽  
Secretory Otitis Media ◽  
Significant Difference ◽  
Before And After ◽  
Tube Function

Objective The purpose of this study was to compare the effects of Veau-Wardill-Kilner (VWK) two-flap palatoplasty and Furlow double-opposing Z-plasty operations on eustachian tube (ET) opening in patients with cleft palate (CP). Design Twenty-six patients underwent CP repair between 1993 and 1997. VWK and Furlow operations were used in 13 patients each. All patients were examined by the otorhinolaryngologist before and after the operations; mean follow-up time was 27.3 months. Secretory otitis media (SOM), as identified by tympanograms, was the comparison criterion used. Results The prevalence of SOM was 69% (n = 18) in all CP patients pre-operatively. Among those with preoperative SOM, we did not find any statistically significant difference in the frequency of postoperative SOM between the two techniques. Conclusion This study suggests that there is no difference in postoperative ET function between patients undergoing either VWK or Furlow operations, in spite of the differences in muscle positioning in these operations. We discuss the implications of this finding in relation to surgical anatomy and histology of the soft palate muscles.

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
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