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Journal articles on the topic 'Tympanometry'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 April 2022

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1

Biswas, Anirban, and Nilotpal Dutta. "Wideband Tympanometry." Annals of Otology and Neurotology 01, no. 02 (September 2018): 126–32. http://dx.doi.org/10.1055/s-0038-1676876.

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AbstractTraditional tympanometry done with 226 Hz probe tone frequency has some inherent defects and limitations due to which it does not give a very true picture of the middle ear status, and tympanometric findings are often very deceptive. It is not uncommon for otologists to find that on opening the middle ear, the pathology in the middle ear is very different from what they had expected from tympanometric findings. This is because the 226 or 220 Hz, that is used for the traditional single tone tympanometry is based on physical convenience, i.e., practicalities in carrying out the test rather than on test performance, i.e., the diagnostic efficacy of the test. The 226 Hz tympanometry is a poor predictor of middle ear effusions in babies and will be wrong in approximately 50% of cases and diagnosis of ossicular chain discontinuity by type A tympanogram is correct in only about 40% cases, if not lesser. In most cases of otosclerosis, though there is a middle ear stiffness, the tympanometric findings with traditional tympanometry show normal compliance, which is not expected in stiffness of the middle ear. Tympanometry is basically to identify common middle ear pathologies, such as middle ear effusion, ossicular chain discontinuity and otosclerosis. However, if in these very cases the diagnostic efficacy is so poor, then the objective of the test is lost. Traditional tympanometry has a lot of limitations and fallacies. These issues led scientists to sharpen the diagnostic efficacy of tympanometry and the final outcome of the research is wide band tympanometry (WBT). The special advantages of WBT, its difference from traditional single frequency tympanometry, and its clinical utility are presented in this article. Here, we review the concept of WBT, the basic mechanism, and its vast clinical applications. Most of the deficiencies of traditional tympanometry have been overcome by WBT. Not only that, the scope of tympanometry has been further widened by WBT and in addition to diagnosing middle ear pathologies with much more confidence, it can also be used for postoperative monitoring using non-pressurized wideband absorbance.

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Alper, Cuneyt M., Katherine D. Philp, Juliane M. Banks, and William J. Doyle. "Tympanometry Accurately Measures Middle Ear Underpressures in Monkeys." Annals of Otology, Rhinology & Laryngology 112, no. 10 (October 2003): 877–84. http://dx.doi.org/10.1177/000348940311201009.

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Tympanometry is useful for evaluating middle ear (ME) status, but its accuracy in estimating true ME pressure has been questioned. We evaluated the accuracy of tympanometry in 6 monkeys. Direct application and measurement of ME pressure were achieved with a probe introduced into the mastoid antrum, and tympanometry was done over a large range of applied ME pressures. For all ears, tympanometric pressure was a linear function of applied pressure. At large overpressures, the tympanometric pressure was approximately 40 mm H2O greater than the applied pressure, but there was little error in the measurement for applied underpressures. The measurement error was proportional to the ME pressure multiplied by the ratio of the extant volume displacement of the tympanic membrane to ME volume. These results show that in monkeys, tympanometry provides an accurate, relatively unbiased estimate of ME underpressure and suggest that the measurement error for tympanometry can be predicted for MEs of other species.

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Margolis, Robert H., Lisa L. Hunter, and G. Scott Giebink. "Tympanometric Evaluation of Middle Ear Function in Children with Otitis Media." Annals of Otology, Rhinology & Laryngology 103, no. 5_suppl (May 1994): 34–38. http://dx.doi.org/10.1177/00034894941030s510.

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Current tympanometry instruments allow a quantitative approach to the evaluation of middle ear function in children with otitis media. Conventional 226-Hz tympanograms can be characterized by static admittance, tympanometric width (gradient), tympanometric peak pressure, and equivalent volume. Multifrequency tympanograms obtained with probe frequencies ranging from 226 to 2,000 Hz appear to be sensitive to sequelae of otitis media that are not detected by conventional tympanometry or audiometry.

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4

Ramatsoma, Hlologelo, and Dirk Koekemoer. "Validation of a Bilateral Simultaneous Computer-Based Tympanometer." American Journal of Audiology 29, no. 3 (September 3, 2020): 491–503. http://dx.doi.org/10.1044/2020_aja-20-00013.

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Purpose This study aimed to investigate the accuracy of bilateral simultaneous tympanometric measurements using a tympanometer with two pneumatic systems inside circumaural ear cups. Method Fifty-two adults (104 ears), with a mean age of 32 years ( SD = 12.39, range: 18–60 years) were included in this study. A within-subject repeated-measures design was used to compare tympanometric measurements yielded with the investigational device in unilateral and bilateral simultaneous conditions compared with an industry-standard tympanometer. Results No significant bias ( p > .05) was found between the mean of the differences of tympanometric measurements yielded by the two devices, except for a significant bias ( p < .05) of the mean of the differences for ear canal volume measurements (0.05 cm 3 ). The Bland–Altman plots showed overall good agreement between the tympanometric measurements between the two instruments. In all 104 ears, the tympanogram types of the KUDUwave TMP were compared with the reference device. The results were highly comparable with a sensitivity and specificity of 100% (95% CI [86.8%, 100%]) and 92.3% (95% CI [84.0%, 97.1%]), respectively. Conclusions The investigational device is a suitable instrument for unilateral or bilateral simultaneous tympanometric measurements in adults and demonstrates the potential of decentralized and accessible tympanometry services.

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Mujahid, Mohammed Naseeruddin, and Syeda Ayesha. "Analysis of Tympanometric Attributes in Middle Ear Diseases and in Postoperative Middle Ear Surgeries - A Prospective Study at a Tertiary Hospital in Hyderabad, Telangana." Journal of Evolution of Medical and Dental Sciences 10, no. 45 (December 11, 2021): 3827–31. http://dx.doi.org/10.14260/jemds/2021/774.

