Journal
LARYNGOSCOPE
Volume 131, Issue 5, Pages 1110-1121Publisher
WILEY
DOI: 10.1002/lary.29124
Keywords
Peripheral vestibular disorders; sense of verticality; subjective visual vertical; rod and frame test; multisensory integration; systematic review
Funding
- European Regional Development FUND (PO FEDER 2014-2020) [1263880]
- Ministry of Science, Innovation and University (Government of Spain) [FPU17/01619]
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The study aimed to assess the misperception of visual verticality in patients with peripheral vestibular disorders compared to healthy controls. Results from 34 studies showed that patients with PVD have a higher misperception of VV, particularly in the acute phase and after vestibular surgery.
Objective The main aim was to assess the misperception of visual verticality (VV) in patients with peripheral vestibular disorders (PVD) in comparison with healthy controls. As secondary objectives, we checked if vestibular, visual, and somatosensory postural pathways can be affected in patients with PVD as well as the characteristics of PVD that could influence on the VV perception. Methods A systematic review with meta-analysis was carried out. The bibliographic search was performed in January, 2020 in PubMed, Scopus, Web of Science (WOS), CINAHL, SciELO. Two reviewers selected the studies that met the inclusion criteria, extracted data, and assessed the methodological quality using the Newcastle-Ottawa Scale (NOS). The VV perception was assessed in two meta-analysis according the used test: The Subjective Visual Vertical test (SVV) or the Rod and Frame Test (RFT) in comparison with healthy subjects. The Standardized Mean Difference (SMD) and its 95% Confidence Interval (95% CI) was used to estimate the pooled effect. Publication bias was assessed using the Egger's test and Trim and Fill Method. Results Thirty-four studies were included reporting 3,524 participants. PVD patients showed a misperception of the VV with SVV (SMD = 1.510; 95%CI: 1.190-1.830) and the RFT (SMD = 0.816; 95% CI: 0.234-1.398) respect healthy controls. A subgroup of patients in the acute phase (SMD = 2.5; 95%CI: 2.022-2.978) and who underwent a vestibular surgery (SMD = 2.241; 95%CI: 1.471-3.011) had the greater misperception of VV. Conclusion Patients with PVD show an alteration in the perception of VV, being greater in the acute phase and after a vestibular surgery.Laryngoscope, 2020
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