How do you interpret Tympanogram results?

1. Type A tympanogram indicates normal middle ear status.
2. Type AS tympanogram indicates a middle ear system that has a decreased mobility.
3. Type AD tympanogram has a curve that demonstrates a high compliance/ static admittance (Ya).
4. Type B tympanogram has a flattened curve with a low admittance.

What is TYMP 226 Hz?

Tympanometry is an examination used to test the condition of the middle ear, the mobility of the eardrum, and the conduction bones by creating variations of air pressure in the ear canal. A tone of 226 Hz is generated by the tympanometer into the ear canal, where the sound strikes the TM.

What does a type B Tympanogram mean?

Type B tympanograms are a flat line (Figure 2), which is consistent with middle ear pathology, such as fluid or infection behind the ear drum. This indicates negative pressure in the middle ear space, often consistent with sinus or allergy congestion, or the end-stages of a cold or ear infection.

What does an ear pressure test show?

Tympanometry is typically used to detect or rule out several things: the presence of fluid in the middle ear, a middle ear infection, a hole in the eardrum (perforation), or Eustachian tube dysfunction.

What is normal ear pressure?

Normal middle ear pressure should be somewhere between +50 to –150 dePa (mm water). The probe tip tone is directed to the tympanic membrane during the two seconds of the pressure change described above.

What is normal tympanometry?

Typically for children a volume range of 0.5 to 1.5 cc is typically considered normal, while for adults the range is 0.5 to 2.00 cc.

What does Type C TYMP mean?

Tympanogram tracings are classified as type A (normal), type B (flat, clearly abnormal), and type C (indicating a significantly negative pressure in the middle ear, possibly indicative of pathology).

How are the results of impedance audiometry determined?

Evaluating Results for Impedance Audiometry The Jerger system classifies tympanograms. In this system the response recorded can be classified into three types: type A, type B and type C. A type A response implies normal functioning of the middle ear, although this result could also occur in the early stages of Otosclerosis ears.

How is a tympanogram used to measure impedance?

Tympanogram: Interpreting impedance results Tympanometry is a test of middle ear functioning. It looks at the flexibility (compliance) of the eardrum to changing air pressures, indicating how effectively sound is transmitted into the middle ear.

How is acoustic impedance related to acoustic immittance?

Acoustic impedance is considered to be a response to acoustic immittance. Acoustic immittance refers to the measurement of air pressure or energy flow in the eardrum, tensor tympani, ossicular chain, ear canal, cochlea, and brainstem. The mass, resistance, and mobility of the middle as well as the outer ear systems influence the tympanometry test.

What is the definition of tympanometry in audio?

• THEREFORE TYMPANOMETRY MAY BE DEFINED AS MEASUREMENT OF CHANGE IN IMPEDANCE OF MIDDLE EAR CAVITY AT THE TM PLANE IN RELATION TO CHANGE IN PRESSURE IN EAC. • TYMPANOGRAM Y or ORDINATE IMPEDANCE OR STIFFNESS X OR ABSCISSA AIR PRESSURE 8.