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BACKGROUND Tympanometry as a definitive test protocol in the diagnosis of middle-ear disease and function remains still a tentative one. Primarily this is the result of cost effectiveness and concerns over referral to an audiology unit. It was also found to be due to the concerns over variability in test protocols and its influence on demographic and environmental factors. The present study was done to simplify the understanding of the different test variables of tympanometry. METHODS The clinical study was conducted in the Department of ENT, Deccan College of Medical Sciences and Princess Esra Hospital, Hyderabad. Out of 134 patients registered with loss of hearing, 68 patients were grouped as preoperative group (136 ears) and 66 patients as postoperative group (132 ears). The patients in both groups were registered at different times and they were not the same. Audiology equipment used was impedance audiometers (Siemens SD 30, interacoustics AT 235 H); portable tympanometer (Welch-Allyn). Preliminary pure tone audiometry was also done to supplement the diagnosis. The test results were reported as: conductive, sensorineural, and mixed hearing loss. The results were reported based on the variables/criteria: admittance, tympanometric peak pressure (TPP), peak amplitude (Ya peak) and the volume of the ear canal. RESULTS There were 39 males (57.35 %) and 29 females (42.64 %) in the preoperative group. There were 41 males (62.12 %) and 25 females (37.87 %) in the postoperative group. Middle ear diseases showing conductive deafness were grouped as four types: a) middle ear effusion (35 patients); b) Eustachian tube dysfunction (31 patients); c) Ossicular chain adhesions (38 patients) d) tympanic membrane perforations and tympanosclerosis (28 patients) and e) otosclerosis (02 patients). CONCLUSIONS Using tympanometric attributes such as admittance, tympanometric peak pressure, peak amplitude (Ya peak) and the volume of the ear canal, it was possible to make accurate diagnosis of middle ear diseases and their exact pathology or make a differential diagnosis. The attributes used gave much accurate measure of the mechano-acoustics than the preset values used regularly by many centres. KEY WORDS Impedance Audiometry (Tympanometry), Middle Ear Diseases, Compliance, Peak Pressure and Tympanometric Peak Pressure (TPP)

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Swanepoel, De Wet, Robert H. Eikelboom, and Robert H. Margolis. "Tympanometry Screening Criteria in Children Ages 5–7 Yr." Journal of the American Academy of Audiology 25, no. 10 (November 2014): 927–36. http://dx.doi.org/10.3766/jaaa.25.10.2.

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Background: Despite its value as a diagnostic measure of middle-ear function, recommendations for tympanometry as a screening test for middle-ear disorders have been tentative. This is primarily due to concerns related to over-referrals, cost-effectiveness, variability in referral criteria and protocols, variable reported screen performance, and influence of demographic and environmental factors. Purpose: The current study assessed tympanometry in a large population of children between 5–7 yr old in terms of normative ranges, performance of current recommended referral criteria, and associations with independent demographic and environmental variables. Research Design: Retrospective cohort study. Study Sample: A total of 2868 children and their families were originally enrolled in the Raine Cohort Study in Western Australia. Of these, 1469 children between 5–7 yr old (average age = 5.97 yr, SD = 0.17 yr) were evaluated with tympanometry and pure-tone audiometry screening. Data Collection and Analysis: Tympanometry was conducted using a 226 Hz probe tone with screening ipsilateral acoustic reflexes recorded using a 1000 Hz stimulus. Hearing screening was conducted using pure tones at 20 dB HL for 1000, 2000, and 4000 Hz. Relationships among normative ranges (90% and 95% ranges) for tympanometric indices, age, gender, and month of test were determined. Associations were also explored between tympanometry referrals and month of test, gender, and absence of acoustic reflexes. Results: Normative 90% ranges for tympanometric peak pressure was –275 to 15 daPa, 60–150 daPa for peak compensated tympanometric width, 0.2 and 1.0 mmho for peak compensated static admittance, and 0.7–1.3 cm3 for ear canal volume. Current screening guidelines result in high referral rates for children 5–7 yr old (13.3% and 11.5% using the American Speech-Language-Hearing Association [ASHA] and American Academy of Audiology [AAA] guidelines, respectively). The subgroup of children 6–7 yr old had referral rates (for ears tested) of only 3.3% and 2.7%, respectively, according to ASHA and AAA guidelines. The prevalence of middle-ear effusion (admittance <0.1 mmho) was significantly different across seasons, with the highest (13.5%) in September and lowest (3.8%) in January. Month of test was associated with a general decrease in tympanometric peak pressure across the population. Conclusions: An 80% reduction in tympanometry referrals for children ages 6 and 7 yr compared with children age 5 yr argues for tympanometry as a first-tier screening method in older children only. The impact of regional seasonal influences, representing an increase in referrals as high as 3.5 times from one month to another, should also inform and direct pediatric screening programs for middle-ear functioning and/or hearing loss.

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Macedo, Camila, Mariza Feniman, and Tamyne de Moraes. "Multifrequency tympanometry in infants." International Archives of Otorhinolaryngology 16, no. 02 (April 2012): 186–94. http://dx.doi.org/10.7162/s1809-97772012000200006.

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Summary Introduction: The use of conventional tympanometry is not sufficiently sensitive to detect all cases of middle ear changes, and this hinders accurate diagnosis. Objective: To characterize acoustic immittance measures of infants from 0 to 3 months of age using multifrequency tympanometry in a prospective study. Method: 54 infants from 0 to 3 months of age were evaluated. The inclusion criteria included absence of respiratory infections during the evaluation, presence of transient evoked otoacoustic emissions, and absence of risk indicators for hearing loss. The subjects were evaluated by an audiologic interview, a visual inspection of the ear canal, and measures of acoustic immittance at the frequencies of 226 Hz, 678 Hz, and 1,000 Hz. Tympanometric records of the occlusion effect, tympanometric curve type, tympanometric peak pressure, equivalent ear canal volume, and peak compensated static acoustic admittance were collected. Results: The results indicated the presence of an occlusion effect (2.88% at 226 Hz, 4.81% at 678 Hz and 3.85% at 1,000 Hz), predominance of a tympanometric curve with a single peak (65.35% at 226 Hz, 81.82% at 678 Hz, and 77.00% at 1,000 Hz), and tympanometric peak pressure ranging from -155 to 180 daPa. Further, the equivalent ear canal volume increased with the frequency of the probe (0.64 mL at 226 Hz, 1.63 mho at 678 Hz, and 2.59 mmho at 1,000 Hz) and the peak compensated static acoustic admittance values increased with an increase in frequency (0.51 mL at 226 Hz, 0.55 mmho at 678 Hz and 1.20 mmho at 1,000 Hz). 93.06% of the tympanograms were classified as normal at 226 Hz, 81.82% at 678 Hz, and 77.00 % at 1,000 Hz, respectively. Conclusion: Taken together, these results demonstrated that utilizing these evaluations made it possible to characterize the acoustic immittance measures of infants.

