Cargando…
Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study
BACKGROUND: The SVV tests the ability of a person to perceive the gravitational vertical. A tilt in SVV indicates vestibular imbalance in the roll plane, and thus injuries to the utricle or its connecting nerves. A validated bedside method (et, al., 2009, 72(19):1689–1692, Neurol, Zwergal) is the bu...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7001292/ https://www.ncbi.nlm.nih.gov/pubmed/32020884 http://dx.doi.org/10.1186/s40463-020-0402-3 |
_version_ | 1783494211982589952 |
---|---|
author | Dai, Tianyang Kurien, George Lin, Vincent YW |
author_facet | Dai, Tianyang Kurien, George Lin, Vincent YW |
author_sort | Dai, Tianyang |
collection | PubMed |
description | BACKGROUND: The SVV tests the ability of a person to perceive the gravitational vertical. A tilt in SVV indicates vestibular imbalance in the roll plane, and thus injuries to the utricle or its connecting nerves. A validated bedside method (et, al., 2009, 72(19):1689–1692, Neurol, Zwergal) is the bucket method, in which the subject estimates the true vertical by attempting to properly align a straight line visible on the bottom of a bucket that is rotated at random by the examiner. In our study, the subjects need to align the plumb line on the Visual Vertical iOS app to the vertical direction. METHODS: Measurements of the SVV were made in 22 healthy subjects (16 females and 6 males). Each subject conducted 10 iterations of bucket test and 10 iterations of iOS app test. The reliability and validity of the iOS app was analyzed by SPSS21. RESULTS: Cronbach’s α for the plumb line method was 0.976, and the iOS app was 0.978. Statistical comparison of SVV values measured by the iOS app and the bucket method showed no significant difference in distribution (Mann Whitney U test U = 0.944). CONCLUSION: The Visual Vertical iOS app is an effective and accessible substitute to the plumb line for the measurement of the validated bucket test. |
format | Online Article Text |
id | pubmed-7001292 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-70012922020-02-10 Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study Dai, Tianyang Kurien, George Lin, Vincent YW J Otolaryngol Head Neck Surg Original Research Article BACKGROUND: The SVV tests the ability of a person to perceive the gravitational vertical. A tilt in SVV indicates vestibular imbalance in the roll plane, and thus injuries to the utricle or its connecting nerves. A validated bedside method (et, al., 2009, 72(19):1689–1692, Neurol, Zwergal) is the bucket method, in which the subject estimates the true vertical by attempting to properly align a straight line visible on the bottom of a bucket that is rotated at random by the examiner. In our study, the subjects need to align the plumb line on the Visual Vertical iOS app to the vertical direction. METHODS: Measurements of the SVV were made in 22 healthy subjects (16 females and 6 males). Each subject conducted 10 iterations of bucket test and 10 iterations of iOS app test. The reliability and validity of the iOS app was analyzed by SPSS21. RESULTS: Cronbach’s α for the plumb line method was 0.976, and the iOS app was 0.978. Statistical comparison of SVV values measured by the iOS app and the bucket method showed no significant difference in distribution (Mann Whitney U test U = 0.944). CONCLUSION: The Visual Vertical iOS app is an effective and accessible substitute to the plumb line for the measurement of the validated bucket test. BioMed Central 2020-02-05 /pmc/articles/PMC7001292/ /pubmed/32020884 http://dx.doi.org/10.1186/s40463-020-0402-3 Text en © The Author(s). 2020 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Original Research Article Dai, Tianyang Kurien, George Lin, Vincent YW Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title | Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title_full | Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title_fullStr | Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title_full_unstemmed | Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title_short | Mobile phone app Vs bucket test as a subjective visual vertical test: a validation study |
title_sort | mobile phone app vs bucket test as a subjective visual vertical test: a validation study |
topic | Original Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7001292/ https://www.ncbi.nlm.nih.gov/pubmed/32020884 http://dx.doi.org/10.1186/s40463-020-0402-3 |
work_keys_str_mv | AT daitianyang mobilephoneappvsbuckettestasasubjectivevisualverticaltestavalidationstudy AT kuriengeorge mobilephoneappvsbuckettestasasubjectivevisualverticaltestavalidationstudy AT linvincentyw mobilephoneappvsbuckettestasasubjectivevisualverticaltestavalidationstudy |