Tympanometry of a 7-year-old child with recent ear fullness after an upper respiratory infection shows a peaked curve with peak pressure at minus 250 daPa and reduced compliance. This pattern corresponds to which Jerger type?
- A Type A
- B Type B
- C Type C ✓
- D Type Ad
Correct answer: C. Type C
Explanation
Type C tympanogram shows a peak at abnormally negative middle ear pressure, conventionally below minus 100 daPa, indicating impaired eustachian tube function with relative vacuum in the middle ear. It represents early or resolving otitis media with effusion before fluid fully fills the cavity. Type B is flat with no measurable pressure peak, so it does not fit this tracing.
Reference: Dhingra's Diseases of Ear, Nose and Throat, 8th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.