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Published on: August 30, 2019
Diagnosis and management of lateral semicircular canal benign paroxysmal positional vertigo
Judith A White1, Kathleen D Coale, Peter J Catalano
1The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA. whitej3@ccf.org
Objective:
Describe the diagnosis, treatment, and outcome of a group of 20 patients with lateral semicircular canal benign paroxysmal positional vertigo (LSC-BPPV).
Study Design And Setting:
Retrospective review of 20 patients with LSC-BPPV (10 with geotropic and 10 with apogeotropic nystagmus) presenting to a tertiary balance center. Diagnosis was confirmed with infrared nystagmography in Dix-Hallpike positioning tests and supine positional tests. Patients were treated with one or more particle repositioning maneuvers.
Results:
Addition of supine positional nystagmus tests to Dix-Hallpike positioning testing improves sensitivity in the diagnosis of LSC-BPPV. Treatment outcomes in the apogeotropic LSC-BPPV group were poorer than the geotropic LSC-BPPV group.
Significance:
Adding supine positional testing to routine vestibular diagnostic testing will increase the identification of LSC-BPPV. Apogeotropic LSC-BPPV is more challenging to treat.
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