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Zheng, Wei, James D. Smith, Bing Shi, Yu Li, Yan Wang, Sheng Li, Zhaoli Meng, and Qian Zheng. "The Natural History of Audiologic and Tympanometric Findings in Patients with an Unrepaired Cleft Palate." Cleft Palate-Craniofacial Journal 46, no. 1 (January 2009): 24–29. http://dx.doi.org/10.1597/07-152.1.

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Objective: To present the tympanometric findings in 552 patients (115 over 10 years of age) with unrepaired cleft palate (256 had audiologic findings) and to show the natural history and outcome of these cases. Setting: The cleft lip and palate clinic for the Division of Cleft Lip and Palate Surgery at the West China College of Stomatology, Sichuan University, Chengdu, People's Republic of China. Design: Pure-tone audiometric and tympanometric evaluations were performed on 552 patients with an unrepaired cleft palate. Results were analyzed by looking at the patient's age and cleft palate type. Results: This study demonstrated an age-related decrease in the frequency of hearing impairment and abnormal tympanometry. The frequency of hearing impairment and abnormal tympanometry in patients with submucous cleft palate was significantly lower than in patients from the other four major cleft palate categories (p = .001, p = .006, respectively). Conclusions: The middle ear function and hearing levels of unrepaired cleft palate patients improved with age, but at least 30% of the patients’ ears demonstrated a hearing loss and abnormal tympanometry in each age group, including those over 19 years of age. In the crucial language-learning stage, the frequency of hearing impairment and abnormal tympanometry was as high as 60%. Considering these results, palate repair and surgical intervention, such as tube insertion, for otological problems should be considered at an early age.

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9

Hamid, Mohamed, and Kenneth H. Brookler. "Tympanometry." Ear, Nose & Throat Journal 86, no. 11 (November 2007): 668–69. http://dx.doi.org/10.1177/014556130708601116.

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Lazo-Sáenz, Juan Gerardo, Armando Alejando Galván-Aguilera, Verónica Araceli Martínez-Ordaz, Víctor Manuel Velasco-Rodríguez, Armando Nieves-Rentería, and Cuauhtémoc Rincón-CastañEda. "Eustachian Tube Dysfunction in Allergic Rhinitis." Otolaryngology–Head and Neck Surgery 132, no. 4 (April 2005): 626–29. http://dx.doi.org/10.1016/j.otohns.2005.01.029.

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OBJECTIVE: To assess eustachian tube function in patients with allergic rhinitis and compare them with a control group. STUDY DESIGN AND SETTING: Tympanometry was performed in 130 patients (260 ears), divided into 2 groups: 80 cases with allergic rhinitis and 50 healthy controls. Cases underwent skin hypersensitivity tests. RESULTS: Cases, age 21.1 ± 14.9; Controls, age 23.9 ± 15.6. Most frequent skin hypersensitivity: Dermatophagoides pt (62%), Zea Maiz (44%), and Cockroach (37%). Tympanometry of cases showed negative values of peak tympanometric pressure in both children and adults ( P ≤ 0.05). Among children under 11 years of age, 15.5% tympanograms showed abnormal curves (13% C curves and 3% B curves); among the control group only normal curves were found (type A). CONCLUSION: Allergic rhinitis patients have a higher risk of eustachian tube dysfunction, particularly during childhood. Tympanometry is a noninvasive, readily available procedure that may be useful in these patients to prevent chronic middle-ear disease.

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Lee, Seung-Hwan, Youngseok Lee, Yunjeong Kim, Bum-Suk Kim, Seung-Won Jeong, Jin Hyeok Jeong, and Chul-Won Park. "S220 – Characteristics of Fluid and Tympanometry Profiles in OME." Otolaryngology–Head and Neck Surgery 139, no. 2_suppl (August 2008): P149. http://dx.doi.org/10.1016/j.otohns.2008.05.395.

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Objectives The aim of this study was to compare the characteristics of the type B tympanogram curve (maximum admittance, tympanometric peak pressure) to the volume and viscosity of middle ear fluid. Methods We conducted preoperative tympanometry from 175 ears in 94 children with otitis media with effusion. The volume and viscosity of middle ear fluid collected during myringotomy were classified into 3 groups respectively. We analysed the correlations between the characteristcs of middle ear fluid and tympanometric profiles such as maximum admittance, tympanometric peak pressure. Student t test was used for statistical analysis. Results No correlation was found between peak pressure of the tympanogram and the characteristics of middle ear fluid. However, as the volume of middle ear fluid increases, the viscosity and the straight type B tympanogram increased significantly (p<0.001, p=0.002 respectively). And as the volume and the viscosity of the middle ear fluid increased, the Admmax significantly decreased (p<0.001). Conclusions Characteristics of type B tympanogram curve were correlated with the volume and viscosity of middle ear fluid. And it can be suggested that tympanometry may be used as an objective measure to estimate the characteristics of the middle ear fluid.

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Stieve, Martin, Hamidreza Mojallal, Rolf-Dieter Battmer, Mark Winter, and Thomas Lenarz. "Multifrequency Tympanometry." Otology & Neurotology 28, no. 7 (October 2007): 875–77. http://dx.doi.org/10.1097/mao.0b013e31814617db.

