TYPANOMETRY EVALUATION
Tympanometry is a diagnostic test used to assess the function of the middle ear and the mobility of the eardrum (tympanic membrane). This evaluation helps identify conditions that may affect hearing, such as fluid in the middle ear, eustachian tube dysfunction, perforation of the eardrum, or otosclerosis.
During the tympanometry evaluation, a small probe is inserted into the ear canal. The device produces a series of pressure changes and measures how the eardrum responds to these changes. The results are displayed on a graph called a tympanogram, which indicates the pressure level at which the eardrum moves most efficiently.
Key Components of Tympanometry:
Impedance Measurement: The examination assesses the impedance (resistance) of the tympanic membrane during variations in air pressure, helping to determine the presence of any middle ear disorders.
Types of Tympanograms:
Type A: Normal middle ear pressure and compliance, indicating healthy ear function.
Type B: Flat curve, suggesting fluid in the middle ear or a perforated eardrum.
Type C: Negative pressure, often indicating eustachian tube dysfunction.
Interpretation of Results: Based on the tympanogram, audiologists can ascertain the status of the middle ear and recommend further tests or treatments if necessary.
Tympanometry is non-invasive, painless, and takes only a few minutes to complete. It is an essential part of a comprehensive audiological evaluation, particularly for children or individuals experiencing hearing difficulties. Regular tympanometry assessments can help monitor changes in middle ear health over time, providing crucial information for effective management and treatment of hearing-related issues.
