Clinical Application Of Real-Ear Measurements Using Rem440; Reur/Reug Measurements - Interacoustics Affinity 2.0 Additional Information

2.6

Clinical application of real-ear measurements using REM440

This section describes all the REM440 real-ear tests. For all measures, please reduce ambient noise as
much as possible.
2.6.1

REUR/REUG measurements

REUR (Real-Ear Unaided Response): The REUR accounts f or the SPL across f requencies measured in
the open/unaided ear canal f or a given input signal at specif ic measurement point.
REUG (Real-Ear Unaided Gain): The REUG accounts f or the gain in the unaided ear canal provided solely
by the auricle and ear canal. This is obtained by subtracting the input level f rom the REUR.
The REUR/REUG is used in the calculation of REIG (Real-Ear Insertion Gain)
The REUR/REUG may also help reveal irregularities in the ear canal. In cases of temporal surgery, f or
example mastoidectomy, the residual ear canal volume may be much larger than in an average ear.
Note: REUR is also known as an Open Ear Response
Test procedure:
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1) Open the REM440 module by selecting the REM tab.
2) If needed select a test protocol in the List of Protocols. If you do not select a protocol the system
will automatically select a standard protocol.
3) Explain the procedure to the client.
4) Perf orm an otoscopic examination.
5) Mount the probe tube on the in-situ headset and place it on the client who should be seated ½-1
meters f rom the speaker.
Ensure that the probe tubes are calibrated bef ore placing them in the ear canal (see section 0 about
tube calibration).
6) Click on the REUG/REUR button if it is not already marked automatically.
A right click on REUG/REUR button allows you to enter the Settings menu, Show a predicted curve,
or Change colour of the curve.
D-0004576-Q – 2022/05
Affinity/Equinox2.0 – Additional Information
REUR – input = REUG
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