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Academic literature on the topic 'Immittance testing'
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Journal articles on the topic "Immittance testing"
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McGrath, Andrew P., and Elias M. Michaelides. "Use of Middle Ear Immittance Testing in the Evaluation of Patulous Eustachian Tube." Journal of the American Academy of Audiology 22, no. 04 (2011): 201–7. http://dx.doi.org/10.3766/jaaa.22.4.2.
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Background: Patulous Eustachian tube is the uncommon condition of a persistently open Eustachian tube, which causes the disturbing symptoms of autophony and respiratory-synchronous tinnitus. We review this condition and propose a specific evaluation protocol that can be performed quickly and easily using standard audiologic test equipment. We have used this protocol in the evaluation of a number of patients and will discuss our findings. Purpose: To establish a standardized protocol for the audiologic evaluation of patulous Eustachian tube using a standard clinical tympanometer and to establish norms with respect to tympanic membrane movement during breathing tasks. Research Design: Quantitative analysis of test results obtained during clinical evaluation of patients referred for suspected patulous Eustachian tube during 2008 and 2009. Study Sample: The cohort was 35 individuals including 25 patients referred for suspected patulous Eustachian tube and 10 control (normal) patients. Of the total group, 25 individuals were female, 10 were male, and the overall age range was 8 yr to 82 yr. Data Collection and Analysis: Patients underwent audiologic and otologic testing including quantitative measurement of middle ear compliance during breathing and nasal endoscopy. Two tympanometers were used to assess middle ear compliance: the Grason-Stadler Instruments Model 33 and Tympstar. Endoscopy was performed using either a Storz Endoskope Xenon Nova 175 or a Pentax EPM 1000. Results of middle ear immittance tests performed during breathing tasks were compared with results of endoscopy as well as the impressions of the examining physician. Magnitude of middle ear compliance was examined for mean and standard deviation, and the control/normal group results were compared with those of individuals complaining of symptoms suggestive of patulous Eustachian tube. Results: We found that slightly greater than 75% of individual ears with patulous Eustachian tube exhibited middle ear compliance greater than 0.07 ml during breathing tasks. All ears with patulous Eustachian tube exhibited a respiratory-synchronous compliance pattern during breathing tasks. Of individual ears without patulous Eustachian tube, 97% exhibited middle ear compliance during breathing of less than 0.07 ml with no respiratory-synchronous pattern. Conclusions: Measurement of middle ear compliance during breathing appears to be a sensitive and specific tool in the examination of patulous Eustachian tube, particularly when both the magnitude of compliance and the pattern of compliance are considered.
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Totta, Tatiane, Giselda Santiago, Eduardo Sanches Gonçales, Sandra de Oliveira Saes, and Giédre Berretin-Felix. "Auditory characteristics of individuals with temporomandibular dysfunctions and dentofacial deformities." Dental Press Journal of Orthodontics 18, no. 5 (2013): 70–77. http://dx.doi.org/10.1590/s2176-94512013000500013.
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OBJECTIVE: To investigate whether there is any relationship between otological as well as vestibular symptoms, audiological findings and type of temporomandibular disorder (articular, muscular and mixed); and to check the distribution of the temporomandibular disorders (TMD) dysfunction degree in the research population. METHODS: A retrospective study involving 30 patients of both sexes, aged between 18 and 49 years old, diagnosed with TMD and dentofacial deformities, who were subject to clinical evaluation (muscle palpation, auscultation of temporomandibular joint during mandibular motion and measurement of jaw movement), audiological testing (pure tone audiometry and immittance testing) and two questionnaires, one on otological and vestibular symptoms and the other on TMD anamnesis. Based on both the anamnesis questionnaire and the clinical assessment, the subjects were divided according to the type and degree of TMD dysfunction (mild, moderate and severe), and compared regarding the occurrence of auditory signs and symptoms, vestibular symptoms and audiological findings according to TMD type. RESULTS: The anamnesis questionnaire demonstrated higher prevalence (83.33%) of severe TMD. Subjects with mixed TMD had more complaints about hypoacusis than those with muscular TMD (p < 0.05). The results showed no change in either audiological and immittance testing for all assessed individuals. CONCLUSION: Otological symptoms are present in subjects with TMD and dentofacial deformities, regardless of the classification of TMD (articular, muscular or mixed). Those with mixed TMD may have higher incidence of complaints about hypoacusis than subjects with muscular TMD. Further studies are needed to investigate the relationship between otological symptoms and the different types of TMD.
