rotary chair indications

rotary chair indications - of abnormality one is looking...

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We are getting a rotary chair. What are the current indications for the test? Which of the  various rotary chair tests provide the most diagnostic information (i.e. the SHA,  VVOR,Step test, OPK)? Which of these tests is used the most? I always thought one of  its primary uses was for monitoring pts on vestibulotoxic meds, but some of my referring  physicians say no. 1. Indications for ordering Rotational testing - Verify bilateral weakness found on caloric testing, including ice calorics - If caloric testing is not possible for whatever reason - Pediatric population if not testable with ENG - Serial testing as in monitoring vestibulotoxicity or compensation over time 2. Which of the tests in the battery is most often used and gives the most useful  information?   The SHA (Slow Harmonic Acceleration) test. It is the most robust and there are certain patterns 
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Unformatted text preview: of abnormality one is looking for. Most available information is written about this test. The Step Test is less robust and looks at the same information as SHA i.e. there is an inverse relationship between phase shift on SHA and time constant on the Step test. VVOR (Visual Vestibular Ocular Reflex) and VOR Fix (Vestibular Ocular Reflex testing with fixation) look at the interplay of vision with the VOR ie.the effect of vision on the VOR. Fixation suppression and OPK testing have already been tested in the ENG test, so they are redundant tests of the same function. The VVOR could tell just how disabled the patient is in that they should give a pretty much perfect response if they have vision and vestibular working together to give the response....
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This note was uploaded on 04/11/2010 for the course AUD 831 taught by Professor Drlisakoch during the Spring '10 term at A.T. Still University.

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