43
Normal Ear Canal Volume
Restricted Mobility
Abnormal Middle-Ear Pressure
Borderline Wide Gradient
Slightly Elevated Reflex
POSSIBLE CAUSE
Poorly functioning eustachian tube
Normal Ear Canal Volume
No Mobility
No Middle-Ear Pressure
No Gradient
No Reflex
POSSIBLE CAUSE
Fluid-filled middle-ear (Serous Otitis)
Compliance peak may be present
at a more negative pressure than
–400 daPa
Abnormal Ear Canal Volume
No Mobility
No Middle-Ear Pressure
No Gradient
No Reflex
POSSIBLE CAUSE
Perforation
Patent Pressure Equalization
(P-E) tube
FIGURE 4-2: ABNORMAL TYMPANOMETRIC RESULT
FIGURE 4-3: ABNORMAL TYMPANOMETRIC RESULT
FIGURE 4-4: ABNORMAL TYMPANOMETRIC RESULT
