A tympanogram is a graph that shows the mobility of the tympanic membrane, or eardrum. It is a test that is used to assess the function of the middle ear.
What does a tympanogram tell you?
A tympanogram can tell you a lot about the condition of your middle ear. It can tell you if there is fluid in the middle ear, if the eardrum is perforated, or if there is a problem with the Eustachian tube.
What are the four types of tympanogram?
There are four main types of tympanograms:
- Type A: This is the normal tympanogram. It shows a peak in the middle of the graph, which indicates that the eardrum is moving normally.
- Type B: This tympanogram shows a flat curve, which indicates that the eardrum is not moving as well as it should. This can be caused by fluid in the middle ear, a perforated eardrum, or a problem with the Eustachian tube.
- Type C: This tympanogram shows a peak at the high-pressure end of the graph, which indicates that the eardrum is too stiff. This can be caused by scarring of the eardrum or by a problem with the ossicles (the small bones in the middle ear).
- Type D: This tympanogram shows a peak at the low-pressure end of the graph, which indicates that the eardrum is too compliant. This can be caused by a hole in the eardrum or by a problem with the eustachian tube.
What is the normal tympanogram range?
The normal tympanogram range is a peak of 0.3 to 1.5 mmho at a pressure of -200 daPa. However, the normal range can vary depending on the age of the person and the type of tympanogram machine that is used.
What are Type A and B tympanogram?
Type A tympanograms are considered normal, while Type B tympanograms indicate a problem with the middle ear. Type C tympanograms indicate that the eardrum is too stiff, and Type D tympanograms indicate that the eardrum is too compliant.
How is tympanometry performed?
Tympanometry is a painless test that is performed by an audiologist. The audiologist will insert a small probe into the ear canal. The probe will then create a change in air pressure in the ear canal, and the tympanogram will be recorded.
Why is tympanometry important?
Tympanometry is an important test because it can help to diagnose a number of middle ear problems. It can also be used to monitor the progress of treatment for middle ear problems.