Case 14 Immittance

Although tympanometry was not medically necessary (he would be seen in the ENT clinic as a work-in patient when the ENTs returned from lunch regardless) multi-frequency, multi-component testing was conducted “for the fun of it” with patient permission.

The left ear 226 Hz tymp is run twice, once with positive to negative pressure, once with negative to positive pressure.

  • What feature(s) make the 226 Hz multiple component tympanometry abnormal?

Here are the 668 Hz multiple component tympanograms and the 1000 Hz Y tympanogram.

  • How would you describe these in a clinical report?

Acoustic Reflex Data

Thresholds

500 1000 2000 4000
Right Ipsi 100? 105 95? DNT
Right Contra DNT DNT DNT DNT
Left Ipsi 105 but wrong phase 95 Absent DNT
Left Contra DNT DNT DNT DNT