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Updated: Dec 18, 2025
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Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
Published on: August 30, 2019
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Lateral Semicircular Canal BPPV…Are We Still Ignorant?
Jaskaran Singh1,2, Bhanu Bhardwaj1,3
1Sri Guru Ram Das Institute of Health Sciences and Research, Amritsar, India.
Summary
Benign Paroxysmal Vertigo (BPPV) often involves the posterior canal, but lateral canal BPPV is underdiagnosed. This study found lateral canal BPPV in 12.3% of cases, highlighting the need for routine supine roll tests.
Area of Science:
- Otolaryngology
- Neurology
- Vestibular System Disorders
Background:
- Benign Paroxysmal Vertigo (BPPV) is a common cause of vertigo, typically affecting the posterior semicircular canal.
- The incidence and diagnosis of lateral and anterior semicircular canal BPPV are often underestimated by clinicians.
Purpose of the Study:
- To determine the incidence of lateral canal BPPV in a tertiary care hospital setting.
- To encourage clinicians to include lateral canal BPPV in their differential diagnosis for refractory BPPV cases.
Main Methods:
- An observational, cross-sectional study of 300 BPPV patients.
- Utilized both Dix-Hallpike maneuver and supine roll test for diagnosis.
- Treated patients based on nystagmus findings and affected canal.
Main Results:
- Out of 300 patients, 12.3% (37 cases) had lateral canal BPPV.
- Posterior canal BPPV accounted for 86.6% (260 cases), and anterior canal BPPV for 1% (3 cases).
- Geotropic nystagmus was observed in 30/37 lateral canal BPPV cases.
Conclusions:
- Lateral canal BPPV is a significant entity that requires consideration in all BPPV diagnoses.
- Routine use of the supine roll test is crucial for accurate diagnosis, as many cases are missed.
- Further institutional studies are needed to establish standardized treatment protocols for lateral canal BPPV.
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