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DiGiovanni, Jeffrey J., and Padmaja Nair. "Spontaneous Recovery of Sudden Sensorineural Hearing Loss: Possible Association with Autoimmune Disorders." Journal of the American Academy of Audiology 17, no. 07 (2006): 498–505. http://dx.doi.org/10.3766/jaaa.17.7.5.
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A 46-year-old white male diagnosed with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS) was seen for audiological testing 15 minutes following a sudden onset hearing loss in the right ear. The test battery included pure-tone audiometry, word-recognition testing, speech-recognition threshold (SRT) testing, immittance testing, and distortion-product otoacoustic emissions (DPOAE) testing. Testing revealed a sensorineural hearing loss in the right ear. Shortly after testing, the patient indicated that his condition had improved. Testing was repeated, and the second round of tests revealed normal hearing in both ears. Four days later, a follow-up test again indicated normal hearing in both ears. Possible connections of this brief occurrence of idiopathic hearing loss with the patient's medical conditions are discussed. Specifically, symptoms were consistent with a transient ischemic attack (TIA) affecting his right cochlea in the stria vascularis region, resulting in a temporary, sensorineural hearing loss. No residual effects were observed clinically.
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Śliwa, Lech, Krzysztof Kochanek, W. Wiktor Jedrzejczak, Kacper Mrugała, and Henryk Skarżyński. "Measurement of Wideband Absorbance as a Test for Otosclerosis." Journal of Clinical Medicine 9, no. 6 (2020): 1908. http://dx.doi.org/10.3390/jcm9061908.
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The purpose of this study was to investigate the effectiveness of wideband energy absorbance in diagnosing otosclerosis by comparing the differences in acoustic absorbance between otosclerotic and normal ears. Exactly 90 surgically confirmed otosclerotic ears were included in the test group. The control group consisted of 126 matched normal-hearing subjects. The Titan hearing test platform (Interacoustics) was used for absorbance and acoustic immittance tests. Energy absorbance, measured at tympanometric peak pressure, was analyzed in the range 226–8000 Hz. Differences between normal and otosclerotic ears were analyzed in quarter-octave bands. Wideband absorbance, i.e., absorbance averaged over the 226–2000 Hz band, and resonance frequency were calculated and compared between normal and otosclerotic ears. Significant differences between the absorbance of normal and otosclerotic ears were found, especially at low and middle frequencies. No significant effect of ear side or gender was observed. For average wideband absorbance and resonance frequency, less pronounced (although significant) differences were found between normal and otosclerotic ears. Measurement of peak-pressure energy absorbance, averaged over a frequency band around 650 Hz, provides a valid criterion in testing for otosclerosis. The test is highly effective, with a sensitivity and specificity of over 85% and area under receiver operating characteristic curve above 0.9. Average wideband absorbance can also be used, but its effectiveness is lower. Other immittance-related measures are considerably less effective.
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Bistritz, Y. "Stability testing of 2-D discrete linear systems by telepolation of an immittance-type tabular test." IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 48, no. 7 (2001): 840–46. http://dx.doi.org/10.1109/81.933325.
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Sanfins, Milaine Dominici, Luisa Frata Bertazolli, Piotr H. Skarzynski, Magdalena Beata Skarzynska, Caroline Donadon, and Maria Francisca Colella-Santos. "Otoacoustic Emissions in Children with Long-Term Middle Ear Disease." Life 10, no. 11 (2020): 287. http://dx.doi.org/10.3390/life10110287.
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Introduction: Otoacoustic emissions (OAEs) evaluate the functional status of the cochlea. Repeated otitis media (OM) can cause changes in the peripheral structures of the auditory system, and, in this way, middle ear infection may irreversibly damage the middle ear, or even the cochlea. Objectives: To analyze the results of transiently evoked otoacoustic emissions (TEOAEs) and distortion product otoacoustic emissions (DPOAEs) in individuals with a history of OM. Method: Participants with 8 to 16 years of schooling were split into two groups: a control group (CG) of 50 subjects who had no history of otological disease and an experimental group (EG) of 50 subjects who had a history of recurrent otitis in childhood and had consequently undergone myringotomy to insert bilateral ventilation tubes. All children underwent basic audiological assessment (tonal audiometry, speech audiometry, and immittance testing) and otoacoustic emission testing (TEOAEs and DPOAEs). Results: There were no significant differences between the groups when audiometrically tested via air and bone conduction. OAEs were found in all CG subjects. For the EG, there were no TEOAE responses in 17 ears and no DPOAEs in nine ears; response amplitudes were lower at all frequencies. The emission level and the signal-to-noise ratio were statistically different between the two groups, and OAEs in the EG were statistically smaller compared to the GC. Conclusion: In the EG, responses were more likely to be absent and were of statistically smaller amplitude compared to the CG. A history of repeated OM apparently interferes with the generation and transmission of TEOAEs and DPOAEs.
