Balance System SD (with v4.X software) 53
12. After completing all trials, a ‘Test Complete’ message is displayed. Touch <Results> to
advance to the Limits of Stability Test Results screen.
13. At the Limits of Stability Test Results screen, touch <Print> to automatically generate a
printed report if desired.
14. To save the test data from the Results screen, touch <Save Results> and touch <OK> in
response to the ‘Save Results for later reporting or export?’ prompt. The system will display
‘Save Results Completed’ after the results are saved. If a patient identifier was not entered at
the start of the session (i.e., a name or an ID number), it will need to be entered now in order
to save the results of the session. If the test result is not saved and <Back> or <Home> is
touched, the system will prompt the user for confirmation because of the possible loss of
data for the test just performed.
15. Touching <Codes/Comments> allows the user to add additional information pertaining to the
test. CPT, ICD, G-Codes or comments regarding the test can be added at the conclusion of the
test or at a future time.
16. To return to the Opening Menu from the Limits of Stability Test Results screen, touch the
<Home> icon in the upper left corner.
Postural Stability Test
The Postural Stability test emphasizes a patient’s ability to maintain a center of balance. The
patient’s score, or Stability Index, on this test assesses deviations from center, thus a lower
score is more desirable than a higher score.
The Stability Index is the average position from the center. The Stability index does not indicate
how much the patient swayed; only their position. Consider the following example:
If a patient is positioned in a manner that biases placement from the center, the Stability Index
will be a large value. However, if the patient swayed very little, the standard deviation would be
low. This is evident when viewing the COG plots. A patient could have a score of 6.5, yet the
standard deviation would only be .8. The printout tracing will show the patient did not sway
very much. However, if the patient were positioned off-center, or even on center, and swayed a
lot, the standard deviation would be higher. Thus the standard deviation is indicative of sway.
Platform stability can be varied during a test by selecting <More Options> from the Postural
Stability Testing screen. Clinicians can set trial time, number of trials, starting and ending
platform stability, and rest countdown times.
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