Pressurized Wideband Absorbance Findings in Healthy Neonates: A Preliminary Study

Wali, Hamzah A; Mazlan, Rafidah; Kei, Joseph

doi:10.1044/2017_jslhr-h-17-0120

Cited by 7 publications

(18 citation statements)

References 30 publications

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“…The present study demonstrated no significant differences between WBA TPP and WBA 0 at all frequencies, and mean WBA TPP was only 0.03 higher than mean WBA 0 at 1.25 and 1.5 kHz (see Figure 1). This finding contrasts with the findings of Wali et al (2017) who reported mean WBA TPP to be significantly higher than mean WBA 0 at 0.25, 0.4, 0.5, 1.25 and 1.6 kHz.…”

Section: Discussioncontrasting

confidence: 99%

“…In general, absorbance was highest between 1 and 2.5 kHz and lowest between 0.25 and 8 kHz. These results concur with the results reported by Wali et al (2017) and Aithal et al (2017) for both pressurised WBA conditions in neonates. Several studies have reported the frequency region between 0.8 and 2 kHz as being the most sensitive region to identify reduced middle-ear transmission and particularly relevant for middle ear assessments [4,5,9,14].…”

Section: Discussionsupporting

confidence: 93%

“…Several studies have reported the frequency region between 0.8 and 2 kHz as being the most sensitive region to identify reduced middle-ear transmission and particularly relevant for middle ear assessments [4,5,9,14]. There were several differences between the results of the present study and the study by Wali et al (2017) that can be attributed to procedural and biographical factors. The present study demonstrated no significant differences between WBA TPP and WBA 0 at all frequencies, and mean WBA TPP was only 0.03 higher than mean WBA 0 at 1.25 and 1.5 kHz (see Figure 1).…”

Section: Discussioncontrasting

confidence: 65%

“…While a few studies have reported comparison of WBA TPP with WBA amb (Sanford et al, 2009;Hunter et al, 2016), the difference between WBA TPP and WBA 0 is not well investigated in infants. Wali et al (2017) investigated WBA TPP and WBA 0…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Wideband Tympanometry Findings in Healthy Neonates

Aithal

Kei

et al. 2022

J Am Acad Audiol

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Objectives The objective of the present study was to describe pressurised wideband absorbance at tympanometric peak pressure (WBATPP) and 0 daPa (WBA0) in healthy Caucasian neonates. Subjects: A total of 249 ears from 249 neonates who passed a test battery of 1000-Hz tympanometry, distortion product otoacoustic emissions and automated auditory brainstem response were included in the study. Method: WBATPP and WBA0 were averaged in one-third octave frequencies from 0.25 to 8 kHz. Data were statistically analysed for effects of frequency, ear and gender. Results Normative WBATPP and WBA0 data obtained from healthy neonates are presented. There was no significant difference between WBATPP and WBA0 at all frequencies. Both WBATPP and WBA0 demonstrated a multi-peaked pattern with maxima of 0.80 and 0.72 at 1.25-1.5 and 6 kHz, respectively, and two minima of 0.45 and 0.49 at 0.4-0.5 kHz and 4 kHz, respectively. The effects of ear and gender were not significant for both WBA measures. Conclusion Pressurised WBATPP and WBA0 data were provided for healthy Caucasian neonates. They will be useful for assessment of middle ear function and assist in differentiating between conductive and sensorineural hearing losses in neonates.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 93%

Section: Discussioncontrasting

confidence: 65%

Section: Accepted Manuscriptmentioning

confidence: 99%

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Wideband Tympanometry Findings in Healthy Neonates

Aithal

Kei

et al. 2022

J Am Acad Audiol

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“…Test-retest reliability of WBT has been established, 1,2 and normative values are being developed for diverse pediatric patient populations. 2-6 When compared with traditional single-frequency tympanometry, WBT provides more information and demonstrates improved diagnostic potential for otitis media, middle ear effusion (MEE), and other pediatric conductive hearing–related pathologies, particularly at low-frequency ranges. 7-13…”

mentioning

confidence: 99%

Assessment of Pediatric Middle Ear Effusions With Wideband Tympanometry

Callaham

Newby

Saoji

et al. 2020

Otolaryngol.--head neck surg.

