TAKING MEASUREMENTS
16
D-0115692-C (OM031)
–
Otowave 202 Operating Manual
TESTING LEFT EAR
Seeking Contra Reflex
2000 Hz 100 dB
Cancel
When the measurement is complete the indicator on the probe changes from flashing green to steady green.
The display confirms that the test has been completed along with the instruction WITHDRAW PROBE.
Remove the eartip from the patient and after a short period the tympanogram will be displayed. The form of
the tympanogram will depend on the baseline mode selected and the following illustration is for a 226Hz probe
with the default offset of +200daPa. See Section 5.5 for a description of the displays for other baseline modes.
The display shows:
The test frequency [Hz]
The peak admittance, in ml (Pk)
The pressure which gave the peak admittance in daPa
The Gradient, in daPa (Gr)
The Ear Canal Volume (ECV) in ml measured at 200 daPa.
A plot of admittance against pressure
Normative box (based on BSA recommendations)
Pass (
) / Refer (x) sign when tymp peak falls into normative box or not (refer)
Pressure cursor to be operated with up
▲
and down
▼
navigation keys.
Review the tympanogram to ensure that the peak admittance point selected by the Otowave is suitable. If
required it is possible to select an alternative peak using the
▲ and ▼ keys. The figures displayed will change
to reflect the peak selected, and will be saved with the tympanogram. Separate peaks for all baseline modes
can be set, saved and recalled but this function is not available when component display mode is used with
1000Hz probe tone
H
(see Section 5.5).
To repeat the test, press
◄.
When satisfied with the tympanogram press
►.
If reflex test(s) were carried out these results will now be displayed:
200
daPa
-200
-400
1
0
ml
Pk : 1.2ml/-46daPa
Gr : 60
ECV
0.9
ml
(2S)
226 Hz
