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Sims MH, Plyler E, Harkrider A, McLucas K. Detection of Deafness in Puppies Using a Hand-Held Otoacoustic Emission Screener. J Am Anim Hosp Assoc 2017; 53:198-205. [PMID: 28535131 DOI: 10.5326/jaaha-ms-6528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to evaluate the use of a hand-held otoacoustic emissions screener to detect deafness in puppies. Specifically, distortion product otoacoustic emissions were recorded from 34 puppies (both sexes) of a variety of breeds, from 6-10 wk of age, and the results were compared to brainstem auditory evoked responses (BAER) recorded from the same puppies. Recordings were obtained from both ears in awake or lightly anesthetized puppies, and the results from each ear were compared. In all 62 ears that had normal BAERs, the distortion product otoacoustic emissions screener gave a response of "Pass." The three puppies that had flat BAER recordings in one or both ears provided a screener result of "Refer." In two ears with unusual BAERs (waveforms with reduced amplitudes and prolonged latencies) and a "Refer" response from the screener, there was compacted debris in one external ear canal, and the other ear canal was normal. The screener technology has proven application in human infants and is an attractive alternative to BAER testing in puppies because of expense and ease of use.
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Affiliation(s)
- Michael H Sims
- From the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine (M.H.S.), Department of Small Animal Clinical Sciences, College of Veterinary Medicine (K.M.), Department of Audiology and Speech Pathology, College of Health Professions, Health Science Center (E.P., A.H.), University of Tennessee, Knoxville, Tennessee
| | - Erin Plyler
- From the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine (M.H.S.), Department of Small Animal Clinical Sciences, College of Veterinary Medicine (K.M.), Department of Audiology and Speech Pathology, College of Health Professions, Health Science Center (E.P., A.H.), University of Tennessee, Knoxville, Tennessee
| | - Ashley Harkrider
- From the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine (M.H.S.), Department of Small Animal Clinical Sciences, College of Veterinary Medicine (K.M.), Department of Audiology and Speech Pathology, College of Health Professions, Health Science Center (E.P., A.H.), University of Tennessee, Knoxville, Tennessee
| | - Karen McLucas
- From the Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine (M.H.S.), Department of Small Animal Clinical Sciences, College of Veterinary Medicine (K.M.), Department of Audiology and Speech Pathology, College of Health Professions, Health Science Center (E.P., A.H.), University of Tennessee, Knoxville, Tennessee
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Strain GM, McGee KA. Distortion product otoacoustic emissions in young adult and geriatric cats. Vet J 2017; 221:34-37. [PMID: 28283078 DOI: 10.1016/j.tvjl.2017.01.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/25/2017] [Accepted: 01/30/2017] [Indexed: 12/25/2022]
Abstract
Recordings of distortion product otoacoustic emissions (DPOAEs) were taken from 15 geriatric cats (mean age ± standard deviation, SD, 13.6 ± 2.7 years; range 10.2-19.4 years) and 12 young adult control cats (mean ± SD 4.6 ± 0.5 years; range 3.4-5 years) to identify frequency-specific age-related changes in cochlear responses. Recordings were performed for primary frequencies from 2 to 12 kHz in 2 kHz increments. Cats were considered to be geriatric > 11.9 ± 1.9 years of age. Brainstem auditory evoked response (BAER) recordings were also made for subjective comparison with DPOAE responses. No differences in DPOAE response amplitudes were observed at any tested frequency in geriatric cats compared to control cats, reflecting an apparent absence of loss of cochlear outer hair cells along the length of the cochlea. No linear regression relationships were found for DPOAE response amplitude versus age in geriatric cats, despite the progressive nature of age-related hearing loss in other species. The absence of reductions in response at any of the tested frequencies in cats within the age span where cats are considered to be geriatric indicates that age-related hearing loss, if it does develop in cats, begins later in the life span of cats than in dogs or human beings.
