The Reliability of the Vestibular Autorotation Test (VAT) in Patients with Dizziness

Blatt, Philip J.; Schubert, Michael C.; Roach, Kathryn E.; Tusa, Ronald J.

doi:10.1097/npt.0b013e3181733709

Cited by 13 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both tests depend on the evaluation of VOR. However, VOT is not preferred in clinical practice because it is difficult and has low reproducibility and reliability 16,17 . vestibular autorotation test was compared with the head thrust test, which comprises the basis of vHIT, and head thrust was found to provide more accurate results 18 .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the vestibular system with video head impulse test in pregnant women with hyperemesis gravidarum

Tulmaç

Kılıç

Yaman

et al. 2020

J of Obstet and Gynaecol

View full text Add to dashboard Cite

AimWe aimed to evaluate the semicircular canal functions of the vestibular system in pregnant women with hyperemesis gravidarum.MethodsThis is a prospective case–control study. Among pregnant women in their first trimester (<14. gestational weeks) who presented to our outpatient clinic, 36 patients diagnosed with hyperemesis gravidarum defined as persistent nausea and vomiting requiring intravenous hydration or loss of at least 5% of prepregnancy weight and 34 healthy pregnant without nausea and vomiting were included. Otorhinolaryngologic examination and video head impulse test (vHIT) was performed to all patients. Vestibular‐ocular reflex (VOR) gain and gain asymmetry were assessed between groups.ResultsThe VOR gains in each semicircular canal did not differ between hyperemesis and control groups. Using a VOR gain cut‐off value of 0.8, the groups were compared in terms of the frequency of low values. In the hyperemesis group, abnormally low gain values of left anterior canal were more frequently observed than in the control group (32 [88.9%], 22 [64.7%], respectively, P = 0.01). In left anterior–right posterior (LARP) plane VOR gain asymmetry was higher in hyperemesis group (13.5 [1.0–71.0], 6.0 [0.0–35.0], P = 0.001). No significant gain asymmetry was detected between the groups in the other planes.ConclusionSemicircular canal functions were not abnormal globally in women with hyperemesis gravidarum. However, higher LARP plane asymmetry and low LA gain in women with hyperemesis suggests need for further research to clarify functional role of vestibular system on hyperemesis gravidarum.

show abstract

Section: Discussionmentioning

confidence: 99%

Evaluation of the vestibular system with video head impulse test in pregnant women with hyperemesis gravidarum

Tulmaç

Kılıç

Yaman

et al. 2020

J of Obstet and Gynaecol

View full text Add to dashboard Cite

show abstract

“…Although the number of reports on VAT and aging is limited, it is not surprising the two reports differ in their conclusions given the large test variance and poor test-retest reliability that is known to exist with VAT. 113,114 Comprehensive Vestibular Study Maes and colleagues conducted one of the most comprehensive clinical studies to investigate age-related physiologic degeneration. 25 The authors provide a brief summary of the literature, which has been summarized in Table 3.…”

Section: Cervical Vestibular Evoked Myogenic Potential Testingmentioning

confidence: 99%

Aging of the Human Vestibular System

Zalewski

2015

Semin Hear

110

View full text Add to dashboard Cite

Aging affects every sensory system in the body, including the vestibular system. Although its impact is often difficult to quantify, the deleterious impact of aging on the vestibular system is serious both medically and economically. The deterioration of the vestibular sensory end organs has been known since the 1970s; however, the measurable impact from these anatomical changes remains elusive. Tests of vestibular function either fall short in their ability to quantify such anatomical deterioration, or they are insensitive to the associated physiologic decline and/or central compensatory mechanisms that accompany the vestibular aging process. When compared with healthy younger individuals, a paucity of subtle differences in test results has been reported in the healthy older population, and those differences are often observed only in response to nontraditional and/or more robust stimuli. In addition, the reported differences are often clinically insignificant insomuch that the recorded physiologic responses from the elderly often fall within the wide normative response ranges identified for normal healthy adults. The damaging economic impact of such vestibular sensory decline manifests itself in an exponential increase in geriatric dizziness and a subsequent higher prevalence of injurious falls. An estimated $10 to $20 billion dollar annual cost has been reported to be associated with falls-related injuries and is the sixth leading cause of death in the elderly population, with a 20% mortality rate. With an estimated 115% increase in the geriatric population over 65 years of age by the year 2050, the number of balanced-disordered patients with a declining vestibular system is certain to reach near epidemic proportions. An understanding of the effects of age on the vestibular system is imperative if clinicians are to better manage elderly patients with balance disorders, dizziness, and vestibular disease.

