Pressing the foot switch more than once will NOT stop or restart the countdown timer.
If the ICS AirCal is in standby mode, pressing the foot switch will NOT start the countdown timer. In standby mode the foot
switch can start any test in the ICS VNG/ENG software.
5
Performing a Caloric Irrigation
5.1
Preparation for testing
Turn the unit on by pressing the power switch at the bottom left of the front panel. The default temperature (cool is man-
ufacturer default) will automatically be selected as indicated by the illumination of the green LED and the digital display.
The actual temperature will flash until the set temperature is reached. It takes approximately 60 seconds for set tem-
perature to be reached when the unit is first turned on. When the set temperature is reached (±0.4°C), the actual tem-
perature display will stop flashing.
Using a regular otoscope or the delivery head with airflow turned off, examine the ear canal for the presence of cerumen
and also to determine how best to direct the airstream. The ear canal should be essentially free of cerumen. If it is not,
this must be removed prior to stimulating. Do not use water to remove cerumen as this will cause the temperatures in the
ear canal to be cooler than desired due to left over water in the ear canal.
Verify that the patient is positioned properly, in the supine position with head flexed 30º.
5.2
Testing Procedure
Perform each of the four irrigations as follows:
1. Verify that a new speculum has been placed on the delivery head.
2. Instruct the patient to keep eyes open (VNG) or closed (ENG).
3. Close goggles for VNG. Have patient close their eyes for ENG.
4. Start collecting response and start irrigation.
20
Otometrics - ICS AirCal
5 Performing a Caloric Irrigation
