Download Operating Instructions MB 11 Classic

Operating Instructions MB 11 Classic
5.2 Placement of the Electrodes
For electrode placement, the skin
should be cleaned with cotton pad
dipped in alcohol or acetone to
remove any oil and dirt from skin
surface to minimize any potential
skin impedance. Using the finger,
rub the skin lightly until it turns
slightly red, this will help to reduce
skin
impedance
and
ensure
accurate BERA result.
If the patient has very rough or dry
Figure 15
Placement
of the Electrodes
skin, rubbing the mastoid area with
cotton pad soaked in salted water
will help to improve the BERA
result.
After skin preparation, apply one disposable electrode sticking pad on each
of the three electrode placement points, the vertex, the ground, and the
mastoid.
An optimal BERA measurement can be achieved by having good electrodeskin contact and accurate positioning of the electrodes.
5.3 Placement of the eartips
As human grow, so do the ears and the ear canals. Hence it is important
to choose the right ear tip according to the patient’s age and the size of
the ear canal.
5.3.1 Placement of eartips for infants
As the ear canals for newborn infants are very
small, it is important to choose suitable ear
tips especially designed for babies (Figure 16).
Before inserting the ear tips, connect them to
the insert-phone, and rub the soft rubber tip
between the thumb and the index finger to
warm it up slightly before putting them into
the ears of the babies. This will help to avoid
discomfort and thus facilitates the screening
process.
MB11_Classic_E_12a_2.1.1.doc
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Figure 16
Moulding of the earphones
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