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Hunter, Lisa L., and Robert H. Margolis. "Multifrequency Tympanometry." American Journal of Audiology 1, no. 3 (July 1992): 33–43. http://dx.doi.org/10.1044/1059-0889.0103.33.

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Multifrequency tympanometry has emerged as a clinically feasible test with the advent of computer-controlled systems that can store and analyze complex immittance components at multiple probe tone frequencies. The theoretical basis for understanding multifrequency tympanometry has existed for years, but the diagnostic utility of data obtained at frequencies higher than 660 Hz needs further clarification. In this short course, the Vanhuyse model for the analysis of multifrequency tympanograms is discussed and clinical examples illustrating the usefulness of the model are presented. Normative data are provided for adults and children, and various methods for data acquisition and measurement of resonant frequency are presented.

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Hall, James. "Contemporary Tympanometry." Seminars in Hearing 8, no. 04 (November 1987): 319–27. http://dx.doi.org/10.1055/s-0028-1091380.

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Holte, Lenore, and Robert Margolis. "Screening Tympanometry." Seminars in Hearing 8, no. 04 (November 1987): 329–37. http://dx.doi.org/10.1055/s-0028-1091381.

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Robinson, Dale O., Doris V. Allen, and Lynn Pekkala Root. "Infant Tympanometry." Journal of Speech and Hearing Disorders 53, no. 3 (August 1988): 341–46. http://dx.doi.org/10.1044/jshd.5303.341.

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Pau, H. W., K. Ehrt, T. Just, U. Sievert, and R. Dahl. "How reliable is visual assessment of the electrically elicited stapedius reflex threshold during cochlear implant surgery, compared with tympanometry?" Journal of Laryngology & Otology 125, no. 3 (November 5, 2010): 271–73. http://dx.doi.org/10.1017/s0022215110002392.

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AbstractObjectives:To assess the reliability of visually assessed thresholds of the electrically elicited stapedius reflex, recorded during cochlear implant surgery, compared with intra-operative tympanometric threshold assessment. Intra-operatively recorded electrically elicited stapedius reflex thresholds vary considerably, and differ from those measured post-operatively by means of impedance changes (i.e. using tympanometry). Thus, any confounding effect of different intra-operative techniques and visual assessment inaccuracies should be excluded.Methods:Both techniques (i.e. visual observation and tympanometry) were performed intra-operatively in six patients, and threshold values were compared.Results:Recorded electrically elicited stapedius reflex thresholds were very similar for both techniques. Visually assessed thresholds were slightly higher in some cases and lower in others, compared with tympanometric thresholds.Discussion:There was almost no difference between reflex thresholds measured with the two different techniques under the same intra-operative conditions. Therefore, we conclude that differences between intra- and post-operative thresholds are not due to the use of different measuring techniques. The main reason for such differences is probably the influence of intra-operative narcotics on reflex thresholds.

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Pang-Ching, Glenn, Michael Robb, Robert Heath, and Mona Takumi. "Middle Ear Disorders and Hearing Loss in Native Hawaiian Preschoolers." Language, Speech, and Hearing Services in Schools 26, no. 1 (January 1995): 33–38. http://dx.doi.org/10.1044/0161-1461.2601.33.

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This study reported on the prevalence of middle ear disorders and hearing loss among native Hawaiian preschoolers. The subjects included children enrolled in the Kamehameha Schools on the islands of Kauai, Maui, and Oahu. At the beginning of the school year, each child received a battery of tests that included pure-tone audiometry, tympanometry, acoustic reflectometry, and pneumatic otoscopy. Approximately 15% of the children failed a majority of these tests. Serial testing, involving pure-tone audiometry and tympanometry, was administered at regular intervals throughout the school year. Approximately 9–15% of the children failed both audiometric and tympanometric tests at each of the serial screenings. The results are discussed in comparison to other indigenous groups at risk for middle ear disorders and hearing loss and as evidence of the need to develop systematic screenings for Hawaii’s preschool children.

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Kawase, Tetsuaki. "Multi-frequency tympanometry." AUDIOLOGY JAPAN 62, no. 6 (December 28, 2019): 595–606. http://dx.doi.org/10.4295/audiology.62.595.

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Stoney, P. J., and J. H. Rogers. "Attitudes to tympanometry." Journal of Laryngology & Otology 103, no. 7 (July 1989): 657–58. http://dx.doi.org/10.1017/s0022215100109636.

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Shanks, Janet E., Richard H. Wilson, and Nancy K. Cambron. "Multiple Frequency Tympanometry." Journal of Speech, Language, and Hearing Research 36, no. 1 (February 1993): 178–85. http://dx.doi.org/10.1044/jshr.3601.178.

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Three methods for compensating multiple frequency acoustic admittance measurements for ear canal volume were studied in 26 men with normal middle ear transmission systems. Peak compensated static acoustic admittance (| y |) and phase angle (ø) were calculated from sweep frequency tympanograms (226–1243 Hz in 113 Hz increments). Of the procedures used to compensate for volume in rectangular form, the ear canal pressure used to estimate volume had the largest effect on the estimate of middle ear resonance. Median resonance was 800 Hz for admittance measurements compensated at 200 daPa versus 1100 Hz for measurements compensated at –350 daPa. The remaining two methods, compensation of susceptance only versus both susceptance and conductance and compensation using the minimum volume versus separate volumes at each frequency, did not affect estimates of middle ear resonance. Estimates of middle ear resonance from compensated phase angle measurements also were compared with estimates of resonance from admittance and phase difference curves. although resonance could not be estimated from the phase difference curve, resonance estimated from the admittance difference curve agreed with the estimate from compensated phase angle.

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Wei De, Kenneth Chua. "A Preliminary Analysis of Tympanometric Parameters in a Local Multiethnic Population." Audiology Research 10, no. 2 (December 16, 2020): 77–82. http://dx.doi.org/10.3390/audiolres10020013.

