Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Tympanometry using a sweep-frequency probe tone and its clinical evaluation.

S Funasaka1, K Kumakawa

  • 1Department of Otolaryngology, Tokyo Medical College, Japan.

Audiology : Official Organ of the International Society of Audiology
|January 1, 1988
PubMed
Summary

A new tympanometric system analyzes sound pressure and phase angles to diagnose middle ear ossicular disorders. This method effectively differentiates ossicular discontinuity and fixation, aiding clinical diagnosis.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A rare case of acoustic neuroma extending from the cerebellopontine angle to the external auditory canal.

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia·2008
Same author

Subtonsillar placement of auditory brainstem implant.

Acta neurochirurgica. Supplement·2003
Same author

Factors influencing speech development in infants with cochlear implants.

Advances in oto-rhino-laryngology·2002
Same author

Evaluation of the performance in the Clarion cochlear implant users in Japan.

Advances in oto-rhino-laryngology·2002
Same author

[Speech perception ability in a patient with a 8-channel auditory brainstem implant].

Nihon Jibiinkoka Gakkai kaiho·2001
Same author

Intraperitoneal fluconazole for fungal peritonitis in CAPD: report of two cases.

Peritoneal dialysis international : journal of the International Society for Peritoneal Dialysis·2001

Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Diagnostic Imaging

Background:

  • Middle ear ossicular disorders, including discontinuity and fixation, significantly impact hearing function.
  • Accurate diagnosis of ossicular disorders is crucial for effective treatment and hearing rehabilitation.
  • Current diagnostic methods may have limitations in differentiating specific ossicular pathologies.

Purpose of the Study:

  • To introduce and evaluate a novel tympanometric system for diagnosing ossicular disorders.
  • To establish diagnostic criteria based on frequency-dependent sound pressure and phase angle measurements.
  • To assess the system's accuracy in differentiating ossicular discontinuity, malleus/incus fixation, and stapes fixation.

Main Methods:

  • A new tympanometric system was developed, maintaining constant external meatus air pressure at -200 daPa or 0 daPa.

Related Experiment Videos

  • A probe tone frequency sweep (220–2,500 Hz) was performed, measuring sound pressure (dB) and phase angle (degrees).
  • Differences in sound pressure and phase angle between the two pressure conditions were computed and analyzed using discriminant analysis on cadaver temporal bones and patient data.

    • Main Results:

    • Four key parameters from frequency-sound pressure and frequency-phase angle curves were identified as diagnostic criteria.
    • Normal parameter ranges were established from 50 healthy ears.
    • The system demonstrated high accuracy in diagnosing ossicular discontinuity (10/12) and malleus/incus fixation (5/6), with moderate accuracy for stapes fixation (12/22).

    Conclusions:

    • The novel tympanometric system provides distinct diagnostic parameters for ossicular discontinuity and fixation.
    • This system shows significant clinical utility in the diagnosis of middle ear ossicular disorders.
    • The generated curves and parameters offer a valuable tool for differentiating specific ossicular pathologies, improving diagnostic precision.