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Objective To determine if wideband tympanometry (WBT) can differentiate types of middle ear effusion (MEE): serous, mucoid, and purulent. Study Design Prospective cohort study. Setting Tertiary care children’s hospital. Methods Children who met American Academy of Otolaryngology–Head and Neck Surgery’s guidelines for ventilation tube insertion had WBT after anesthesia induction but before tympanotomy. MEE was categorized into 1 of 4 comparison groups: serous effusion, mucoid effusion, purulent effusion, or no effusion. WBT measurements were averaged to 16 one-third octave frequency bands, and comparison of the absorbance patterns for each MEE type was performed through a linear mixed effects model. Results A total of 118 children (211 ears) were included: 47 females (39.8%) and 71 males (60.2%). The mean age was 2.73 years (95% CI, 2.25-3.22); mean weight, 14.35 kg (95% CI, 12.85-15.85); and mean Z score, 1.13 (95% CI, –0.64 to 2.33). Effusions included 61 mucoid (28.9%), 30 purulent (14.2%), and 14 serous (6.6%), with 106 (50.2%) having no effusion. No significant differences were found for sex, race, age, weight, or Z score among the 4 types of effusion ( P < .05). WBT showed a significant difference in median absorption among the effusion groups ( P < .001), with a medium effect size of 0.35. Conclusions WBT has potential use to differentiate types of MEE and should be studied further as a tool for investigating how the natural history and management of serous and mucoid effusions may differ.

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Normative Wideband Acoustic Immittance Measurements in Caucasian and Aboriginal Children

Aithal

Kei

et al. 2019

Am J Audiol

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Purpose The aims of this study were to develop normative data for wideband acoustic immittance (WAI) measures in Caucasian and Australian Aboriginal children and compare absorbance measured at 0 daPa (WBA 0 ) and tympanometric peak pressure (TPP; WBA TPP ) between the 2 groups of children. Additional WAI measures included resonance frequency, equivalent ear canal volume, TPP, admittance magnitude (YM), and phase angle (YA). Method A total of 171 ears from 171 Caucasian children and 87 ears from 87 Aboriginal children who passed a test battery consisting of 226-Hz tympanometry, transient evoked otoacoustic emissions, and pure tone audiometry were included in the study. WAI measures were obtained under pressurized conditions using wideband tympanometry. Data for WBA 0 , WBA TPP , YM, and YA were averaged in one-third octave frequencies from 0.25 to 8 kHz. Results There was no significant ear effect on all of the 7 measures for both groups of children. Similarly, there was no significant gender effect on all measures except for WBA TPP in Aboriginal children. Aboriginal boys had significantly higher WBA TPP than girls at 1.5 and 2 kHz. A significant effect of ethnicity was also noted for WBA TPP at 3, 4, and 8 kHz, with Caucasian children demonstrating higher WBA TPP than Aboriginal children. However, the effect size and observed power of the analyses were small for both effects. Conclusion This study developed normative data for 7 WAI measures, namely, WBA 0 , WBA TPP , TPP, Veq, RF, YM, and YA, for Caucasian and Aboriginal children. In view of the high similarity of the normative data between Caucasian and Aboriginal children, it was concluded that separate ethnic-specific norms are not required for diagnostic purposes.

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Pressurized Wideband Absorbance Findings in Healthy Neonates: A Preliminary Study

Cited by 7 publications

References 30 publications

Wideband Tympanometry Findings in Healthy Neonates

Wideband Tympanometry Findings in Healthy Neonates

Assessment of Pediatric Middle Ear Effusions With Wideband Tympanometry

Normative Wideband Acoustic Immittance Measurements in Caucasian and Aboriginal Children

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