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Background: Tympanometry is a routine clinical test ordered at the Department of Otolaryngology, Ear, Nose and Throat (ENT) at Changi General Hospital (CGH). In combination with the pure tone audiogram, tympanograms aid in the diagnostic value of various middle ear disorders. However, its diagnostic value depends on the physician and audiologist’s accuracy of classifying and interpreting the tympanograms. Presently, Caucasian normative values are used in the classification of tympanograms, which could be inaccurate without population specific norms. Therefore, there is a need to understand ethnic differences in tympanometry parameters in order to usefully interpret the tympanogram. Thus far, there are no local studies on the differences in tympanometric parameters among multiethnic groups. Previous studies also had conflicting results on the effects of ethnicity with direct or indirect comparison only between two ethnic groups. To our knowledge, this is the first preliminary investigation on the effects of demographic and anthropometric measurements on tympanometric parameters. Materials and Methods: 90 patients’ medical charts were randomly selected and reviewed to extract demographic, anthropometric and clinical information. Tympanogram characteristics among ethnic groups were investigated using univariate and multivariate analyses. The mean ages of males and females in the study were 41.9 years ± 17.4 and 46.1 ± 19.2, respectively. Results: Gender significantly influenced ear canal volume (ECV). Chinese had marginally significant lower static admittance (SA) as compared to non-Chinese. There were, however, no effects of age or anthropometric measurements on tympanometric results. Conclusion: Further prospective large cohort analyses are warranted to expand this investigation to better elucidate differences observed in tympanometric parameters and establish population specific norms for appropriate and accurate tympanogram classifications.

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Singh, Niraj Kumar, and Trupti Lata Baral. "Test–Retest Reliability of Multicomponent Tympanometry at 226-, 678-, and 1000-Hz Probe Tones Over 10 Sessions." American Journal of Audiology 28, no. 2S (August 28, 2019): 516–23. http://dx.doi.org/10.1044/2019_aja-ind50-18-0097.

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Purpose Numerous studies are testimony to the pivotal role of multicomponent tympanometry in diagnosis and differential diagnosis of auditory pathologies, not only of the middle ear but also the inner ear. Repeated measurements using multicomponent tympanometry have been used as a measure for stapedial tendon preservation during middle ear surgeries. However, such applications would produce reliable results only when multicomponent tympanometry produces replicable results across sessions. Nonetheless, there is dearth of studies exploring the test–retest repeatability of multicomponent tympanometry across multiple sessions using various probe tones. Therefore, this study aimed at examining the test–retest reliability of multicomponent tympanometry across 10 different sessions for 226-, 678-, and 1000-Hz probe-tone frequencies. Method The study included 28 healthy adults in the age range of 18 to 25 years. All participants underwent multicomponent (susceptance and conductance) tympanometry using 226-, 678-, and 1000-Hz probe tones. Results Multicomponent tympanometry showed excellent test–retest reliability for all parameters of 226- and 678-Hz probe tones. The probe tone of 1000 Hz produced excellent test–retest reliability for most of the parameters. Conclusions The clinical recording of multicomponent tympanometry over multiple sessions is more reliable when using 226- and 678-Hz probe tones. Hence, these probe tones lend themselves to possible applications requiring multiple recordings, such as evaluation of treatment outcomes or preservation of middle ear structures during surgery.

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Kei, Joseph, Julie Allison-Levick, Jacqueline Dockray, Rachel Harrys, Christina Kirkegard, Janet Wong, Marion Maurer, Jayne Hegarty, June Young, and David Tudehope. "High-Frequency (1000 Hz) Tympanometry in Normal Neonates." Journal of the American Academy of Audiology 14, no. 01 (January 2003): 020–28. http://dx.doi.org/10.3766/jaaa.14.1.4.

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The characteristics of high frequency (1000 Hz) acoustic admittance results obtained from normal neonates were described in this study. Participants were 170 healthy neonates (96 boys and 74 girls) aged between 1 and 6 days (mean = 3.26 days, SD = 0.92). Transient evoked otoacoustic emissions (TEOAEs), and 226 Hz and 1000 Hz probe tone tympanograms were obtained from the participants using a Madsen Capella OAE/middle ear analyser. The results showed that of the 170 neonates, 34 were not successfully tested in both ears, 14 failed the TEOAE screen in one or both ears, and 122 (70 boys, 52 girls) passed the TEOAE screen in both ears and also maintained an acceptable probe seal during tympanometry. The 1000 Hz tympanometric data for the 122 neonates (244 ears) showed a single-peaked tympanogram in 225 ears (92.2 %), a flat-sloping tympanogram in 14 ears (5.7 %), a double-peaked tympanogram in 3 ears (1.2 %) and other unusual shapes in 2 ears (0.8 %). There was a significant ear effect, with right ears showing significantly higher mean peak compensated static admittance and tympanometric width, but lower mean acoustic admittance at +200 daPa and gradient than left ears. No significant gender effects or its interaction with ear were found. The normative tympanometric data derived from this cohort may serve as a guide for detecting middle ear dysfunction in neonates.

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Darraj, Eyad, Mouhannad Fakoury, and Yusur Abdulghafoor. "Sensitivity and specificity of tympanometry in diagnosis of serous otisis media (SOM)." Journal of Otolaryngology-ENT Research 12, no. 2 (2020): 60–63. http://dx.doi.org/10.15406/joentr.2020.12.00457.

