Subjective visual vertical (SVV) finding in healthy adults: comparison between clockwise (CW) and counterclockwise (CCW) condition

Authors

  • Zuraida Zainun Department of Neurosciences, School of Medical Sciences, Health Campus, UniversitiSains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
  • Halimatulummirah Mat Nawi Department of Neurosciences, School of Medical Sciences, Health Campus, UniversitiSains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
  • Mohd Normani Zakaria Department of Neurosciences, School of Medical Sciences, Health Campus, UniversitiSains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia
  • Asrulnizam Abd Manaf Collaborative MicroElectronics Design Excellence Centre (CEDEC) UniversitiSains Malaysia. Sains @ USM, Level 1, Block C No 10, Persiaran Bukit Jambul, 11900 Bayan Lepas, Pulau Pinang
  • Khairu Anuar Mohamed Zain Collaborative MicroElectronics Design Excellence Centre (CEDEC) UniversitiSains Malaysia. Sains @ USM, Level 1, Block C No 10, Persiaran Bukit Jambul, 11900 Bayan Lepas, Pulau Pinang
  • Abdullah Sanusi Hussain Collaborative MicroElectronics Design Excellence Centre (CEDEC) UniversitiSains Malaysia. Sains @ USM, Level 1, Block C No 10, Persiaran Bukit Jambul, 11900 Bayan Lepas, Pulau Pinang
  • AzliehanisAb Hadi Department of Neurosciences, School of Medical Sciences, Health Campus, UniversitiSains Malaysia, 16150 Kota Bharu, Kelantan, Malaysia

DOI:

https://doi.org/10.3329/bjms.v21i2.58055

Keywords:

BAL EXzz SVVT; clockwise and counterclockwise; Malay Version Vertigo Symptom Scale

Abstract

Subjective Visual Vertical test (SVVT) is an assessment that we can do to rule out vestibular function status specifically the function of the utricle in the inner ear. The purposes of this test are to assess the perception of verticality or to detect abnormal subjective tilt. In normal persons, the ability to perceive verticality is quite good. This ability depends on input from visual, vestibular, and somatosensory systems. Both utricle and saccule contribute to the sense of verticality and horizontality. This study aimed to compare the clockwise and counterclockwise conditions for BAL EXzz SVVT findings among healthy adults aged 18 to 35 years (mean age of 23.10 years). This was a repeated measures study that recruited 30 healthy adults (50% were males and 50% were females). After undergoing screening by using Malay Version Vertigo Symptom Scale (MVVSS), the participants underwent BAL EXzz SVVT testing using bucket method for the clockwise condition and then proceed with the counterclockwise condition. The SVVT was carried out according to the standard protocol and three measurements were made on the clockwise direction and three on the counterclockwise direction. The examiner selected the starting point, the subject then rotated the bucket and it stopped when the subject considered the line reached the vertical position. The results showed that there is statistically significant difference between clockwise and counter clockwise readings (p<0.05). However, there is no significant correlation between clockwise and counterclockwise conditions. In conclusion, BAL EXzz SVVT is a quick, non-invasive, and extremely reliable test to evaluate the structural and function of the utricle and saccule. SVV test can be measured with both clockwise and counterclockwise conditions.

Bangladesh Journal of Medical Science Vol. 21 No. 02 April’22 Page : 243-248

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Published

2022-02-25

How to Cite

Zainun, Z., Nawi, H. M. ., Zakaria, M. N., Manaf, A. A. ., Mohamed Zain, K. A., Hussain, A. S. ., & Hadi, A. . (2022). Subjective visual vertical (SVV) finding in healthy adults: comparison between clockwise (CW) and counterclockwise (CCW) condition. Bangladesh Journal of Medical Science, 21(2), 243–248. https://doi.org/10.3329/bjms.v21i2.58055

Issue

Vol. 21 No. 2 (2022)

Section

Review Article

License

Copyright (c) 2022 Zuraida Zainun, Halimatulummirah Mat Nawi, MohdNormani Zakaria, Asrulnizam Abd Manaf, Khairu Anuar Mohamed Zain, Abdullah Sanusi Hussain, Azliehanis Ab Hadi

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