Maico PILOT TEST, Руководство по эксплуатации

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Operation Manual PILOT TEST
8504660
Rev.
3
24 06/11/2019
5.3.2 Preparing for Testing
5.3.2.1 Preparing the Patient
Select a quiet environment and away from distractions.
The child should sit at a distance of at least 1 m from the device and at an angle with
his/her back to the audiometer. This will insure the child is unable to see the examiners
hand movements or facial expressions during the test.
Put the child at ease and provide instruction of the test procedure
: “I am going to place
these headphones on your ears. You will hear some beeping sounds at different tones and
levels, raise your hand as soon as you hear a beep in either ear, even if it is very soft.“
Place the headphones on the patient: red side on the right ear, blue side on the left ear
and make sure that they are secure. Adjust the headband of the headphones so that the
transducers are at the correct angle (i.e. the sound output grid exactly facing the ear
canal). The headset needs to fit snuggly (make sure the child’s hair and/or glasses are
away from the ear).
5.3.3 Audiometry Screening Process
The device can be used for air conduction threshold or screening tests.
Threshold Determination
A threshold test is seeking the lowest level a tone is heard at least 50 % of the time.
The test normally starts at 1000 Hz on the better ear. A procedure of
“down 10 dB
when heard, up 5 dB when not heard
”
is typically utilized to establish a threshold at
each frequency. Vary the length of the tone and intervals between tone presentations
to ensure the child is responding to the tone and not just repeating the behavior.
Screening
A hearing screening utilizes a Pass or Refer result and is used to determine if further
testing is required. Screening is typically completed at a level of 20 dB HL at 500 Hz,
1000 Hz, 2000 Hz, and 4000 Hz in each ear. If a patient hears all the tones in each
ear, the result would be considered a
Pass . Failure to hear any of the tones in either
ear would result in a Refer .
The following is a sample of a screening protocol. Please refer to your state or facility
guidelines for specific test procedures for your location.
1. Press the Audiometry key to perform a pure tone hearing test.
Press the L/R key until the preferred test ear ( LEFT/RIGHT ) is highlighted
in black. Test usually starts in the Right ear.
2. Set the frequency (keys
◄ ►) and hearing level (keys ▲ ▼).
NOTE : Starting at a higher level then the screening guideline specifies allows you
to train or condition very young children in understanding your instruction. This would
not count as part of the screening. Once you start at the screening level (i.e.
20 dB HL), the test has begun.