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Abnormal computerized dynamic posturography findings in dizzy patients with normal ENG results

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April 1, 2005
by Robert T. Sataloff, MD, DMA; Mary J. Hawkshaw, BSN, RN; Heidi Mandel, PhD; Amy B. Zwislewski, CCC-A;
Abstract
The complexities of the balance system create difficulties for professionals interested in testing equilibrium function objectively. Traditionally, electronystagmography (ENG) has been used for this purpose, but it provides information on only a limited portion of the equilibrium system. Computerized dynamic posturography (CDP) is less specific than ENG, but it provides more global insight into a patient's ability to maintain equilibrium under more challenging environmental circumstances. CDP also appears to be valuable in obtaining objective confirmation of an abnormality in some dizzy patients whose ENG findings are normal. Our review of 33 patients with normal ENG results and abnormal CDP findings suggests that posturography is useful for confirming or quantifying a balance abnormality in some patients whose complaints cannot be confirmed by other tests frequently used by otologists.

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