Side-Lying
The patient is sitting. The head is turned 45° to the opposite side of the affected ear. The patient is laid on the side with
the affected ear and the nose turned 30° in the opposite direction.
Roll
This test assesses the lateral semicircular canals by recording the patient’s eye movement during the maneuver. The
patient is lying supine with the head tilted up 30° turned so that the affected ear is toward the floor. The head is quickly
turned 55° or as far as it will turn to the left or right depending on which side is being assessed. The patient’s head is com-
fortably supported by the examiner during the test. The eyes should be recorded for a minimum of 20 seconds in this pos-
ition. It is best to continue recording the eye movement until the nystagmus subsides. The patient is brought back up to
the sitting position and eye movement should again be recorded until nystagmus subsides.
10.7 Collecting Dynamic data
For information about settings available in Test Options when collecting data, refer to the Reference Manual.
Note• The temporary patient is available to allow testing to start without entering any patient data. Refer to Patient
data entry/lists ► 7 to create a new patient or open an existing patient.
When collecting data, you can monitor head movement using the Head Position Feedback display (ensures that the head
is properly positioned during the entire test or maneuver) or Synchronized Room Video. You can also choose to not use
either. (The default display is set in Test Options.)
1. This step applies only when monitoring the head movement during collection:
Note• Clicking Center sets the reference point used to provide feedback for head position during testing. The but-
ton is disabled if Head Position Feedback is not selected in the Test Options. For information about changing
settings, please refer to Options in the Reference Manual.
• If using Head Position Feedback, position the patient's head before starting to collect data. Ensure that the
patient's head is not moving and that it is perfectly centered. Click Center or press the left button on the present-
ation remote.
• If using Synchronized Room Video, you may need to adjust the camera position to ensure the entire head of the
patient is seen in the video during data collection.
2. Instruct the patient. (For example, tell them to keep their eyes open.)
Otometrics - ICS Impulse USB
83
10 Positional
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