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Background: Serous Otitis media (SOM) is one of the most commonly encountered pathologies in children population. Fluids collection often leads to hearing loss with subsequent speech and language delay. So early diagnosis and management are of paramount importance to prevent these sequela. Effective management is often surgical: myringotomy and fluid aspiration. Myringotomy is not only therapeutic procedure, it is also the gold standard diagnostic method. It has been noticed that many ENT Surgeons in Gulf region depend on Tympanometry only for SOM diagnosis and ignore a complete clinical approach (history, physical examination including pneumatic endoscopy), this has ended up to a considerable unnecessary surgeries with high false positive diagnosis. The aim of this study is to evaluate the sensitivity and specificity of Tympanometry in diagnosis of SOM in a local study, and to draw the attention of ENT Surgeons in this part of the world not to rush to book patients for myringotomy based on Tympanometry results only. Methods: This cross-sectional study involved patients aged ≤12 yo, whom underwent myringotomy for SOM management during the period: from June 2018 to March 2019 at the ENT - department Dubai Hospital. The evaluation included the presenting complaint, physical examination, preoperative tympanometry result and intraoperative findings. Typ B tympanometry was considered (positive) for the diagnosis of SOM, while other graph types were deemed (negative). Gold standard SOM diagnosis was the intraoperative existence of fluid (positive), and subsequently absence of fluids was (negative) Intraoperative findings were matched with the preoperative tympanometry results, proper statistical schedules were performed and tympanometry sensitivity and specificity were calculated. Results: The study included 139 patients: 90 patients are male (64.7%) and 49 are female (35.3%) with mean age of 5.2 year (SD=2.1). The most common complaint was hearing loss in 77 patient (55.4%). Type B tympanometry found in 113 patients (82.5%) and fluid was found in 111 patients (79.9%). The sensitivity and specificity of Type B tympanometry: 88.2% and 80.7% respectively. Statistical tests found significant findings with P value < 0.05. Conclusions: SOM is common in age group 3-7years. History of hearing loss along with dull tympanic membrane and type B tympanometry strongly suggest SOM. However, in our study we found out that Type B graph highly suggests SOM, while the absence of this graph not necessarily rule out fluid collections. So Physicians should be aware while interpreting tympanometry graphs and evaluate these results in the context of patients’ history and examination. In order to enhance SOM diagnosis, we suggest combining Pneumatic otoscopy findings with Tympanometry graphs. This could be a future research topic: the addition value of Pneumatic otoscopy to Tympanometry graphs in the diagnosis of SOM.

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Sichel, Jean-Yves, Yerucham Priner, Gregory Barshtein, Samuel Weiss, Ron Eliashar, Haya Levi, and Josef Elidan. "Characteristics of the Type B Tympanogram Can Predict the Magnitude of the Air-Bone Gap in Otitis Media with Effusion." Annals of Otology, Rhinology & Laryngology 112, no. 5 (May 2003): 450–54. http://dx.doi.org/10.1177/000348940311200512.

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Tympanometry is well established as a means of assessing the presence of fluid in the middle ear. The type B tympanogram is usually considered a unique entity. However, its shape may vary from a rounded type B with a “pseudopeak” to a completely flat response. The aim of this study was to compare the characteristics of the B curve (maximum admittance, tympanometric peak pressure, and area under the curve) to the viscosity of the middle ear fluid and to the air-bone gap (ABG). In 67 children (93 ears) who underwent ventilation tube insertion, no correlation was found between the viscosity of the middle ear fluid and the characteristics of the B curve. However, these characteristics were able to differentiate between a low ABG (0 to 20 dB) and a high ABG (>20 dB). A statistical difference was also found for the three parameters (maximum admittance, p < .0025; pressure, p < .025; and area under the curve, p < .0005). Tympanometry may be used as an objective measure to estimate the extent of conductive hearing loss, especially in young children.

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Harris, Paula K., Kathleen M. Hutchinson, and Joseph Moravec. "The Use of Tympanometry and Pneumatic Otoscopy for Predicting Middle Ear Disease." American Journal of Audiology 14, no. 1 (June 2005): 3–13. http://dx.doi.org/10.1044/1059-0889(2005/002).

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Purpose: Otitis media is the most common condition diagnosed by pediatricians and is estimated to affect approximately 70% of the pediatric population. The goal of this study was to evaluate the effectiveness of otoscopy and multifrequency tympanometry (MFT) for diagnosis of otitis media in children. Method: Twenty-one children, age 1 to 10 years, who were seeking medical treatment for suspected middle ear disease were selected to participate. Data were collected prior to myringotomy to determine the sensitivity and specificity rates of the following otologic and audiologic measures: (a) pneumatic otoscopy, (b) conventional tympanometry, and (c) MFT. For this study, the "gold standard," myringotomy, was used along with pneumatic otoscopy to determine the effectiveness, sensitivity, and specificity of conventional 226-Hz tympanometry, 678-Hz tympanometry, and 1000-Hz tympanometry to predict middle ear disease. Results: The diagnoses provided with pneumatic otoscopy and tympanometry were both similar, agreeing in diagnosis 80%–100% of the time. The diagnoses from 678-Hz and 1000-Hz tympanometry were nearly equal and proved to detect abnormality at a higher rate. Conclusions: MFT is recommended on a routine basis with children having a history of otitis media, or else abnormal or notched 226-Hz tympanograms. Further research with a larger sample size will illuminate the possible predictive potential of MFT in otitis media.

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KOBAYASHI, TOSHIMITSU, and TAKUJI OKITSU. "Forward-backward tracing tympanometry." Nippon Jibiinkoka Gakkai Kaiho 88, no. 11 (1985): 1580–87. http://dx.doi.org/10.3950/jibiinkoka.88.1580.

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Margolis, Robert H., Patricia L. Schachem, Lisa L. Hunter, and Carolyn Sutherland. "Multifrequency Tympanometry in Chinchillas." International Journal of Audiology 34, no. 5 (January 1995): 232–47. http://dx.doi.org/10.3109/00206099509071916.

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Haggard, M. P., and M. E. Lutman. "Appropriate attitudes to tympanometry." Journal of Laryngology & Otology 104, no. 2 (February 1990): 172–73. http://dx.doi.org/10.1017/s0022215100112198.

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31

Holte, Lenore, and Robert H. Margolis. "Contemporary research in tympanometry." Current Opinion in Otolaryngology & Head and Neck Surgery 10, no. 5 (October 2002): 387–91. http://dx.doi.org/10.1097/00020840-200210000-00011.

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Kobayashi, Toshimitsu, Takuji Okitsu, and Tomonori Takasaka. "Forward–Backward Tracing Tympanometry." Acta Oto-Laryngologica 104, sup435 (January 1987): 100–106. http://dx.doi.org/10.3109/00016488709107357.

