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How Do You Interpret Tympanogram Results?
How do you interpret Tympanogram results? The results of a tympanogram can be confusing. The tympanometer measures the volume of the ear canal. This volume should be close to the same for both ears. Sometimes, a tympanometer will show a low volume because the ear is blocked with ear wax. Other times, a high volume may be indicative of a blocked grommet or perforated tympanic membrane. The volume should fit the shape and appearance of the curve. If it does not, the procedure must be repeated to exclude an artifact. To learn how to interpret the test results, you can go to https://www.adventear.com/how-to-read-a-tympanogram/.
The tympanometer records the pressure and tracings a person hears. In interpreting a tympanogram, the doctor will determine the size and shape of each eardrum. The width of a tympanometric pressure interval is measured in daPa. The clinician will compare the results to normative data to determine normal ranges for the patient's eardrum size.
A tympanogram may show an abnormality in any one of the three parts of the middle ear. Typically, the most sound is reflected back to the probe from a stiff tympanic membrane. However, a normal tympanogram might also show a middle ear problem. A doctor may need to order other tests to determine the cause of the abnormality.
If the tympanogram tracing is flat and has a flat tymp, this means that the ear is not filled with fluid. In other words, the tympanogram is flat. When these two factors are combined, a flat tymp means that the eardrum is stiff and the ear canal volume is too high, making it difficult to determine which one is the culprit.
Another aspect of the tympanogram that should be considered is the mass. If the admittance vector is 90 degrees or greater in adults, then this indicates a mass pathology. Figure 7 shows a typical example of a mass-controlled tympanogram. The mass increases can be seen when the tympanometric shapes are greater than the two-component, two-frequency signal.
A tympanogram provides a graphical representation of the eardrum's response to changes in air pressure in the ear canal. Sound waves activate the eardrum, and part of the sound is reflected. A tympanogram can also assess the functioning of the Eustachian tube and the middle ear. Middle ear pressure, also known as tympanometric peak pressure, should be within 50 to 50 daPA.
A normal tympanogram result is a type A, which shows the middle ear is functioning properly. The maximum height of the curve occurs at a pressure of zero daPa. The ECV is between 0.06 and 2.0 cm3. An abnormal type B tympanogram result is associated with middle ear fluid or an AOM. An abnormal type B tympanogram can also be a sign of an ear infection, which should be addressed immediately.
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