Wideband Reflectance in Normal Caucasian and Chinese School-Aged Children and in Children with Otitis Media with Effusion

Abstract

A preliminary set of normative ER data have been generated for a pediatric population between the ages of 5 and 7 yrs, which were significantly different from previously gathered normative adult ER data. In this study, pediatric normative data were warranted for testing children, but ethnic-specific norms were not required to detect middle ear pathology and changes in middle ear status. WBR shows promise as a clinical diagnostic tool for measuring the mechanoacoustic properties of the middle ear and the changes that result in the presence of negative middle ear pressure or MEE.

Time–frequency decomposition of click evoked otoacoustic emissions in children

“…The fastest decrease in CEOAE levels appear in children between birth and 2e4 years of age (Kon et al, 2000;Norton and Widen, 1990;Prieve et al, 1997). This progressive decrease can be partly explained by mechanoacoustical changes in the external and middle ear transmission characteristics, which change until at least 6 years of age (Beers et al, 2010;Hunter et al, 2008;Keefe and Levi, 1996). In this study, CEOAE levels in 5e10 year old children and adults were not significantly different.…”

Predictions of middle-ear and passive cochlear mechanics using a finite element model of the pediatric ear

“…These differences would affect the stiffness matrix in the FE model. Beers et al (2010) compared normal pediatric ER data (average age of 6.15 years) with normal adult ER data obtained by Shahnaz and Bork (2006). The results of Beers et al showed that ER was larger (corresponding to a smaller EA) in ears of Caucasian children than in adults at frequencies below 2 kHz.…”

“…These measures are used in research and clinical audiology with both adults and young children to differentiate between normal ears and ears with specific middle-ear disorders (Keefe et al, 1993;Feeney et al, 2003;Allen et al, 2005;Beers et al, 2010;Ellison et al, 2012;Hunter et al, 2013). EA is the fraction of incident energy absorbed by the ear at a probe inserted in a mid-canal location.…”

Medidas de imitância acústica de banda larga com estímulo chirp e tom puro em lactentes com normalidade de orelha média

“…there is only one published study that analyzed wideband power reflectance in neonates with 27 to 78 hours of life (12) . Also, previous studies have shown a significant difference when comparing ethnic (13,14) and age groups (15) . Thus.…”