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33

Sapozhnikov, Ya M., N. A. Daikhes, A. S. Machalov, V. L. Karpov, and A. O. Kuznetsov. "Use of the broadband tympanometry in audiological screening at newborns and at premature newborns with the different term of gestation." Russian Otorhinolaryngology 19, no. 5 (2020): 76–82. http://dx.doi.org/10.18692/1810-4800-2020-5-76-82.

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The possibilities of the broadband tympanometry in audiological screening at newborns and at premature newborns with the different term of a gestation are studied. In view of the presence of age restrictions to application of the classical tympanometry at a frequency of probing tone of 226 Hz at children of the first year of life application of the broadband tympanometry is reasonable. Registration of the broadband tympanometry within audiological screening of newborns and children of the first year of life and also at premature newborns with different age of a gestation increases efficiency of diagnostics and allows to reduce amount of false positive results.

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Calandruccio, Lauren, Tracy S. Fitzgerald, and Beth A. Prieve. "Normative Multifrequency Tympanometry in Infants and Toddlers." Journal of the American Academy of Audiology 17, no. 07 (July 2006): 470–80. http://dx.doi.org/10.3766/jaaa.17.7.2.

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Multifrequency tympanometry data were measured multiple times between the ages of four weeks and two years from 33 infants/toddlers. Tympanograms were also measured from 33 adult participants. Tympanograms recorded with five probe-tone frequencies (226, 400, 630, 800, and 1000 Hz) were classified using the Vanhuyse et al model classification system (Vanhuyse et al, 1975). Admittance at +200 daPa (Y200) and middle ear admittance (YME) were calculated. The proportion of Vanhuyse et al patterns in infants and toddlers was different than in adults, especially for younger ages. YME and Y200 both increased with age. YME and Y200 data for all infant/toddler groups were significantly lower than adult values at all of the tested probe-tone frequencies. These data can be used as a guide in the clinic to assess normal tympanometric values for infants and toddlers.

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Effat, Kamal G. "Otoscopic appearances and tympanometric changes in narghile smokers." Journal of Laryngology & Otology 118, no. 10 (October 2004): 818–21. http://dx.doi.org/10.1258/0022215042450706.

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Narghile (water-pipe) smoking requires the generation of significant negative intrapharyngeal pressure, which may be transmitted to the middle ear through the Eustachian tube. A total of 80 ears from regular narghile smokers were examined otoscopically and by tympanometry. Seventy ears from heavy cigarette smokers were similarly examined and served as a control group. There was a highly significant increase in the prevalence of atticretractions (P < 0.01) in the narghile smokers. The tympanometric changes were not significantly different between the two groups (P > 0.05).

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Taylor, Carmen L., and Rebecca P. Brooks. "Screening for Hearing Loss and Middle-Ear Disorders in Children Using TEOAEs." American Journal of Audiology 9, no. 1 (June 2000): 50–55. http://dx.doi.org/10.1044/1059-0889(2000/001).

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The purpose of this research was to obtain the sensitivity and specificity of transient evoked otoacoustic emission (TEOAE) screening procedures compared with conventional audiometric pure-tone screening and tympanometry. Pass/refer values were obtained from a group of 297 ears of 152 preschool and school-aged children, 3 to 8 years of age. The sensitivity and specificity of the TEOAE screenings compared with the pure-tone screenings were 81% and 95%, respectively. The sensitivity and specificity of TEOAE screenings compared with tympanometric screenings were 60% and 91%, respectively.

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Nguyen Tu, The, Trinh Nguyen Luu, and Tuyen Tran Thi Kim. "STUDY THE CLINICAL FEATURES, TYMPANOMETRY AND EVALUTE THE TREATMENT RESULTS ADENOIDECTOMY." Volume 8 Issue 6 8, no. 6 (December 2018): 50–58. http://dx.doi.org/10.34071/jmp.2018.6.7.

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Objective: Determined the clinical features, tympanometry of children who have adenoid hypertrophy operated and evalute the treatment reults adenoidectomy. Material and method: 56 patients were diagnosed adenoid hypertrophy, who have tympanometry operated adenoidectomy at Hue University of Medicine and Pharmacy. Methods are cross sectional and propective studies. Results: Percentage of male (64.3%), female (35.7%). The most common age group is > 3-6 years old (46.4%). Main reason for being hospitalized is nasal discharge (48.2%). Funtional symtoms: nasal discharge (98.2%), nasal obstruction (96.4%). Endoscopy: adenoids grade 3 (53.6%), adenoids grade 2 (26.8%), adenoids grade 4 (14.3%), adenoids grade 1 (5.3%). 33% tympanograme type A, 27.7% tympanograme type C, 26.8% tympanograme type B, 12.5% tympanograme type As. After 6 weeks, results through funtional symtoms: nasal discharge (14.3%), nasal obstruction (8.9%). There aren’t adenoids grade 3 and 4, tympanometry in 90 ears without tympanostomy tube, 83.4% tympanograme type A, 8.9% tympanograme type C, 4.4% tympanograme type As, 3.3% tympanograme type B. Conclusions: Treatment of adenoid hypertrophy by adenoidectomy have good result about clinical and tympanometry. Key words: adenoid hypertrophy, tympanometry

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Yockel, Norma J. "A Comparison of Audiometry and Audiometry With Tympanometry to Determine Middle Ear Status in School-Age Children." Journal of School Nursing 18, no. 5 (October 2002): 287–92. http://dx.doi.org/10.1177/10598405020180050801.

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Otitis media with effusion is the most common cause of fluctuating hearing loss in children. Pure-tone audiometry is the current mandated standard to determine hearing loss in public-school children in most states. Students who fail pure tone audiometry are at risk for otitis media with effusion because it is asymptomatic. Tympanometry, which assesses middle ear status, is used to detect hidden otitis media with effusion. This longitudinal study evaluated pure tone audiometry and tympanometry in preschool and elementary children ( n = 141). Results found 12 children (23 ears) who failed either a second threshold or tympanometry. The study also showed that a greater number of ears were identified with otitis media with effusion ( n = 19) by using pure tone audiometry and tympanometry than by using pure tone audiometry alone ( n = 4).

