Wednesday, September 16, 2015
Your Audiology Tutorial: CTSIB
A large, dense square of foam is used as the "dynamic" surface. The patient will remove their shoes and stand first on the floor ("static") and then the foam with eyes open and closed. The clinician will observe for any sway in any direction during all conditions. Patients with a central (brain) dysfunction may even begin to fall when attempting to navigate the dynamic surface. For the unmodified version of the CTSIB, the patient will also perform all of the above with what is known as a visual conflict dome on their head ("foam and dome test").
The CTSIB is especially sensitive for those with an uncompensated peripheral vestibulopathy - one ear that has weaker output for balance information that is causing dizziness. Interpretation should allow for consideration of co-morbidities, history of falls, as well as visual and orthopedic problems.