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

2.0
Affinity Additional Information
2.7

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.
2.7.1

REUR/REUG Measurements

REUR (Real-Ear Unaided Response): The REUR accounts for the SPL across frequencies measured in
the open/unaided ear canal for a given input signal at specific measurement point.
REUG (Real-Ear Unaided Gain): The REUG accounts for the gain in the unaided ear canal provided solely
by the auricle and ear canal. This is obtained by subtracting the input level from 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, for
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:
7
2
8
6
10
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) Perform 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 from the speaker.
Ensure that the probe tubes are calibrated before 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.
REUR – input = REUG
Page 175
9
1