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Shukla, Anuj Kumar, S. K. Kanaujia, Sandeep Kaushik, and Nishant Saurabh Saxena. "Tympanometry and computed tomography measurement of middle ear volumes in patients with unilateral chronic otitis media." International Journal of Otorhinolaryngology and Head and Neck Surgery 7, no. 4 (March 24, 2021): 609. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20211181.

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<p class="abstract"><strong>Background: </strong>Tympanometry and computed tomography (CT) measurement of middle ear volume in patients with unilateral chronic otitis media.</p><p class="abstract"><strong>Methods: </strong>The prospective study was conducted on 50 patients of diagnosed unilateral chronic otitis media showing clinical symptoms which affect quality of life. Patients who were fulfilling inclusion criteria after screening were selected for study. We studied patients who had a unilateral tympanic membrane (TM) perforation and a normal TM in the contralateral ear which act as control group to estimate the ME volume in the lesioned ear. Further we have compared pre and postoperative middle ear volume (measured by CT and tympanometry) in control & diseased ear to correlate middle ear volume results obtained by CT and Tympanometry.</p><p class="abstract"><strong>Results: </strong>The mean value of MEV measured by tympanometry and CT were (1.343±0.580) and (1.106±0.380) respectively (Figure 1). Volume measurement by tympanometry is higher as compared to volume measured by CT in lesioned ear, hence tympanometry measured volume in diseased ear were higher that measured by CT which is closer to normal values in both normal and Diseased ears. Also hearing shows improvement in diseased ear after surgery due to restoration of middle ear volume closer to normal.</p><p class="abstract"><strong>Conclusions:</strong> It was concluded in our study that CT is more reliable investigation for middle ear volume measurement as compared to Tympanometry in diseased as well as normal ears.</p>

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Pau, Hans Wilhelm, Christoph Punke, and Tino Just. "Tympanometric experiments on retracted ear drums – does tympanometry reflect the true middle ear pressure?" Acta Oto-Laryngologica 129, no. 10 (January 2009): 1080–87. http://dx.doi.org/10.1080/00016480802555629.

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Park, Moo Kyun. "Clinical Applications of Wideband Tympanometry." Korean Journal of Otorhinolaryngology-Head and Neck Surgery 60, no. 8 (August 21, 2017): 375–80. http://dx.doi.org/10.3342/kjorl-hns.2017.00605.

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42

Van Balen, F. A. M., A. M. Aarts, and R. A. De Melker. "Tympanometry by general practitioners: reliable?" International Journal of Pediatric Otorhinolaryngology 48, no. 2 (May 1999): 117–23. http://dx.doi.org/10.1016/s0165-5876(99)00014-2.

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Margolis, Robert H., Karel J. Van Camp, Richard H. Wilson, and Wouter L. Creten. "Multifrequency Tympanometry in Normal Ears." International Journal of Audiology 24, no. 1 (January 1985): 44–53. http://dx.doi.org/10.3109/00206098509070096.

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44

Eliopoulos, P. N. "Tympanometry in ossicular discontinuity/otosclerosis." Journal of Laryngology & Otology 105, no. 4 (April 1991): 331. http://dx.doi.org/10.1017/s0022215100115890.

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45

Wiley, Terry L., and Kathryn A. Barrett. "Test-Retest Reliability in Tympanometry." Journal of Speech, Language, and Hearing Research 34, no. 5 (October 1991): 1197–206. http://dx.doi.org/10.1044/jshr.3405.1197.

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Test-retest reliability for tympanometric measures was evaluated across five sessions in 20 subjects with normal hearing and normal middle-ear function. Tympanograms were obtained on each ear for probe frequencies of 226, 678, and 1000 Hz using both ascending and descending directions of pressure change. Across all conditions, the tympanometric measure that consistently demonstrated the highest test-retest reliability was compensated static acoustic admittance. Test-retest correlations for peak compensated static acoustic admittance measures were higher than those for ambient measures across all probe frequencies and both directions of pressure change; the differences in correlations for peak and ambient measures, however, reached significance only for 226-Hz conditions. Across-session correlations for tympanogram width did not differ significantly for measures referenced to the lowest tympanogram tail and those referenced to +200 daPa.

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46

Chen, Lin, and Yun‐Hua Shen. "A computational model for tympanometry." Journal of the Acoustical Society of America 99, no. 6 (June 1996): 3558–65. http://dx.doi.org/10.1121/1.414954.

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47

Demir, Emine, Metin Celiker, Elif Aydogan, Gokce Aydin Balaban, and Engin Dursun. "Wideband Tympanometry in Meniere’s Disease." Indian Journal of Otolaryngology and Head & Neck Surgery 72, no. 1 (July 25, 2019): 8–13. http://dx.doi.org/10.1007/s12070-019-01709-8.

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Hanks, Wendy D., and Martin Robinette. "Cost Justifications for Multifrequency Tympanometry." American Journal of Audiology 2, no. 3 (November 1993): 7–8. http://dx.doi.org/10.1044/1059-0889.0203.07.

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MFT has the potential to become the standard of care when dealing with possible middle ear pathologies. By applying those applications appropriate to the individual practice, and with a reasonable marketing effort, the cost of MFT-capable equipment should be readily recoverable. Finally, and most importantly, MFT is being shown in the current literature to be a better diagnostic tool than traditional tympanometry and to improve the level of care being provided to many clients by the audiologist and the physician. In my mind, this alone justifies the expenditure.

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Margolis, Robert H., and Hortensia G. Goycoolea. "Multifrequency Tympanometry in Normal Adults." Ear and Hearing 14, no. 6 (December 1993): 408–13. http://dx.doi.org/10.1097/00003446-199312000-00006.

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Holte, Lenore. "Aging Effects in Multifrequency Tympanometry." Ear and Hearing 17, no. 1 (February 1996): 12–18. http://dx.doi.org/10.1097/00003446-199602000-00002.

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