show abstract

“…Second, the EOG and head movement signals were transmitted wirelessly, thereby significantly reducing the noises from the cables. Third, in comparison with literature review,19,30,31 the variance of cVAT was smaller30 and the test–retest reliability was better by the intra-class correlations of greater than 0.85 and even as high as 0.97 19,31. Finally, existing VATs use gain and phase to represent vestibular function, where the gain is calculated as the ratio of maximal velocity of eye and head movements at that time point.…”

Section: Discussionmentioning

confidence: 94%

“…However, there were limited reports about the change of vestibular function with aging evaluated by VAT. Besides, VAT is still not widely used clinically because of several weakness such as uncertain sensitivity and specificity, and poor test–retest reliability 19. Other drawbacks of VAT include a slippage of the head velocity sensor at high-frequency rotations during testing, the contributions of cervico–ocular reflex to compensate eye movements, and incompatible results between different VAT systems.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, VAT is still not widely used clinically because of several weakness such as uncertain sensitivity and specificity, and poor test–retest reliability. 19 Other drawbacks of VAT include a slippage of the head velocity sensor at high-frequency rotations during testing, the contributions of cervico–ocular reflex to compensate eye movements, and incompatible results between different VAT systems. Only a very limited number of published studies of VAT have investigated the effect of age and the risk of falls.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aging of vestibular function evaluated using correlational vestibular autorotation test

Hsieh¹,

Lin²,

Lee³

2014

CIA

View full text Add to dashboard Cite

BackgroundImbalance from degeneration of vestibular end organs is a common problem in the elderly. However, the decline of vestibular function with aging was revealed in few vestibular function tests such as vestibular autorotation test (VAT). In the current VAT, there are drawbacks of poor test–retest reliability, slippage of the sensor at high-speed rotations, and limited data about the effect of aging. We developed a correlational-VAT (cVAT) system that included a small, light sensor (less than 20 g) with wireless data transmission technique to evaluate the aging of vestibular function.Material and methodsWe enrolled 53 healthy participants aged between 25 and 75 years and divided them into five age groups. The test conditions were vertical and horizontal head autorotations of frequencies from 0 to 3 Hz with closed eyes or open eyes. The cross-correlation coefficient (CCC) between eye velocity and head velocity was obtained for the head autorotations between 1 Hz and 3 Hz. The mean of the CCCs was used to represent the vestibular function.ResultsAge was significantly and negatively correlated with the mean CCC for all test conditions, including horizontal or vertical autorotations with open eyes or closed eyes (P<0.05). The mean CCC with open eyes declined significantly at 55–65 years old and the mean CCC with closed eyes declined significantly at 65–75 years old.ConclusionVestibular function evaluated using mean CCC revealed a decline with age, and the function of visual-vestibulo-ocular reflex declined 10 years earlier than the function of vestibulo-ocular reflex.

show abstract

The Reliability of the Vestibular Autorotation Test (VAT) in Patients with Dizziness

Cited by 13 publications

References 30 publications

Evaluation of the vestibular system with video head impulse test in pregnant women with hyperemesis gravidarum

Evaluation of the vestibular system with video head impulse test in pregnant women with hyperemesis gravidarum

Aging of the Human Vestibular System

Aging of vestibular function evaluated using correlational vestibular autorotation test

Contact Info

Product

Resources

About