2024 Early Hearing Detection & Intervention Conference
March 17-19, 2024 • Denver, CO
| Examining Relationships between AABR and Frequency-Specific TEOAE Screening Outcomes within a Two-Tier Newborn Hearing Screening Protocol
Examining Relationships between AABR and Frequency-Specific TEOAE Screening Outcomes within a Two-Tier Newborn Hearing Screening Protocol
Two-technology and two-tier newborn hearing screening (NHS) protocols utilize a combination of otoacoustic emission (OAE) and Automated-Auditory Brainstem Response (AABR) test technologies. For such NHS protocols, referrals are made based on varying combinations of OAE and AABR outcomes. Differences between OAE and AABR, in terms of sensitivity to subject- or environmental noise and/or to the presence/degree of temporary conductive dysfunction, are responsible for the varying screening outcomes between the two technologies. Notwithstanding those differences, OAE and AABR assess different aspects of the auditory function and, when used in combination, may convey unique information that could inform improved referral paradigms.
The overall goal of this work is to closely examine patterns of transient-evoked OAE (TEOAE) and AABR outcomes while controlling for TEOAE noise levels. Specific objectives are as follows:
(1) To evaluate frequency-specific change in TEOAE measures from day-1 compared to day-2. It is hypothesized that frequency-dependent improvement in TEOAEs will emerge, dependent upon presumed types of temporary conductive dysfunction on day-1. (2) To describe differences between same-day frequency-specific TEOAE and AABR screening outcomes. It is hypothesized that TEOAEs are more sensitive to hearing loss configurations [across frequency] than AABR.
To achieve these objectives, we analyzed screening outcomes since August 2023 from the NHS screening program at the University of Louisville Hospital, in which a two-tier NHS protocol is employed. Data collection included AABR pass/fail outcomes, test quality measures (electrode impedances, noise, etc.), and TEOAE response, noise, and SNR levels at center-frequencies 1400, 2000, 2800, and 4000 Hz. Descriptive analyses were conducted with and without controlling for TEOAE noise levels.
Preliminary analyses indicate changes in TEOAE response levels from day-1 to day-2 are frequency-dependent. As well, AABR outcomes correlate with high-frequency TEOAE pass/fail outcomes, although the noise floor levels have a more predominant role at lower frequency bands.
- Identify reasons that screening an infant with both TEOAE and AABR may result in different combinations of pass/fail outcomes.
- Describe frequency-specific changes in TEOAEs response levels from day-1 to day-2.
- Explain the role of noise floor levels on frequency-specific TEOAE pass/fail outcomes in relationship to AABR outcomes.
Presentation:
3478265_16400YanaEstes.pdf
Handouts:
3478265_16400YanaEstes.pdf
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Yana Estes
(Primary Presenter), University of Louisville, ypclar01@louisville.edu;
Yana Estes is a third-year Doctoral Student of Audiology at the University of Louisville. She completed her Bachelor’s of Science degree in Communications Sciences and Disorders at Western Carolina University. She will begin her 4th-year externship at UNC Health on their Pediatrics Team in May 2024. Research interests include newborn hearing screening protocols and outcomes. In addition to research, Yana holds the position of a newborn hearing screener at the University of Louisville Hospital. Yana has an upward of 200+ hours of newborn hearing screening experience.
ASHA DISCLOSURE:
Financial -
No relevant financial relationship exists.
Nonfinancial -
No relevant nonfinancial relationship exists.
AAA DISCLOSURE:
Financial -
No relevant financial relationship exists.
Nonfinancial -
No relevant nonfinancial relationship exists.
Hammam AlMakadma
(Co-Author), University of Louisville, ha.almakadma@louisville.edu;
Dr. Hammam AlMakadma is an assistant professor in the Department of Otolaryngology, Head Neck Surgery and Communicative Disorders at the University of Louisville (UofL). His area of research is audiological diagnostics and newborn hearing screening, with expertise in measures such as otoacoustic emissions and wideband immittance. Dr. AlMakadma’s research is currently funded by the William Demant Foundation. He is director of the Middle Ear Diagnostic Research Lab at UofL, and the Newborn Hearing Screening Program at University of Louisville Hospital. He is a member of the EHDI advisory board for the State of Kentucky.
ASHA DISCLOSURE:
Financial -
• Receives Grants for Other activities from William Demant Foundation.
Nonfinancial -
No relevant nonfinancial relationship exists.
AAA DISCLOSURE:
Financial -
Financial relationship with William Demant Foundation.
Nature: Research Grant.
Nonfinancial -
No relevant nonfinancial relationship exists.