Video-Kopfimpulstest oder thermische Prüfung?

Blödow, Alexander; Helbig, Ralf; Wichmann, N.; Wenzel, Angela; Walther, Leif Erik; Bloching, M.

doi:10.1007/s00106-013-2752-x

Cited by 29 publications

(20 citation statements)

References 12 publications

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“…The same group recently examined 46 patients with VS and showed that caloric irrigation exhibits a higher sensitivity than HIT (72% versus 41%) and both tests show only a moderate correlation. Tumour size and hearing level were significantly correlated with caloric abnormalities but not with HIT findings [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Audiovestibular Function Deficits in Vestibular Schwannoma

Kirschbaum¹,

Gürkov²

2016

BioMed Research International

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Introduction. Vestibular schwannomas (VS) are benign tumours of the vestibular nerve and can lead to hearing loss, tinnitus, vertigo, facial palsy, and brainstem compression. Audiovestibular diagnostic tests are essential for detection and treatment planning. Methods. Medline was used to perform a systematic literature review with regard to how audiovestibular test parameters correlate with symptoms, tumour size, and tumour location. Results. The auditory brainstem response can be used to diagnose retrocochlear lesions caused by VS. Since hearing loss correlates poorly with tumour size, a retrocochlear lesion is probably not the only cause for hearing loss. Also cochlear mechanisms seem to play a role. This can be revealed by abnormal otoacoustic emissions, despite normal ABR and new MRI techniques which have demonstrated endolymphatic hydrops of the inner ear. Caloric and head impulse tests show frequency specific dynamics and vestibular evoked myogenic potentials may help to identify the location of the tumour regarding the involved nerve parts. Conclusion. In order to preserve audiovestibular function in VS, it is important to stop the growth of the tumour and to avoid degenerative changes in the inner ear. A detailed neurotological workup helps to diagnose VS of all sizes and can also provide useful prognostic information.

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Section: Resultsmentioning

confidence: 99%

Audiovestibular Function Deficits in Vestibular Schwannoma

Kirschbaum¹,

Gürkov²

2016

BioMed Research International

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“…It is now clear that many patients (especially those with Menière’s disease) do have normal horizontal canal function—as shown by vHIT, responses to high-acceleration horizontal head rotation, but have reduced or absent caloric responses (72–76). It has been suggested that this dissociation between vHIT and caloric results may be an indicator of Menière’s disease (77, 78).…”

Section: Practical Aspects and Potential Pitfalls Of Video Head Impulmentioning

confidence: 99%

The Video Head Impulse Test

et al. 2017

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In 1988, we introduced impulsive testing of semicircular canal (SCC) function measured with scleral search coils and showed that it could accurately and reliably detect impaired function even of a single lateral canal. Later we showed that it was also possible to test individual vertical canal function in peripheral and also in central vestibular disorders and proposed a physiological mechanism for why this might be so. For the next 20 years, between 1988 and 2008, impulsive testing of individual SCC function could only be accurately done by a few aficionados with the time and money to support scleral search-coil systems—an expensive, complicated and cumbersome, semi-invasive technique that never made the transition from the research lab to the dizzy clinic. Then, in 2009 and 2013, we introduced a video method of testing function of each of the six canals individually. Since 2009, the method has been taken up by most dizzy clinics around the world, with now close to 100 refereed articles in PubMed. In many dizzy clinics around the world, video Head Impulse Testing has supplanted caloric testing as the initial and in some cases the final test of choice in patients with suspected vestibular disorders. Here, we consider seven current, interesting, and controversial aspects of video Head Impulse Testing: (1) introduction to the test; (2) the progress from the head impulse protocol (HIMPs) to the new variant—suppression head impulse protocol (SHIMPs); (3) the physiological basis for head impulse testing; (4) practical aspects and potential pitfalls of video head impulse testing; (5) problems of vestibulo-ocular reflex gain calculations; (6) head impulse testing in central vestibular disorders; and (7) to stay right up-to-date—new clinical disease patterns emerging from video head impulse testing. With thanks and appreciation we dedicate this article to our friend, colleague, and mentor, Dr Bernard Cohen of Mount Sinai Medical School, New York, who since his first article 55 years ago on compensatory eye movements induced by vertical SCC stimulation has become one of the giants of the vestibular world.

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“…VS initially show a pathological UW and a normal vHIT. However, with increasing size the vHIT might become pathological [69][70][71]. It is controversially discussed if UW is a predictor for tumour size [70,72] or not [73].…”

Section: Vestibular Schwannoma (Vs)mentioning

confidence: 99%

“…However, with increasing size the vHIT might become pathological [69][70][71]. It is controversially discussed if UW is a predictor for tumour size [70,72] or not [73]. It was shown that the VOR gain of vHIT is not correlated with the tumour size [70] but rated together with the CI there was a correlation.…”

Section: Vestibular Schwannoma (Vs)mentioning

confidence: 99%

Testing of the Semicircular Canal Function in Vertigo and Dizziness

Rambold¹

2017

Up to Date on Meniere's Disease

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Testing the function of the semicircular canals (SCC) in vertigo and dizziness is an important step towards a diagnosis. There are different vestibular tests available: rotatory testing, bithermal caloric irrigation (CI) and the video-head-impulse test (vHIT). This chapter describes the basic methods, the current knowledge and economic aspects focused on the vHIT and CI. After a general section, common vertigo diseases are discussed with respect to the functional tests. From this chapter, it is clear that not only one method has to be applied to test vestibular function but a battery including the CI and the vHIT in three dimensions.

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Video-Kopfimpulstest oder thermische Prüfung?

Cited by 29 publications

References 12 publications

Audiovestibular Function Deficits in Vestibular Schwannoma

Audiovestibular Function Deficits in Vestibular Schwannoma

The Video Head Impulse Test

Testing of the Semicircular Canal Function in Vertigo and Dizziness

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