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Auteur Sreedevi Aithal |
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trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Faire une suggestion Affiner la rechercheEffect of ear canal pressure and age on wideband absorbance in young infants / Venkatesh Aithal ; Sreedevi Aithal ; Joseph Kei in International Journal of Audiology IJA, Vol. 56, n° 1-12 (January-December 2017)
Titre : Effect of ear canal pressure and age on wideband absorbance in young infants Type de document : Article Auteurs : Venkatesh Aithal ; Sreedevi Aithal ; Joseph Kei Année de publication : 2017 Article en page(s) : p. 346-355 Langues : Anglais (eng) Descripteurs : HE Vinci
Absorbance acoustique ; Conduit auditif externe (CAE) ; Oreille moyenne ; TympanométrieRésumé : The study investigated the effect of ear canal pressure and age on wideband absorbance (WBA) in healthy young infants.
Design: Using a cross-sectional design, WBA at 0.25 to 8?kHz was obtained from infants as the ear canal pressure was swept from?+200 to ?300 daPa. Study sample: The participants included 29 newborns, 9 infants each at 1 and 4 months and 11 infants at 6 months of age who passed distortion product otoacoustic emissions test. Results: In general, negative-ear canal pressures reduced WBA across the frequency range, while positive-ear canal pressures resulted in reduced WBA from 0.25 to 2?kHz and above 4?kHz with an increase in absorbance between 2 and 3?kHz compared to WBA at ambient pressure. The variation in WBA below 0.5?kHz, as the pressure was varied, was the greatest in newborns. But, the variation was progressively reduced in older infants up to the age of 6 months, suggesting stiffening of the ear canal with age. Conclusions: Significant changes in WBA were observed as a function of pressure and age. In particular, developmental effects on WBA were evident during the first six months of life.Accès : Contactez la bibliothèque d'Ixelles si le lien vers la ressource électronique ne fonctionne plus Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://www.tandfonline.com/doi/pdf/10. [...] Format de la ressource électronique : Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=210364
in International Journal of Audiology IJA > Vol. 56, n° 1-12 (January-December 2017) . - p. 346-355[article]Exemplaires (1)
Cote Support Localisation Section Disponibilité International journal of audiology IJA. Vol. 56, n° 1-12 (January-December 2017) Périodique papier Ixelles Rez Consultation sur place uniquement
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Titre : Eustachian Tube Dysfunction and Wideband Absorbance Measurements at Tympanometric Peak Pressure and 0 daPa Type de document : Article Auteurs : Sreedevi Aithal ; Venkatesh Aithal ; Joseph Kei ; Shane Anderson ; Simon Liebenberg Année de publication : 2019 Article en page(s) : p. 781-791 Langues : Anglais (eng) Descripteurs : HE Vinci
Absorbance acoustique ; Dysfonctionnement tubaire ; Trompe d'eustache ; TympanométrieRésumé : Bien que l' absorbance large bande (WBA) fournit des informations importantes sur le fonctionnement de l' oreille moyenne, il y a peu de recherches sur l'utilisation de WBA pour évaluer la dysfonction tubaire (ETD). À ce jour, WBA obtenu sous la condition sous pression n'a pas été utilisé pour évaluer ETD.
L'objectif de l'étude était de comparer WBA à 0 conditions daPa et pression maximale tympanométriques (TPP) dans les oreilles en bonne santé et les oreilles avec ETD.
Une conception étude transversale a été utilisée.
Un total de 102 A oreilles en bonne santé de 79 participants (âge moyen = 10,0 an) et 43 de l'oreille 32 patients avec ETD (âge moyen = 16,0 ans) ont été inclus dans cette étude en coupe transversale. WBA a été mesurée à 0 daPa (WBA 0 ) et TPP WBA au TPP (WBATPP ).
les résultats WBA ont été analysées à l' aide des statistiques descriptives et t -Tests avec la correction de Bonferroni. Une analyse de la variance des mesures répétées a été appliquée aux données.
