Exit audiometry, Exit audiometry -22, Tm 262 – Welch Allyn TM 262 Auto Tymp - User Manual User Manual

Page 56

TM 262

3-22

Revised 4/11/08

If a response is indicated,

decrease the intensity of this same test frequency by 10 dB and present the tone again

for one to two seconds.

If no response is indicated, increase the intensity by 5 dB. Present the tone again.

If no response is indicated, increase the intensity by another 5 dB.

If a response is indicated, this is the second time that the individual responded to the

same intensity level. Repeat the sequence of down 10 dB and up in 5 dB increments
to determine if a correct response is again detected at the same intensity level. The
threshold is considered to be the minimum level at which a response has occurred two
out of three times. Press the M+ button when this intensity level is indicated on the
screen above the test frequency to signify that the threshold level for that frequency
has been reached. Note that the appropriate symbol (0 = right, X = left) appears at the
correct intensity level where the threshold was determined.

Repeat this test sequence for each frequency to be tested.

Once the thresholds have been obtained for all the desired frequencies, select the other ear
and repeat the sequence. Note that the display changes to a new screen for storing the
second ear’s results. The test protocol follows a down 10 dB and up 5 dB sequence to
arrive at the threshold level.

Exit audiometry

There are two ways to exit the audiometry mode:

Select the Tymp mode button

- or -

Select the Tymp Reflex mode.

Note that the appropriate screen appears on the display.