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Updated: Dec 11, 2025
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Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
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Video head impulse testing in patients with benign paroxysmal positional vertigo
Ziya Saltürk1, Sertaç Yetişer1
1ENT Department, Anadolu Health Center.
Acta Oto-Laryngologica
|August 18, 2020
Summary
Vestibulo-ocular reflex (VOR) function is normal in patients with benign paroxysmal positional vertigo (BPPV). Video head impulse testing (vHIT) confirms normal VOR function on the affected side in BPPV patients.
Area of Science:
- Neurology
- Ophthalmology
- Vestibular System
Background:
- Benign paroxysmal positional vertigo (BPPV) is a common cause of dizziness.
- Vestibulo-ocular reflex (VOR) function is typically expected to be unaffected during sudden head movements in BPPV patients.
Purpose of the Study:
- To analyze VOR function using video head impulse test (vHIT) in patients diagnosed with BPPV.
- To determine the clinical utility of vHIT in the assessment of BPPV.
Main Methods:
- Sixty patients with BPPV and fifteen healthy controls were enrolled.
- Key outcome measures included VOR gain, gain asymmetry, and refixation saccades.
- vHIT was employed to assess VOR function during head impulses.
Main Results:
- No significant differences in VOR gain or asymmetry were observed between BPPV patients and the control group.
- Some patients with posterior canal BPPV (PC BPPV) and lateral canal BPPV (LC BPPV) exhibited low VOR gain or corrective saccades.
- Overall, VOR function remained within normal limits despite the presence of BPPV.
Conclusions:
- vHIT analysis indicates that VOR function is preserved on the affected side in patients with BPPV.
- These findings support the use of vHIT as a valuable tool for evaluating BPPV.
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