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Affiliation(s)
- George M Strain
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Kain A McGee
- Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, USA
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Distortion product otoacoustic emissions in geriatric dogs. Vet J 2016; 216:101-6. [DOI: 10.1016/j.tvjl.2016.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 05/30/2016] [Accepted: 07/17/2016] [Indexed: 01/22/2023]
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Bach JP, Lüpke M, Dziallas P, Wefstaedt P, Uppenkamp S, Seifert H, Nolte I. Auditory functional magnetic resonance imaging in dogs--normalization and group analysis and the processing of pitch in the canine auditory pathways. BMC Vet Res 2016; 12:32. [PMID: 26897016 PMCID: PMC4761139 DOI: 10.1186/s12917-016-0660-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 12/04/2015] [Indexed: 11/10/2022] Open
Abstract
Background Functional magnetic resonance imaging (fMRI) is an advanced and frequently used technique for studying brain functions in humans and increasingly so in animals. A key element of analyzing fMRI data is group analysis, for which valid spatial normalization is a prerequisite. In the current study we applied normalization and group analysis to a dataset from an auditory functional MRI experiment in anesthetized beagles. The stimulation paradigm used in the experiment was composed of simple Gaussian noise and regular interval sounds (RIS), which included a periodicity pitch as an additional sound feature. The results from the performed group analysis were compared with those from single animal analysis. In addition to this, the data were examined for brain regions showing an increased activation associated with the perception of pitch. Results With the group analysis, significant activations matching the position of the right superior olivary nucleus, lateral lemniscus and internal capsule were identified, which could not be detected in the single animal analysis. In addition, a large cluster of activated voxels in the auditory cortex was found. The contrast of the RIS condition (including pitch) with Gaussian noise (no pitch) showed a significant effect in a region matching the location of the left medial geniculate nucleus. Conclusion By using group analysis additional activated areas along the canine auditory pathways could be identified in comparison to single animal analysis. It was possible to demonstrate a pitch-specific effect, indicating that group analysis is a suitable method for improving the results of auditory fMRI studies in dogs and extending our knowledge of canine neuroanatomy.
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Affiliation(s)
- Jan-Peter Bach
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Matthias Lüpke
- Fachgebiet für Allgemeine Radiologie und Medizinische Physik, Stiftung Tierärztliche Hochschule Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
| | - Peter Dziallas
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Patrick Wefstaedt
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
| | - Stefan Uppenkamp
- Medizinische Physik, Universität Oldenburg, 26111, Oldenburg, Germany.
| | - Hermann Seifert
- Fachgebiet für Allgemeine Radiologie und Medizinische Physik, Stiftung Tierärztliche Hochschule Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
| | - Ingo Nolte
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559, Hannover, Germany.
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Scheifele PM, Clark JG. Electrodiagnostic Evaluation of Auditory Function in the Dog. Vet Clin North Am Small Anim Pract 2012; 42:1241-57. [DOI: 10.1016/j.cvsm.2012.08.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gonçalves R, McBrearty A, Pratola L, Calvo G, Anderson TJ, Penderis J. Clinical evaluation of cochlear hearing status in dogs using evoked otoacoustic emissions. J Small Anim Pract 2012; 53:344-51. [PMID: 22647213 DOI: 10.1111/j.1748-5827.2012.01229.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Evoked otoacoustic emission testing is the preferred test in human patients for sensorineural deafness screening in neonates and cochlear outer hair cell function monitoring in adults. This study evaluated evoked otoacoustic emission testing for cochlear function assessment in dogs within a clinical setting. METHODS Two populations of anaesthetised dogs were included. In group 1 the evoked otoacoustic emission response was compared to the brainstem auditory evoked response in 10 dogs having hearing assessment. Group 2 comprised 43 presumed normal dogs, in which the suitability of two types of evoked otoacoustic emissions, transient-evoked and distortion product otoacoustic emissions, were evaluated (brainstem auditory evoked response was not performed in this group). RESULTS Valid transient-evoked otoacoustic emission and distortion-product otoacoustic emission responses were successfully recorded within the clinical setting and correctly identified deaf and hearing ears. Within presumed healthy dogs, normal otoacoustic emission response was demonstrated in more than 80% of dogs using a single, short distortion-product otoacoustic emission run and in 78% of dogs with valid transient-evoked otoacoustic emission responses using a series of three repeated transient-evoked otoacoustic emission short runs. CLINICAL SIGNIFICANCE Transient-evoked otoacoustic emission and distortion-product otoacoustic emission testing provided a rapid, non-invasive frequency-specific assessment of cochlear function. Transient-evoked otoacoustic emission and distortion product otoacoustic emission testing is suitable as a screening procedure to detect loss of cochlear function in dogs, although further investigation is needed.
