Otodynamics Otoport Advance, User Manual

Page: 64 / 296

CHAPTER FIVE
Test preparation
64
5.5
Electrode fitting
5.5.1
Skin preparation
The skin at the electrode sites must be prepared to ensure that the
impedance is low enough for a good recording.
Use electrode skin preparation pads/tape, exfoliating pads (e.g. Dry Prep),
or a swab coated with Nuprep™ to clean each of the areas. With your
thumb and finger support the skin, holding it gently taut. Swipe across
the site with 3 to 4 moderately firm strokes in order to obtain a satisfactory
connection to the skin. Excessive caution with skin preparation can disturb
the baby more than firmer strokes.
If using a wet prep use a gauze pad to remove any residue. Avoid touching
the prepared area and, to ensure that the sensor is placed directly on the
prepared area, it is preferable to prepare one site at a time and immediately
apply a sensor.
The use of wet gel electrodes is recommended, as the conductive
gel ensures a quick and reliable low-impedance contact with the skin.
However, any wired electrodes that are terminated with 1.5mm ‘Touchproof’
DIN 42-802 connectors may be used.
Test preparation