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Norrix, Linda W., and David Velenovsky. "Clinicians' Guide to Obtaining a Valid Auditory Brainstem Response to Determine Hearing Status: Signal, Noise, and Cross-Checks." American Journal of Audiology 27, no. 1 (2018): 25–36. http://dx.doi.org/10.1044/2017_aja-17-0074.
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Purpose The auditory brainstem response (ABR) is a powerful tool for making clinical decisions about the presence, degree, and type of hearing loss in individuals in whom behavioral hearing thresholds cannot be obtained or are not reliable. Although the test is objective, interpretation of the results is subjective. Method This review provides information about evidence-based criteria, suggested by the 2013 Newborn Hearing Screening Program guidelines, and the use of cross-check methods for making valid interpretations about hearing status from ABR recordings. Results The use of an appropriate display scale setting, templates of expected response properties, and objective criteria to estimate the residual noise, signal level, and signal-to-noise ratio will provide quality data for determining ABR thresholds. Cross-checks (e.g., immittance measures, otoacoustic emissions testing, functional indications of a child's hearing) are also needed to accurately interpret the ABR. Conclusions Using evidence-based ABR signal detection criteria and considering the results within the context of other physiologic tests and assessments of hearing function will improve the clinician's accuracy for detecting hearing loss and, when present, the degree of hearing loss. Diagnostic accuracy will ensure that appropriate remediation is initiated and that children or infants with normal hearing are not subjected to unnecessary intervention.
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Panagiotopoulos, Georgios K. "Monitoring Ototoxicity through Otoacoustic Emissions. Present, COVID-19, and Future Related Insights." ENT Open Access Open Journal I, no. 1 (2020): 19–23. http://dx.doi.org/10.33169/ent.enatoaoj-i-105.
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The administration of certain drugs is directly related to inner ear damage. Due to the potential of these elements and their usage, more extensive monitoring of adverse effects should be implemented. That is why, baseline evaluation for ototoxicity must be adequately extensive and should embrace conventional PTA thresholds, HFA, immittance measurements, speech audiometry in quiet and in noise, and assessment of OAEs. Health care specialists have reasonably quested other test modalities for ototoxic monitoring, in their effort to eliminate behavioral – subjective testing and even more establishing further improvements in test efficacy. To iterate, drug induced ototoxicities typically are initially presented as OHC dysfunction, and the exact correlation between present OAEs and functional OHCs is fairly well demonstrated. This study provides recent evidence regarding OAEs’ strategic advantages as a part of an ototoxicity monitoring program, as they can detect earlier ototoxic induced thresholds shifts, do not need patient’s own cooperation and are substantially easy to perform and quick. This fact is particularly crucial during present COVID-19 pandemic where ototoxic agents such as chloroquine and hydroxychloroquine are routinely administered in many patients who may be too sick and haggard to perform adequately enough in conventional PTA or similar, behavioral based exams.
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Sahoo, Subhasmita, and Aparna Nandurkar. "Performance of normal hearing school age children on Hindi minimal pair test." Journal of Otolaryngology-ENT Research 12, no. 1 (2020): 5–10. http://dx.doi.org/10.15406/joentr.2020.12.00450.
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Speech perception is the process of transforming a continuously changing acoustic signal into discrete linguistic units and is a developmental process having several aspects i.e. Pattern perception, Perception of phonemic contrasts, Vowel & Sentence perception. There is no standardized minimal pair test material available for testing Hindi school aged children and no normative data for this test is available in Indian scenario. Such normative data will act as a reference for using of Hindi Minimal Pair Test (HMPT) test with children with hearing impairment in clinical situation. Hence, this study is warranted. The aim of study is to obtain normative data for school aged children on HMPT of speech perception. A total of 200 participants were included in the study. Each subject underwent Otoscopic examination, Oto Acoustic Emission, Pure tone audiometry, Immittance audiometry and Screening for CAPD. This study indicates perception of minimal pair contrast significantly improves as the age increases. P value obtained for comparison between males and females is 0.62 which is greater than 0.05 suggesting no significant difference between mean scores of male and female participants. For age comparison obtained p value is 0.00, suggesting a significant difference between the two age groups. P value of 0.051 for interaction suggests no significant interaction between age and sex statistically.
