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Article type: Research Article
Authors: Casani, Augusto Pietro; *; 1 | Canelli, Rachele; 2 | Lazzerini, Francesco; 3 | Navari, Elena; 4
Affiliations: Department of Surgical Pathology, Medical, Molecular and Critical Area, ENT Section, Pisa University Hospital, Pisa, Italy
Correspondence: [*] Corresponding author: Augusto P. Casani, MD., Associate Professor, Department of Medical and Surgical Pathology, Otorhinolaryngology Section, Pisa University Hospital, Via Paradisa, 2, 56126 Pisa, Italy. Tel.: +39050997499; E-mail: augusto.casani@unipi.it.
Note: [1] orcid.org/0000-0001-5261-9129
Note: [2] orcid.org/0000-0002-5668-0717.
Note: [3] orcid.org/0000-0001-7142-4570.
Note: [4] orcid.org/0000-0001-6047-7546.
Abstract: OBJECTIVES:This cross-sectional study aims to describe the features of the suppression head impulse paradigm (SHIMP) in acute unilateral vestibulopathy (AUV) and to define its role in predicting the recovery of patients. METHODS:Thirty patients diagnosed with AUV were retrospectively analyzed. The dizziness handicap inventory score and video head impulse test parameters performed 4–8 weeks from the AUV onset constituted the main outcome measures. Patients with a worse recovery (Group 1) and patients who recovered spontaneously (Group 2) were compared. RESULTS:The SHIMP vestibulo-ocular reflex (VOR) gain was statistically significantly lower than the conventional head impulse paradigm (HIMP) VOR gain (P < 0.001). The SHIMP VOR gain was negatively correlated with the DHI (P < 0.001) and was positively correlated with the HIMP VOR gain (P < 0.001) and the SHIMP overt saccades (%) (P < 0.001). Patients with a worse recovery exhibited the following: higher DHI (P < 0.001), lower SHIMP and HIMP VOR gain (P < 0.001 and P = 0.007, respectively), and lower SHIMP and greater HIMP overt saccade prevalence values (P = 0.007 and P = 0.032, respectively). CONCLUSIONS:The SHIMP and HIMP help in improving our approach to AUV. SHIMP appears to better identify the extent of the vestibular damage in patient suffering from AUV than HIMP and could provide interesting information about the course of the disease. Particularly, the analysis of SHIMP VOR gain and overt saccade prevalence would provide useful information about the recovery of patients.
Keywords: Video head impulse test, vestibular neuritis, acute unilateral vestibulopathy, vestibular rehabilitation, vertigo, vestibular compensation, SHIMP, HIMP
DOI: 10.3233/VES-210038
Journal: Journal of Vestibular Research, vol. 31, no. 6, pp. 531-540, 2021
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