Wideband tympanometry (WBT) is an emerging hearing test that is available on the Titan tympanometer, but still lacks adoption.
With this resource, we hope to provide some clarity on the test and how it can benefit you and your patients.
We’ll cover the following:
Wideband tympanometry, also known as wideband acoustic immittance (WAI), is a branch of tympanometry that repeats a click stimulus very quickly to test the frequency range of 226 Hz to 8000 Hz.
This has clear diagnostic benefits, such as an improved ability to identify otitis media, otosclerosis, and other middle ear infections.
“The wideband tympanometry feature has proven to be clinically beneficial in our busy ENT setting. We have found that the wideband-averaged tympanograms produce a more consistent and clearer picture of the related pathology. Once the physicians understood the concept, they have come to rely on the wideband-averaged tympanograms – especially when the conventional 226 Hz tympanograms are questionable.” - Jon Schee, Audiologist, Minneapolis, US.
Truth be told there are many benefits with wideband tympanometry, also evident by the case studies below.
But here are four of the main benefits.
By repeating the click stimulus across the whole frequency range, you get over 100 tympanograms in a single sweep, which are produced at the same time it would take to generate a single tympanogram.
You get clear results with wideband-averaged tympanograms. The benefit of taking an average is not only that you include information for many frequencies, but also the fact that the measurement is less sensitive to noise or patient movement.
With wideband tympanometry, it is easy to establish if otitis media with effusion (OME) is present in the middle ear.
Applying wideband tympanometry, you can examine the middle ear beyond PE tubes.
“Wideband absorbance can provide extra information of middle ear function when tympanometry is inconclusive, which improves the identification of middle ear pathologies.” - Dr. Sree Aithal, Audiologist, Queensland, Australia.
Watch the three short videos below to learn more about how to interpret your wideband tympanometry results.
This video tutorial discusses how to inspect and assess the quality of wideband tympanometry results to be confident with interpretation.
This video tutorial provides an overview of how to analyze wideband tympanometry results to identify different middle ear pathologies.
This video tutorial provides guidance on using wideband tympanometry for the purposes of differential diagnosis.
“Wideband absorbance is a valuable clinical tool in difficult-to-test patients such as children with Down’s syndrome.” - Dr. Lisa Hunter, Professor and Scientific Director, University of Cincinnati, US.
This series of videos take you deeper into the benefits of wideband tympanometry and explain how to interpret your test results. Presented by Amanda Goodhew, BSc (Hons) MSc Audiology, and Lillian Nielsen, MSc Technical Audiology.
Learn what test results may indicate otosclerosis.
In this case, the picture changes dramatically once diving into wideband tympanometry.
OAE would yield a pass in this patient, but wideband tympanometry may suggest separate issues in each ear.
A rather interesting and complex case in a difficult-to-test patient.
In this case, wideband tympanometry helps to identify SSCD in a 66-year-old patient with an extensive case history.
This patient has a history of noise exposure and is anxious about her hearing deteriorating. But is anything wrong at all?
 Thais Antonelli Diniz Hein, Stavros Hatzopoulos, Piotr Henryk Skarzynski and Maria Francisca Colella-Santos (March 29, 2017). Wideband Tympanometry, Advances in Clinical Audiology, Stavros Hatzopoulos, IntechOpen, DOI: 10.5772/67155. Available from: https://www.intechopen.com/books/advances-in-clinical-audiology/wideband-tympanometry.
 Stuppert L, Nospes S, Bohnert A, Läßig AK, Limberger A, Rader T. Clinical benefit of wideband-tympanometry: a pediatric audiology clinical study. Eur Arch Otorhinolaryngol. 2019 Sep;276(9):2433-2439. doi: 10.1007/s00405-019-05498-2. Epub 2019 Jun 7. PMID: 31175454.
 Leigh Martin (March 1, 2019). Multifrequency tympanometry. ENT & AUDIOLOGY NEWS. 2019 Mar/Apr;28(1). Available from: https://www.entandaudiologynews.com/features/audiology-features/post/multifrequency-tympanometry.
 Şule Kaya, Betül Çiçek Çınar, Merve Özbal Batuk, Burçe Özgen, Gonca Sennaroğlu, Gülsüm Aydan Genç, Levent Sennaroğlu. Wideband tympanometry findings in inner ear malformations. Auris Nasus Larynx. 2020 Apr;47(2):220-226. ISSN 0385-8146. doi: 10.1016/j.anl.2019.09.001.
 Hougaard, D.D., Lyhne, N.M., Skals, R.K. et al. Study on wideband tympanometry and absorbance within a Danish cohort of normal hearing adults. Eur Arch Otorhinolaryngol. 2020 Mar;277:1899-1905. Doi:10.1007/s00405-020-05909-9.
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