Normative wideband reflectance measures in healthy neonates

Aithal, Sreedevi; Kei, Joseph; Driscoll, Carlie; Khan, Asaduzzaman

doi:10.1016/j.ijporl.2012.09.024

Cited by 29 publications

(75 citation statements)

References 31 publications

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“…In studies to determine normative data of WBT in groups of healthy newborns and children, ear side and gender were found to have no effect on tympanometric findings [6,15] . In terms of right-left ear side and gender effects the results of the present study correlate with those of previous studies in the literature.…”

Section: Discussionmentioning

confidence: 93%

Wideband Tympanometry Normative Data for Different Age Groups in Turkish Population

Özgür

Müjdeci²,

Terzi³

et al. 2016

Int Adv Otol

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OBJECTIVE:Studies on the use of wideband tympanometry (WBT) for the evaluation of middle ear pathologies have been increasing gradually in recent years. However, studies regarding normative data of WBT are not sufficient. The aim of this study was to determine normative values of WBT for different age groups in Turkish population. MATERIALS and METHODS:One hundred fifty volunteers from five age-related groups were included in this study. Values of resonance frequency (RF), absorbance percentage according to frequency, maximum absorbance ratio, and maximum absorbance frequency were obtained using WBT.Measurements were recorded at a pressure of 0 decapascal (daPa) using a sound stimulus given at 90±3 decibel sound pressure level (dB SPL). RESULTS:The RF was detected to be significantly lower only in the group of subjects in the age range of 0-1 month. The absorbance value at 250 Hz was detected to be significantly higher in the age groups of 0-1 month and 1 month-2 years than in the other groups. CONCLUSION:We believe that the findings obtained in this study would be helpful in determining normative data regarding WBT; by the determination of this normative data, the clinical use of WBT would become widespread.

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Section: Discussionmentioning

confidence: 93%

Wideband Tympanometry Normative Data for Different Age Groups in Turkish Population

Özgür

Müjdeci²,

Terzi³

et al. 2016

Int Adv Otol

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“…While the use of single test alone may not be accurate, use of battery of tests may provide greater assurance of an efficient conductive pathway in newborns. Hence, a test battery approach was used in the present study to evaluate the middle ear status [37]. However, it is acknowledged A c c e p t e d M a n u s c r i p t 22 that the test battery reference standard is not an ideal "gold standard" for detecting conductive conditions.…”

Section: Limitationsmentioning

confidence: 99%

Effects of ear canal static pressure on the dynamic behaviour of outer and middle ear in newborns

Aithal

Kei

Driscoll

et al. 2016

International Journal of Pediatric Otorhinolaryngology

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Please cite this article as: V. Aithal, J. Kei, C. Driscoll, M. Murakoshi, H. Wada, Effects of ear canal static pressure on the dynamic behaviour of outer and middle ear in newborns, International Journal of Pediatric Otorhinolaryngology (2015), http://dx.doi.org/10. 1016/j.ijporl.2015.12.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A c c e p t e d M a n u s c r i p t 3 healthy ears from ears with a conductive condition, but also provide information on the maturation aspects of the outer and middle ear in newborns.

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“…These reference standards are presented in Table 1. The reason for including a combination of tests as reference standards was the assumption that neonates who passed a battery of tests involving HFT, TEOAE and DPOAE were more likely to have a normal conductive pathway (outer and middle ear) than those who passed a single test (Aithal et al 2013). The pass/fail classification for the WBA measure was more complicated than that of other tests because of the large number of frequencies measured.…”

Section: Wideband Absorbancementioning

confidence: 99%

“…In the present study, WBA was measured at 16 single frequencies from 0.25 to 8 kHz in one-third octave intervals. Using the same equipment but different subjects, Aithal et al (2013) developed normative WBA data at the 16 frequencies for newborns using a pass in a test battery consisting of AABR, HFT, ASR, TEOAE and DPOAE as a reference standard. They suggested that this reference standard provided the best measure of outer and middle ear function without resorting to an invasive surgical procedure such as myringotomy.…”

Section: Wideband Absorbancementioning

confidence: 99%

“…They suggested that this reference standard provided the best measure of outer and middle ear function without resorting to an invasive surgical procedure such as myringotomy. The normative range of WBA at each frequency, as described by Aithal et al (2013), was used to determine pass/fail criteria for the neonates. WBA values at and above the 10 th percentile of the normative data were considered as a pass, whereas values below the 10 th percentile were considered as a fail.…”

Section: Wideband Absorbancementioning

confidence: 99%

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Wideband absorbance measures in neonates and young infants

Aithal¹

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Evaluation of middle ear status in young infants is a challenge in both screening and diagnostic contexts due to a lack of valid and objective tools of middle ear assessment . The standard tools used to determine the middle ear status in older children are neither efficient nor accurate in evaluating young infants.Wideband absorbance (WBA) is recommended as a tool for middle ear assessment in young infants due to its time efficiency, reliability, objectivity and ability WBA. The neonates were tested prior to their discharge from the hospital. In addition, a total of 36, 30, 33 and 30 infants were seen at 1, 2, 4, and 6 months of age, respectively. These infants were tested using HFT, DPOAE and WBA.The results revealed that conductive hearing loss was common among infants referred through NHS. Australian Aboriginal infants had significantly higher rates of middle ear pathology and conductive hearing loss at birth and showed poor resolution of middle ear pathology over time compared to non-Aboriginal infants. Use of a test of middle ear function (eg. WBA) as an adjunct to the screening tool to facilitate management and prioritisation of infants for further testing was recommended (Chapter Two). Normative ambient pressure WBA data were established for 66 neonates who passed a test battery of AABR, HFT, ASR, TEOAE and DPOAE tests. There was a significant difference in WBA across frequencies from 250 to 8000 Hz (Chapter Three). Test performance of WBA was compared across four single tests and five test battery reference standards in 192 neonates. The test performance of WBA against the test battery reference standards was better than that against single test reference standards (Chapter Four). Despite equal pass rates as determined by a test battery of HFT and DPOAE, the WBA of Aboriginal neonates who passed the test battery was significantly lower suggesting that Aboriginal neonates had more significant outer/middle ear conditions than Caucasian neonates. WBA appeared to be more sensitive to middle ear status than test battery comprising HFT and DPOAE (Chapter Five). In a cross sectional study of infants, developmental effects were evident during the first six months of life, with WBA reducing with age. Although data from the study could be used as reference standard for detecting middle ear disorders, further development of age-specific normative WBA was recommended (Chapter Six).

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Normative wideband reflectance measures in healthy neonates

Cited by 29 publications

References 31 publications

Wideband Tympanometry Normative Data for Different Age Groups in Turkish Population

Wideband Tympanometry Normative Data for Different Age Groups in Turkish Population

Effects of ear canal static pressure on the dynamic behaviour of outer and middle ear in newborns

Wideband absorbance measures in neonates and young infants

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