Recording impedance tests in NOAHaud

NOTE: If any of the options in the following sections are missing, refer to Profile options under Related Links to the right of this page.

In NOAHaud, use the arrow keys to move within a section. Use the tab key to move to a new section.

In NOAHaud, open the Impedance tab, then click the New Audiogram icon - .
Contralateral and Ipsilateral Acoustic Reflexes Tests: Enter test results in the test tables, then proceed to step 4 below:

BBN: Broad Band Noise - LBN: Low Band Noise - HBN: High Band Noise
Decay Results: Click the button below the associated frequency. Click once for a positive observance of decay - . Click twice for a negative observance of decay - .

Tympanometry Tests: Enter details into the available fields. (NOTE: To select the units and the gradient formula, click Tools > Profile Options. Open the Impedance tab. At the Tympanometrysection, click Options):

Type:
A - Distinctive peak in the vicinity of atmospheric pressure.

A(s) - Type A tympanogram with shallow peak.

A(d) - Type A tympanogram with very high peak.

B - Flat across pressure range.

C - Negative pressure peaks below 100 daPa (mmH₂o).

Peak pressure: The X-value corresponding to the maximum Y-value, as depicted on the tympanogram (1 in diagram).
Synonym: Point of Maximum Compliance

Ear canal volume: The physical space between the tip of the probe and the tympanic membrane.
Synonym: Physical Volume

Static compliance: A calculated value, equal to the Ear Canal Volume minus the Peak Height.

Synonym: Static Admittance

Peak height: The maximum Y-value, as depicted on the tympanogram (2 in diagram at Peak Pressure).

Synonym: Peak Amplitude, Peak Compliance, Maximum Compliance

Gradient: The result of a calculation, using one of the following:

Formula A: Expressed as a pressure. Equals the width of the tympanogram curve corresponding to the Y-value equal to half the Peak Height. Synonym: Tympanometric Width

Formula B: Expressed as a volume. Equals the distance between the Peak Height and the Y-value where the width of the tympanogram curve is 100 daPa.

To enter details into the Notes panel, use the pull-down menu at Make/Model. The Calibration Dateappears automatically.

Editing Audiometers: Click on Tools > Calibration Dates. The Audiometers window opens. Use this window to add or rename audiometers, change dates or delete entries.

If you are recording a test that occurred on a previous date, click Edit > Date of Evaluation. Select the date, then click OK.
If you wish to print the test results, first click Audiogram > Report Comments to enter comments, then click the Print icon - .
Click the Save icon - .