Evi Verbecque1,2, Floris L Wuyts3,4, Robby Vanspauwen5, Vincent Van Rompaey6,7, Paul Van de Heyning6,7, Luc Vereeck1,8. 1. Department of Rehabilitation Sciences and Physiotherapy/Movant, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium. 2. Rehabilitation Research Centre (REVAL), Rehabilitation Sciences and Physiotherapy, Hasselt University, Agoralaan Building A, 3590, Diepenbeek, Belgium. 3. Lab for Equilibrium Investigations and Aerospace (LEIA), University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium. Floris.Wuyts@uantwerpen.be. 4. European Institute for Otorhinolaryngology, GZA Hospitals Antwerp, Wilrijk, Belgium. Floris.Wuyts@uantwerpen.be. 5. European Institute for Otorhinolaryngology, GZA Hospitals Antwerp, Wilrijk, Belgium. 6. Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium. 7. Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Campus Drie Eiken, 2610, Wilrijk, Belgium. 8. Multidisciplinary Motor Centre Antwerp (M2OCEAN), University of Antwerp, Universiteitsplein 1, Campus Drie Eiken, D.R.311, 2610, Wilrijk, Belgium.
Abstract
PURPOSE: To create an index that is a measure of the amount of vestibular compensation and for which only functional balance performance is needed. METHODS: The medical charts of 62 eligible peripheral vestibular dysfunction (PVD) patients were analyzed retrospectively. To be included, the following vestibulo-ocular reflex (VOR) and balance performance data had to be available: (1) caloric and sinusoidal harmonic acceleration test (SHA) and (2) standing balance sum-eyes closed (SBS-EC), Timed Up and Go Test and Dynamic Gait Index. Patients were divided into three groups: normal caloric- and SHA test (group 1), abnormal caloric- and normal SHA test (group 2, PVD compensated) and abnormal caloric- and SHA test (group 3, PVD uncompensated). Next to the use of non-parametric tests to study the VOR and balance variables, logistic regression was used to identify the balance measures that predict whether PVD patients were compensated or uncompensated. This resulted also in the construction of a continuous measure representing the degree of compensation. RESULTS: Logistic regression identified SBS-EC and age to classify uncompensated from compensated patients with sensitivity of 83.9% and specificity of 72.4%. Then an index was created, called the Antwerp Vestibular Compensation Index, AVeCI = - 50 + age × 0.486 + SBS-EC × 0.421. A patient belongs to the uncompensated group when AVeCI < 0 and to the compensated group when AVeCI > 0, with respective group means of - 5 and 5. CONCLUSION: AVeCI stages the degree of compensation of PVD patients and can serve to evaluate rehabilitation effects.
PURPOSE: To create an index that is a measure of the amount of vestibular compensation and for which only functional balance performance is needed. METHODS: The medical charts of 62 eligible peripheral vestibular dysfunction (PVD) patients were analyzed retrospectively. To be included, the following vestibulo-ocular reflex (VOR) and balance performance data had to be available: (1) caloric and sinusoidal harmonic acceleration test (SHA) and (2) standing balance sum-eyes closed (SBS-EC), Timed Up and Go Test and Dynamic Gait Index. Patients were divided into three groups: normal caloric- and SHA test (group 1), abnormal caloric- and normal SHA test (group 2, PVD compensated) and abnormal caloric- and SHA test (group 3, PVD uncompensated). Next to the use of non-parametric tests to study the VOR and balance variables, logistic regression was used to identify the balance measures that predict whether PVD patients were compensated or uncompensated. This resulted also in the construction of a continuous measure representing the degree of compensation. RESULTS: Logistic regression identified SBS-EC and age to classify uncompensated from compensated patients with sensitivity of 83.9% and specificity of 72.4%. Then an index was created, called the Antwerp Vestibular Compensation Index, AVeCI = - 50 + age × 0.486 + SBS-EC × 0.421. A patient belongs to the uncompensated group when AVeCI < 0 and to the compensated group when AVeCI > 0, with respective group means of - 5 and 5. CONCLUSION: AVeCI stages the degree of compensation of PVD patients and can serve to evaluate rehabilitation effects.
Entities:
Keywords:
Adult; Functional assessment; Postural balance; Vestibular function tests
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