Relevance of the Activities-Specific Balance Confidence (ABC) Scale to Urban Community-Dwelling Adults With Diagnosed Vestibular Dysfunction.

OBJECTIVE: To determine how relevant the items on the activities-specific balance confidence (ABC) scale are to patients living in an urban setting and to evaluate additional items relevant to urban populations but not included in the current version of the scale. DESIGN: Cross-sectional clinical survey. SETTING: Urban, tertiary vestibular rehabilitation clinic. PARTICIPANTS: Vestibular rehabilitation clinic outpatients (N=103). INTERVENTIONS: N/A. MAIN OUTCOME MEASURES: Relevance of 16 day-to-day tasks on the ABC scale on a scale of 0 (not performed) to 10 (performed regularly); median relevancy score (MRS) for most relevant items. RESULTS: One hundred three participants (73.7% female, mean age 61.5± years) with vestibular disorders completed the survey. The items with the highest MRS were walking around a house (MRS=10), reaching for a shelved item eye level (MRS=9), taking the stairs (MRS=7), bending over and picking up a slipper (MRS=7), and stepping onto or off an escalator while holding the railing (MRS=7). Lowest MRS items to someone living in an urban environment included walking across a parking lot to the mall (MRS=0) and walking outside the house to a car parked in the driveway (MRS=0). The most common functional activities not addressed by ABC score included navigating the subway/public transit (35.9%) and walking through crowds (32.0%). CONCLUSIONS: This study revealed insights about important activities of daily living for those in an urban setting. Results show that the ABC scale should be modified to better reflect the specific activities of urban dwellers.

Immediate Improvement in Subjective Visual Vertical and Disequilibrium Predicts Resolution of Benign Paroxysmal Positional Vertigo Following Single Canalith Repositioning Maneuver.

Objective: To evaluate whether immediate post-canalith repositioning maneuver (CRM) vestibular changes are predictive of benign paroxysmal positional vertigo (BPPV) resolution. Study Design: Retrospective cohort study. Setting: Tertiary referral center. Patients: Adults (n = 27) with posterior canal BPPV. Interventions: Single CRM with Frenzel goggles. Main Outcome Measures: The Visual Analog Scale (VAS) for disequilibrium, the subjective visual vertical (SVV), the subjective visual horizontal (SVH), and the Modified Clinical Test of Sensory Interaction on Balance (mCTSIB) were administered pre- and immediately following single CRM. Dix-Hallpike was performed 1-3 weeks after CRM to assess for BPPV resolution. Pre- and post-treatment vestibular assessments were compared between groups to determine if post-CRM vestibular changes could predict BPPV resolution. Results: The change in VAS score following CRM treatment was statistically different between patients who responded to CRM treatment (n = 15) and those who did not (n = 12), (-0.07 points versus -2.40 points, respectively; P = 0.03). Likewise, a significantly greater improvement in SVV score was observed for CRM responders compared with CRM nonresponders (0.92° versus -0.06°, respectively; P = 0.02). Change in SVH and mCTSIB scores did not differ significantly between groups. Additionally, patient age was found to predict outcome of CRM treatment, with older patients more likely to experience persistent BPPV (P ≤ 0.01). Conclusions: Immediate improvement in VAS and SVV scores following CRM may be useful in predicting resolution of BPPV and may assist in directing the timing and need for future interventions. Younger age may have a favorable predictive value for improvement following single CRM.

Special tools for the assessment of balance and dizziness in individuals with mild traumatic brain injury.

INTRODUCTION: Although a majority of patients following minor traumatic brain injury recover to their pre-morbid functional level, persistent activity and participation limitations can occur in the refractory patient. These long-term consequences of brain injury may only become apparent months to years after the injury. In order to quantify these long-term sequella, laboratory, clinical and functional outcome measures may not only identify needed areas of treatment, but may also assist in determining the impact of the treatment on the individuals function. PURPOSE: The aim of this manuscript is to review the clinical utility of vestibular laboratory testing and the bedside vestibular examination in patients following mild traumatic brain injury. In addition, the validity and inter-observer reliability of functional outcome measures commonly used in individuals with mTBI will also be reviewed. SUMMARY: Because of the diffuse pathology seen with mTBI, multiple tests are needed to determine the resultant impairment and their impact on the patient's activity level and participation level. Laboratory test and bedside tests of vestibular impairment are reviewed. Functional outcome measures including the Dynamic Gait Index, the Functional Gait Assessment, the Balance Error Scoring System, and Dual Task Performance are reviewed for their appropriateness in quantifying the effect of mTBI at activity level and participation level of the individual. CONCLUSION: TBI rehabilitation services are increasingly exemplified by the needs of patients, rather than by the underlying pathology or diagnosis. Basing treatment decisions and treatment timing on laboratory, clinical, and functional testing can optimize the rehabilitation outcome.

Vestibular rehabilitation following mild traumatic brain injury.

INTRODUCTION: Vertigo, dizziness, and imbalance are a symptom complex that is commonly found following concussion. Early metabolic changes following concussion may lead to worsening of the injury and symptoms in individuals not properly managed from the outset. When symptoms do not recover spontaneously, skilled vestibular rehabilitation can be an effective modality in an attempt to normalize the individual's vestibular responses. PURPOSE: The purpose of this review is to appraise the current and accepted methods available to the skilled clinician in quantifying and treating vestibular dysfunction following concussion. Incidence and prognostic indicators will be reviewed along with common barriers to recovery. SUMMARY: Vestibular Rehabilitation following concussion utilizes similar tools and techniques employed when treating those solely with peripheral pathology. The clinician must not only have a solid understanding of when and why certain exercises are required, but also be willing to accept that less exercise may be indicated in this population. As injury to the system following mild traumatic brain injury can include both peripheral and central structures, the duration of therapy and the time to recovery may be prolonged. Co-morbidities including cognitive and behavioral issues, visual-perceptual dysfunction, metabolic dysfunction, and autonomic dysfunction may hamper the effectiveness of the traditional Vestibular Rehabilitation approach. As successful treatment does not occur in a vacuum, working closely with other disciplines well versed in treating these co-morbid issues will help the individual to obtain optimal recovery. CONCLUSION: Vestibular Rehabilitation is an effective modality for managing dizziness, vertigo, and imbalance following concussion. Careful consideration of the acuity of the injury, along with effective management of co-morbid conditions will optimize the result.