Otoport OAE+ABR
User Manual for Otoport DP+TE model
53
Test preparation
5.3
Tip selection and probe fitting
Appropriate tip selection and good probe fit are essential to ensure
successful OAE recordings. A good probe fit will help to block out external
noise and enhance the OAE signal. The Otoport is supplied with a full
range of tips to fit all ear canal sizes (see section
18.3
DPOAE+TEOAE
probe tips
). When selecting a tip, first inspect the ear to be tested to
assess its size and to check that it is clear and free from debris. If debris
subsequently enters the probe sound tubes, do not attempt to clean them;
the coupler tubes should be changed. The correct size tip will look slightly
larger than the ear canal and should fit snugly, forming a complete seal with
the ear canal wall.
5.3.1
Fitting for newborns
Gently lift the pinna upwards, away from the baby’s head, and then towards
the back of the head. This will open the ear canal.
Insert the probe at approximately 10 o’clock (for left ear) or 2 o’clock (for
right ear).
Turn the probe ear piece to 12 o’clock.
Hold the probe for several seconds. Then release the pinna and let go of
the probe.