Starting Measurements - Interacoustics Virtual SVV Manual De Instrucciones

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Virtual SVV™ Instructions for Use – US
Figure 5-4 Example of the luminous line as seen by the patient

Starting measurements

Click on the Start button to begin test measurement. Familiarize the patient with the operation of the
device.
Figure 5-5 Start button
When the Start button is clicked the luminous line appears at a random angle on the patient's display.
Instruct the patient to use the left and right buttons on the handheld remote to rotate the line to be vertical.
Remind the patient that the yellow end of the luminous line should point upwards.
During this procedure, the longer the left or right button is pressed, the faster the line will rotate. A short
press rotates the line by 0.1°. Thus the luminous line can be set with a resolution of 0.1°. During the test
ensure that the patient maintains his head in an upright position. This can be monitored on the effective
tilt dial in the application software. When the patient is convinced that the luminous line is gravity-vertical,
he/she should confirm this by pressing the OK button on the handheld remote.
Figure 5-6 Real-time display of effective head tilt, SVV dial, and patient activity buttons
The application software provides the operator with comprehensive real-time information regarding the
patient's activity. The angle of the head tilt and of the luminous line, as well as the patient activity buttons
are displayed in real-time.
Serial measurements
The serial measurement function is intended to simplify the procedure when several measurements are to
be made in one head position. This optional mode is configured by two parameters within the General
tab in Settings.
1. Number of measurements – definable from 3 to 10 trials
2. Waiting time between measurements – definable from 3 to 10 seconds
The serial measurement mode is enabled by checking the box located above the start button.
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