Multi-Frequency Tympanometry and Evidence-Based Practice Tympanometry is a safe and quick method for assessing middle ear function. Currently, tympanometry is typically conducted at a conventional probe tone frequency of 226 Hz. Tympanometry performed using this frequency has proven valid in identifying a variety of middle ear disorders (Lilly, 1984). However, standard 226 Hz tympanometry often ... Article
Article  |   September 01, 2007
Multi-Frequency Tympanometry and Evidence-Based Practice
Author Affiliations & Notes
  • Navid Shahnaz
    School of Audiology & Speech Sciences, University of British Columbia, Vancouver, BC
Article Information
Hearing Disorders / Articles
Article   |   September 01, 2007
Multi-Frequency Tympanometry and Evidence-Based Practice
SIG 6 Perspectives on Hearing and Hearing Disorders: Research and Diagnostics, September 2007, Vol. 11, 2-12. doi:10.1044/hhd11.1.2
SIG 6 Perspectives on Hearing and Hearing Disorders: Research and Diagnostics, September 2007, Vol. 11, 2-12. doi:10.1044/hhd11.1.2
Tympanometry is a safe and quick method for assessing middle ear function. Currently, tympanometry is typically conducted at a conventional probe tone frequency of 226 Hz. Tympanometry performed using this frequency has proven valid in identifying a variety of middle ear disorders (Lilly, 1984). However, standard 226 Hz tympanometry often fails to distinguish normal middle ears from ears with pathologies that affect the ossicular chain (Browning, Swan, & Gatehouse, 1985; Colletti, 1975, 1976; Lilly; Shahnaz & Polka, 1997). It can also fail to distinguish normal middle ears from ears with pathologies in newborns and young infants below 6 months of age (Balkany, Berman, Simmons, & Jafec, 1978; Calandruccio, Fitzgerald, & Prieve, 2006; Holte, Margolis, & Cavanaugh, 1991; Hunter & Margolis, 1992; Kei et al., 2003; Marchant et al., 1986; Margolis, Bass-Ringdahl, Hanks, Holte, & Zapala, 2003; Paradise, Smith, & Bluestone, 1976).
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