WBA 0 était significativement plus faible dans le groupe ETD que dans le groupe témoin. La WBA 0 du groupe de contrôle montré un large pic entre 1,25 et 4 kHz, alors que la WBA 0 du groupe ETD a un pic compris entre 2,5 et 4 kHz. WBA TPP du groupe ETD approché des valeurs proches de celle du groupe témoin. Dans le groupe témoin, WBA TPP était seulement 0,06 à 0,09 supérieur à WBA 0, Alors que dans le groupe ETD, WBA TPP est 0,29 à 0,42 plus élevé que WBA 0 compris entre 0,6 et 1,5 kHz. Un motif différentiel de WBA au TPP par rapport à 0 daPa n'a été observée entre les oreilles et les oreilles avec ETD avec otite moyenne avec épanchement (OME) et de l'oreille moyenne pression négative (NMEP).DOI : 10.3766/jaaa.18002|1 Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=247360
in Journal of the American Academy of Audiology (JAAA) > Vol.30, n° 9 (October 2019) . - p. 781-791[article]Exemplaires (1)
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Titre : Predictive Accuracy of Wideband Absorbance at Ambient and Tympanometric Peak Pressure Conditions in Identifying Children with Surgically Confirmed Otitis Media with Effusion Type de document : Article Auteurs : Venkatesh Aithal ; Sreedevi Aithal ; Joseph Kei ; Shane Anderson ; David Wright Année de publication : 2020 Article en page(s) : p. 471-484 Langues : Anglais (eng) Descripteurs : HE Vinci
Enfant (6-12 ans) ; Oreille moyenne ; Otite ; Pression ; Tympanométrie ; Wideband absorbance (WBA)
Autres descripteurs
Test de performanceRésumé : Background
Wideband absorbance (WBA) measured at ambient pressure (WBAA) does not directly account for middle ear pressure effects. On the other hand, WBA measured at tympanometric peak pressure (TPP) (WBATPP) may compensate for the middle ear pressure effects. To date, there are no studies that have compared WBAA and WBATPP in ears with surgically confirmed otitis media with effusion (OME).
Purpose
The purpose of this study was to compare the predictive accuracy of WBAA and WBATPP in ears with OME.
Research Design
Prospective cross-sectional study.
Study Sample
A total of 60 ears from 38 healthy children (mean age = 6.5 years, SD = 1.84 years) and 60 ears from 38 children (mean age = 5.5 years, SD = 3.3 years) with confirmed OME during myringotomy were included in this study.
Data Collection and Analysis
Results were analyzed using descriptive statistics and analysis of variance. The predictive accuracy of WBAA and WBATPP was determined using receiver operating characteristics (ROC) analyses.
Results
Both WBAA and WBATPP were reduced in ears with OME compared with that in healthy ears. The area under the ROC (AROC) curve was 0.92 for WBAA at 1.5 kHz, whereas that for WBATPP at 1.25 kHz was 0.91. In comparison, the AROC for 226-Hz tympanometry based on the static acoustic admittance (Ytm) measure was 0.93.