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Schweitzer, Vanessa G., Ilaaf Darrat, Brad A. Stach, and Elizabeth Gray. "Sudden Bilateral Sensorineural Hearing Loss following Polysubstance Narcotic Overdose." Journal of the American Academy of Audiology 22, no. 04 (2011): 208–14. http://dx.doi.org/10.3766/jaaa.22.4.3.
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Background: Auditory disorders associated with substance abuse are rare. Hearing loss secondary to heroin and hydrocodone abuse has been described variously as not always responsive to steroid management, as not always reversible, and in some cases, as nonresponsive profound sensorineural hearing loss requiring cochlear implantation. We present a case of a teenager with sudden-onset moderate to severe bilateral sensorineural hearing loss after documented polysubstance “binging.” The hearing loss improved substantially after high-dose steroid and vasoactive therapy. Purpose: The purpose of this report is to describe the hearing disorder of a patient who had awakened with a bilateral severe hearing loss following a night of recreational drug abuse. Research Design: Case report and review of the literature. Data Collection and Analysis: The subject of this report is an 18-yr-old patient with a history of substance abuse. Data collected were magnetic resonance /computed tomography brain imaging; metabolic, infectious disease, and autoimmune evaluation; and extensive audiologic evaluation, including pure-tone and speech audiometry, immittance measures, distortion-product otoacoustic emissions, and auditory brainstem response testing. Serial audiograms were collected for 10 mo following the onset of symptoms. Results: Two days of polysubstance abuse (heroin, benzodiazepine, alcohol, and crack [smoked cocaine]) resulted in moderately severe sensorineural hearing loss bilaterally. The loss responded to a 1 mo course of high-dose prednisone and a 10 mo course of pentoxifylline. Hearing sensitivity subsequently improved, leaving only residual high-frequency sensorineural hearing loss. Conclusions: This case report highlights the importance of “recreational” drug abuse in the evaluation of sudden hearing loss. Potential etiologies include altered pharmacokinetics, vascular spasm/ischemia, encephalopathy, acute intralabyrinthine hemorrhage, and genetic polymorphisms of drug-metabolizing enzymes.
Dissertations / Theses on the topic "Immittance testing"
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Habig, Amanda. "The clinical value of immittance testing in the identification of middle ear pathology in South African mineworkers." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-10182005-085508.
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Carr, Patricia I. "Development of an Audiological Test Procedure Manual for First Year Au.D. Students." Scholar Commons, 2001. https://scholarcommons.usf.edu/etd/1535.
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A student manual of audiological procedures with accompanying laboratory assignments does not presently exist at the University of South Florida (USF). In the first year of the four year Au.D. program at USF, students are enrolled in Audiology Laboratory Clinic I, II, and III, in consecutive semesters. Groups of four to six students meet weekly for a 3-1/2 hour clinical laboratory session to receive training in test instruction, test procedures, test application, and test interpretation. The purpose of the first year Audiology laboratory clinic sessions is to prepare the student for clinical experience in year two of the Au.D program at USF. In preparation for these laboratory sessions, it was discovered that materials related to test procedures are currently scattered throughout a variety of texts, journals, manuals, educational software, videos, and web sites. No one source contains all the needed information on any given test procedure. In addition, specific procedures outlined in documents [American Standards Institute (ANSI) and the American Speech-Language-Hearing Association (ASHA)] are not consistently used by the different sources. Thus, there is no standard procedural manual containing laboratory assignments that lead to the development of appropriate clinical testing skills by a first year Au.D student. A standard test procedural manual for pure tone audiometry, speech audiometry, and immittance testing, with assignments, was developed to assist in the cultivation of the students testing skills. The manual contains test history, purposes, procedures, scoring guidelines, interpretations, and limitations for each test. Laboratory assignments include practice exercises using a computer simulator, classmates, and volunteers. Each assignment is accompanied by discussion questions to enhance and augment student understanding. A reference list is available to obtain further information on each topic area. This manual will be made available to the first year Au.D student as well as to the advanced Au.D student who would benefit from an all-inclusive, updateable source providing the best possible clinical procedures. The final product will be available for a fee in a notebook type format to allow for the inclusion of additional topics and updates as the standards of practice in Audiology change.