Testing With Static Tilt; Configuration And Operation - Interacoustics Virtual SVV Manual De Instrucciones

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Virtual SVV™ Instructions for Use – US
Page 26
During serial measurements each trial is preceded by a countdown. In this manner the examiner is freed
from initiating each trial and can focus attention on monitoring the patient.
The serial measurement mode can be disabled at any time by unchecking the serial measurement box
above the start button, or by clicking cancel. The serial measurement can be started several times until
the maximum number of 10 trials per position have been collected.

Testing with static tilt

5.4.1

Configuration and operation

Additional test trials can be performed with the patient's head tilted at varying degrees to the left and right
as deemed necessary by the examiner. In the static tilt mode, the patient is first tested in the upright
position and then at a number of head tilt angles.
The desired tilt angles can be individually defined in the Examination tab within Virtual SVV™ settings.
Up to four head tilt positions between 1° and 60° to the left and to the right can be entered. The input
window displays the previously defined tilt angles. Old tilt angles can be deleted after marking with the
mouse.
Use the effective tilt dial in the application software to ensure that the patient's head is tilted in the
appropriate degree and direction.
As an alternative to the raw measurement data in each position, the median value can be calculated and
display on the results chart. This also allows outliers beyond a set permissible tolerance range to be
excluded. This tolerance range defines how many degrees any individual measurement data point may
deviate in order to be considered in the median calculation and can be defined within Virtual SVV™
settings.
Any setup changes can be confirmed by clicking OK.
Figure 5-7 Configuring tilt sequence and median tolerance

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