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Affiliation(s)
- R Gonçalves
- School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Bearsden Road, Glasgow
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McBrearty A, Penderis J. Transient Evoked Otoacoustic Emissions Testing for Screening of Sensorineural Deafness in Puppies. J Vet Intern Med 2011; 25:1366-71. [DOI: 10.1111/j.1939-1676.2011.00794.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 06/13/2011] [Accepted: 08/02/2011] [Indexed: 11/30/2022] Open
Affiliation(s)
- A. McBrearty
- School of Veterinary Medicine; College of Medical; Veterinary and Life Sciences; University of Glasgow; Glasgow; UK
| | - J. Penderis
- School of Veterinary Medicine; College of Medical; Veterinary and Life Sciences; University of Glasgow; Glasgow; UK
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Schemera B, Blumsack JT, Cellino AF, Quiller TD, Hess BA, Rynders PE. Evaluation of otoacoustic emissions in clinically normal alert puppies. Am J Vet Res 2011; 72:295-301. [DOI: 10.2460/ajvr.72.3.295] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Distortion-product otoacoustic emissions in the common marmoset (Callithrix jacchus): parameter optimization. Hear Res 2008; 243:57-68. [PMID: 18586424 DOI: 10.1016/j.heares.2008.05.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2007] [Revised: 04/14/2008] [Accepted: 05/14/2008] [Indexed: 11/22/2022]
Abstract
Distortion-product otoacoustic emissions (DPOAEs) were measured in a New World primate, the common marmoset (Callithrix jacchus). We determined the optimal primary-tone frequency ratio (f(2)/f(1)) to generate DPOAEs of maximal amplitude between 3 and 24 kHz. The optimal f(2)/f(1), determined by varying f(2)/f(1) from 1.02 to 1.40 using equilevel primary tones, decreased with increasing f(2) frequency between 3 and 17 kHz, and increased at 24 kHz. The optimal f(2)/f(1) ratio increased with increasing primary-tone levels from 50 to 74 dB SPL. When all stimulus parameters were considered, the mean optimal f(2)/f(1) was 1.224-1.226. Additionally, we determined the effect of reducing L(2) below L(1). Decreasing L(2) below L(1) by 0, 5, and 10 dB (f(2)/f(1)=1.21) minimally affected DPOAE strength. DPOAE levels were stronger in females than males and stronger in the right ear than the left, just as in humans. This study is the first to measure OAEs in the marmoset, and the results indicate that the effect of varying the frequency ratio and primary-tone level difference on marmoset DPOAEs is similar to the reported effects in humans and Old World primates.
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Sockalingam R, Filippich L, Charles B, Murdoch B. Cisplatin-induced ototoxicity and pharmacokinetics: preliminary findings in a dog model. Ann Otol Rhinol Laryngol 2002; 111:745-50. [PMID: 12184599 DOI: 10.1177/000348940211100816] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The early effects of a clinical dose of cisplatin (100 mg/m2) on distortion-product otoacoustic emissions (DPOAE) thresholds and the relationship between DPOAE threshold shifts and changes in plasma concentrations of filterable and total platinum (Pt) following infusion of cisplatin in a dog model were investigated. The DPOAE thresholds (based on input-output function) were measured 2 days before a single high dose of cisplatin administration, and compared with measurements recorded 2 and 4 days after infusion. The results revealed DPOAE thresholds to be elevated by 4 days after the administration of cisplatin. However, this elevation could not be correlated with plasma concentrations of filterable and total Pt, which showed little variation over the 48-hour postinfusion period between animals. The present study demonstrated that DPOAE thresholds have the potential to be used as an indicator of cisplatin-induced ototoxicity, and cisplatin-induced ototoxicity could not be explained by plasma Pt kinetics in individual animals.
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Affiliation(s)
- Ravi Sockalingam
- Department of Speech Pathology and Audiology, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
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