Conclusions
Both WBAA and WBATPP showed high and similar test performance, but neither test performed significantly better than 226-Hz tympanometry for detection of surgically confirmed OME.DOI : 10.3766/jaaa.19012|1 Disponible en ligne : Oui/Non En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=261779
in Journal of the American Academy of Audiology (JAAA) > Vol.31, n° 7 (July/August 2020) . - p. 471-484[article]Exemplaires (1)
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Titre : Use of Wideband Acoustic Immittance in Neonates and Infants Type de document : Article Auteurs : Hammam A. AlMakadma, Auteur ; Sreedevi Aithal, Auteur ; Venkatesh Aithal, Auteur ; Joseph Kei, Auteur Année de publication : 2023 Article en page(s) : p. 29-45 Note générale : DOI: 10.1055/s-0043-1764200 Langues : Anglais (eng) Descripteurs : Autres descripteurs
Immitance acoustique
HE Vinci
Dépistage auditif du nouveau-né ; Surdité de transmission ; Wideband absorbance (WBA)Résumé : With widespread agreement on the importance of early identification of hearing loss, universal newborn hearing screening (UNHS) has become the standard of care in several countries. Despite advancements in screening technology, UNHS and early hearing detection and intervention programs continue to be burdened by high referral rates of false-positive cases due to temporary obstruction of sound in the outer/middle ear at birth. A sensitive adjunct test of middle ear at the time of screening would aid in the interpretation of screening outcomes, minimize unnecessary rescreens, and prioritize referral to diagnostic assessment for infants with permanent congenital hearing loss. Determination of middle ear status is also an important aspect of diagnostic assessment in infants. Standard single-frequency tympanometry used to determine middle ear status in infants is neither efficient nor accurate in newborns and young infants. A growing body of research has demonstrated the utility of wideband acoustic immittance (WAI) testing in both screening and diagnostic settings. Wideband power absorbance (WBA), a WAI measure, has been shown to be more sensitive than tympanometry in the assessment of outer/middle ear function in newborns. Furthermore, age-graded norms also support successful application of WBA in young infants. Despite its merits, uptake of this technology is low among pediatric audiologists and hearing screening health workers. This report describes normative data, methods for assessment and interpretation of WBA, test–retest variations, and other factors pertinent to clinical use of WAI in newborns and infants. Clinical cases illustrate the use of WAI testing in newborn and infant hearing assessment. Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=305933
in Seminars in hearing > Vol. 44, n°1 (February 2023) . - p. 29-45[article]
Titre : Wideband Absorbance in Ears with Retraction Pockets and Cholesteatomas : A Preliminary Study Type de document : Article Auteurs : Sreedevi Aithal ; Venkatesh Aithal ; Joseph Kei ; Shane Anderson Année de publication : 2020 Article en page(s) : p. 708-718 Langues : Anglais (eng) Descripteurs : HE Vinci
Cholestéatome ; Membrane du tympan ; Surdité de transmission ; Tympanométrie ; Wideband absorbance (WBA)Résumé : Objectives
The objective of this study was to describe wideband absorbance (WBA) findings in patients with cholesteatomas and retraction pockets (RPs).
Design
In this prospective study, tympanometry, audiometry, and wideband tympanometry (WBT) were performed on 27 ears with an RP (eight with epitympanic RP and 19 ears with mesotympanic RP), 39 ears with a cholesteatoma (23 ears with epitympanic and 16 ears with mesotympanic cholesteatomas [MCs]), and 49 healthy ears serving as controls.
Results
Mean WBA at ambient pressure (WBAamb) of both experimental groups was reduced significantly between 0.8 and 5 kHz relative to the control group. The difference between mean WBAamb and mean WBA at tympanometric peak pressure (WBATPP) was greater for the RP (0.12–0.16 between 0.5 and 1.5 kHz) than for the cholesteatoma group (0.03–0.11 between 0.6 and 3 kHz). Mean WBAamb of both epitympanic RP (ERP) and epitympanic cholesteatoma (EC) subgroups was significantly lower than that of the control group. Mean WBATPP of the ERP subgroup attained normal levels as per the control group, while mean WBATPP of EC subgroup was significantly lower than that of the control group at 0.8 to 1.5 kHz and 4 to 5 kHz. In contrast, both mesotympanic RP and MC subgroups demonstrated similar mean WBAamb and WBATPP values. No significant differences in WBAamb and WBATPP results between the RP and cholesteatomas groups were observed. Receiver operating characteristic (ROC) analyses indicated that the area under the ROC curve for distinguishing between the RP and cholesteatomas groups ranged from 0.44 to 0.60, indicating low accuracy in separating the two groups.
Conclusion
While it is not possible to distinguish between the RP and cholesteatomas groups based on the WBAamb and WBATPP results, it is potentially feasible to differentiate between the EC and ERP conditions. Further study using a large clinical sample is recommended to determine the sensitivity and specificity of the WBA test to identify the EC and ERP conditions.DOI : 10.1055/s-0040-1719130|1 Disponible en ligne : Oui/Non En ligne : https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejourn [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=267678
in Journal of the American Academy of Audiology (JAAA) > Vol.31, n° 10 (November/December 2020) . - p. 708-718[article]Exemplaires (1)
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