Video Playback buttons and selections
Stop
Stops the video
Play from Cursor
Select to start the playback at the position of the cursor. If not selected, play-
back starts at the beginning of the trace.
Speed
Note
•
Before setting the playback speed, check the recorded frame rate
(fps) stated below the eye video.
•
Normal
- eye video recorded at 30 frames per second can only be
played back at normal speed.
•
Slow
- eye video recorded at 60 frames per second can be played back
at normal or slow speed.
•
Slower
- eye video recorded at > 60 frames per second can be played
back at normal, slow, or slower speed.
10.9
Repositioning tests
For the Repositioning maneuvers, the goggles collect eye data. The high speed camera captures the image of the eye. The
OTOsuite Vestibular software processes the eye position data and calculates the slow-phase velocity (SPV).
Repositioning maneuvers are used to treat a patient diagnosed with benign paroxysmal positional vertigo. The maneuvers
dynamically change the patient’s body orientation with respect to gravity.
CRT and liberatory maneuvers begin with the patient in the sitting position. The BBQ roll maneuver begins with the
patient in the supine position with the head elevated 30°. Then the patient is rotated so that the particles are moved out
of the affected canal.
Note
•
The
Head Position Feedback
ensures that the head is properly positioned during each step of the treatment
maneuvers.
For all
Repositioning
treatments
•
The treatment can be performed with vision or vision denied.
•
The eyes are recorded in each position until the nystagmus subsides.
•
The patient’s head is comfortably supported by the examiner during the test.
Anterior and posterior semicircular canals treatments
•
CRT
(Canalith repositioning treatment)
•
Liberatory
CRT (Canalith repositioning treatment)
The patient is sitting. The head is turned 45° to the left or right depending on which side is being treated. The patient
is laid back with the head slightly hanging off the end of the exam table. Turn the head 90° in the opposite direction.
Continue in the same direction and turn the head an additional 90°.
Otometrics - ICS Impulse USB
89
10 Positional
