Multifrequency Immittancemetry in Experimentally Induced Stapes, Round Window and Cochlear Lesions

Darrouzet, V.; Dulon, Didier; Franco-Vidal, V.

doi:10.1159/000097795

Cited by 25 publications

(21 citation statements)

References 48 publications

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“…Yasui et al [2012] showed that the width of the conductance tympanogram at 2 kHz was greater in ears with low-frequency hearing loss including MD, delayed endolymphatic hydrops, and acute or repeated low-frequency hearing loss than in those with other types of hearing loss. Darrouzet et al [2007] showed that experimentally induced changes in inner ear pressure resulted in reproducible changes in the tympanogram at 2 kHz in guinea pigs, supporting the hypothesis that MFT at 2 kHz reflects endolymphatic hydrops.…”

Section: Introductionsupporting

confidence: 59%

“…The mechanism by which double peaks are observed in Y as well as G tympanometry at 2 kHz is still uncertain, although some authors have made mathematical models to explain the shape changes in tympanometry measured at high frequencies [Vanhuyse et al, 1975;Creten et al, 1978;. Darrouzet et al [2007] examined changes in MFT before and after inducing inner ear pathology in guinea pigs. They showed that an increase in inner ear pressure resulted in increases in Y and G width and decreases in RF values, while a decrease in inner ear pressure resulted in the disappearance of double peaks in Y and G tympanometry and an increase in RF values.…”

Section: Discussionmentioning

confidence: 99%

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Diagnostic Usefulness of Multifrequency Tympanometry for Ménière’s Disease

Sugasawa¹,

Iwasaki²,

Fujimoto³

et al. 2013

Audiol Neurotol

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Multifrequency tympanometry (MFT) is the measurement of the impedance of the middle ear transmission system at a wide range of frequencies from 200 Hz to 2 kHz. A potential use of MFT as a new diagnostic tool for detecting endolymphatic hydrops has recently been reported. However, its clinical usefulness for diagnosing Ménière’s disease (MD) remains unclear. To evaluate the clinical usefulness of MFT as a new qualitative and diagnostic test for MD, we performed MFT in 70 patients with unilateral or bilateral MD and in 29 normal control subjects. The width of double peaks in the admittance tympanograms (Y width) at 2 kHz and the resonance frequency (RF) were analyzed, and receiver operating characteristic (ROC) curves were constructed. The Y width in MD-affected ears was significantly greater than that in control ears (p < 0.001). The RF in MD-affected ears was significantly lower than that in control ears (p < 0.01). Neither the Y width nor RF had a significant relationship with hearing levels or the results of caloric and vestibular myogenic potential testings. The area under the ROC curve was 0.71 for the Y width and 0.66 for the RF. At the optimal cutoff points, the sensitivity and specificity of the Y width were 47.3 and 86.8%, respectively, and those of the RF were 41.3 and 84.2%, respectively. These results indicated that MFT is significantly associated with the presence of MD, but its diagnostic accuracy is only modest. MFT is a simple, noninvasive test, which should be considered as a complementary test in the diagnosis of MD.

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Section: Introductionsupporting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Diagnostic Usefulness of Multifrequency Tympanometry for Ménière’s Disease

Sugasawa¹,

Iwasaki²,

Fujimoto³

et al. 2013

Audiol Neurotol

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“…Multi-frequency tympanometry has also been recently used to detect inner ear disorders. It has been reported in the literature that the RF of the middle ear is influenced by the mechanical impedance of the cochlea [13,14] . It has been reported that individuals with large vestibular aqueduct syndrome have a reduced RF as the endolymphatic space increases the impedance of the compartments of the cochlea [13] .…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported in the literature that the RF of the middle ear is influenced by the mechanical impedance of the cochlea [13,14] . It has been reported that individuals with large vestibular aqueduct syndrome have a reduced RF as the endolymphatic space increases the impedance of the compartments of the cochlea [13] . It has been proposed that increased endolymph space alters the mechanical impedance of the stapes footplate, leading to the "third-window" effect, which may reduce the RF of the middle ear [14] .…”

Section: Discussionmentioning

confidence: 99%

Test-Retest Reliability of the Components of Multi-Frequency Tympanometry

Prabhu¹,

Manandhar²,

Ahmed³

2017

Int Adv Otol

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OBJECTIVE:Multi-frequency tympanometry and its components are extensively used to identify middle ear disorders. However, there are a limited number of studies that have attempted to determine its test-retest reliability. Thus, the present study attempted to determine the test-retest reliability of the different components of multi-frequency tympanometry. MATERIALS and METHODS:The resonant frequency (RF), F45, and ΔG were determined three times in 40adults with normal hearing. The results obtained across the three trials were compared to determine the test-retest reliability.RESULTS: F45 and ΔG had excellent intra-and inter-session reliabilities. The reliability of the RF was also good, but it was relatively less compared to that of the other two measures. The study also showed that there was no effect of gender on the reliability measures. CONCLUSION:Thus, F45 and ΔG can be clinically used considering theirhigh reliability, and the RF should be interpreted with caution. However, further studies on a larger group of patientsincluding a clinical group are essential for determining the further applicability of these results.

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“…The diagnostic use of multi-frequency tympanometry can also be expanded in inner ear disease. Indeed, Darousset et al [27] reported that the RF seems to be determined not only by the mass and stiffness of the middle ear system, but also by the mechanical impedance of the cochlea. Patients with large vestibular aqueduct syndrome (LVAS) have lower RF values, because as the endolymphatic space increases the impedance of the cochlear compartments decreases [28].…”

Section: Discussionmentioning

confidence: 99%

Multi-Frequency Tympanometry: Clinical Applications for the Assessment of the Middle Ear Status

Iacovou

Vlastarakos

Ferekidis³

et al. 2012

Indian J Otolaryngol Head Neck Surg

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The aim of the present paper was to review the current knowledge on multi-frequency tympanometry and explore its role as a diagnostic tool in various otologic conditions. Literature review in Medline and other database sources. Prospective controlled, prospective comparative, and prospective cohort studies, animal studies, retrospective studies and systematic reviews. Multi-frequency tympanometry provides more accurate and detailed information about the middle ear dynamics than standard tympanometry. Otosclerosis and rheumatoid arthritis characteristically increase the resonant frequency (RF) of the middle ear. Ossicular chain discontinuity, atelectatic tympanic membrane, and otitis media with effusion typically decrease the RF of the middle ear. Multifrequency tympanometry can also assess the stage of rheumatoid arthritis in the presence of middle ear involvement. The RF can be affected by the mechanical impedance of the cochlea, and multi-frequency tympanometry can be helpful in the diagnostic workup of LVAS. Multi-frequency tympanometry can be a useful tool to predict the diagnosis of various middle ear pathologies preoperatively, due to the ensuing changes in the RF of the mechano-acoustic system of the middle ear, which can be accurately determined when this methodology is applied.

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Multifrequency Immittancemetry in Experimentally Induced Stapes, Round Window and Cochlear Lesions

Cited by 25 publications

References 48 publications

Diagnostic Usefulness of Multifrequency Tympanometry for Ménière’s Disease

Diagnostic Usefulness of Multifrequency Tympanometry for Ménière’s Disease

Test-Retest Reliability of the Components of Multi-Frequency Tympanometry

Multi-Frequency Tympanometry: Clinical Applications for the Assessment of the Middle Ear Status

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