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Published in: European Archives of Oto-Rhino-Laryngology 1/2022

01-01-2022 | Vestibular Schwannoma | Otology

Suppression head impulse testing is recommended for vestibular testing of patients with untreated unilateral vestibular schwannoma

Authors: Morten Klitskov Jensen, Dan Dupont Hougaard

Published in: European Archives of Oto-Rhino-Laryngology | Issue 1/2022

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Abstract

Purpose

Suppression head impulse testing (SHIMP) is a new vestibular method capable of quantifying vestibular function. The aim of this study was to evaluate the feasibility of this test in patients with existing or newly diagnosed vestibular schwannoma (VS) patients by comparing the results with the traditionally used video head impulse test (vHIT or HIMP).

Methods

Fifty-five patients with unilateral VS underwent a wide battery of audiological and vestibular tests. HIMP results were evaluated using newly introduced objective guidelines based on the trace evaluation of pathological saccades. The sensitivity and specificity of HIMP and SHIMP were evaluated and compared. A new SHIMP parameter is presented; the anticompensatory saccade amplitude ratio (ASAR).

Results

We found a marked increase in specificity in HIMP testing using the objective guidelines. SHIMP testing revealed a gain threshold of 0.7 to be optimal in terms of achieving high specificity and sensitivity in relation to HIMP testing. Significant correlations were found between a low ASAR and a high degree of vestibular pathology.

Conclusion

The SHIMP test is a viable addition to the standard HIMP test in patients with VS, especially with the addition of the ASAR, which could prove useful in monitoring the residual vestibular function.

Trial registration number and date of registration

N/A.
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Metadata
Title
Suppression head impulse testing is recommended for vestibular testing of patients with untreated unilateral vestibular schwannoma
Authors
Morten Klitskov Jensen
Dan Dupont Hougaard
Publication date
01-01-2022
Publisher
Springer Berlin Heidelberg
Published in
European Archives of Oto-Rhino-Laryngology / Issue 1/2022
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI
https://doi.org/10.1007/s00405-021-06621-y

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