Lesson 14 Flashcards
Tympanometry identifies
a measure of the dynamic compliance of the TM
By convention, the range of pressures exerted in tympanometry range from
+200 mm (H20) to -200mm (H20)
The tympanogram measures
the intensity of the sound in the cavity between the probe tip and the TM
The point of maximum compliance in a tymmpanogram represents
the point at which the pressure exerted through the probe tip exactly matches the pressure within the middle ear
A “0” mm (H20) pressure reading means
that no pressure is being exerted on the TM
The configuration and height of the tympanogram can be a factor in deciding the proper matrix for the fitting of a hearing aid
A high Type A tells us to decrease the output by 2-3 dB
Tympanometry is effective in identifying
middle ear pathologies
