Sensitivity, Specificity, and Reproducibility of 2 kHz cVEMP and 4 kHz oVEMP Tone Burst in Superior Semicircular Canal Dehiscence Syndrome

Superior semicircular canal dehiscence (SSCD) creates a pathological "third window" in the inner ear, leading to characteristic auditory and vestibular symptoms. Although 0.5 kHz vestibular evoked myogenic potential (VEMPs) are commonly used, we aimed to evaluate the sensitivity, specificity, and reproducibility of VEMPs elicited with high-frequency tone bursts....

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If the study confirms adequate sensitivity and specificity for 2 kHz cVEMP and 4 kHz oVEMP tone bursts, audiologists diagnosing SSCD should consider standardizing to these specific frequencies to improve diagnostic accuracy and test reproducibility.

SSCD is frequently misdiagnosed; establishing reproducible, well-characterized VEMP protocols at specific frequencies could streamline diagnosis and reduce the diagnostic odyssey for affected patients.

1. 01Study evaluated 2 kHz cVEMP and 4 kHz oVEMP tone bursts specifically for SSCD diagnosis.
2. 02Sensitivity, specificity, and reproducibility were all assessed — a more rigorous diagnostic evaluation than many VEMP studies.
3. 03Superior semicircular canal dehiscence causes sound- and pressure-triggered symptoms due to a bony gap in the inner ear.
4. 04Optimizing VEMP frequency parameters may improve non-invasive identification of SSCD before CT confirmation.
5. 05Reproducibility data strengthen the clinical utility assessment beyond a single-time-point sensitivity/specificity analysis.

PMID

42868065

DOI

10.1159/aud/abnag014.

Journal

Audiology and Neurotology

Publication type

research_article

Evidence level

2b

Population

Patients with and without superior semicircular canal dehiscence syndrome

Intervention

2 kHz cervical VEMP (cVEMP) and 4 kHz ocular VEMP (oVEMP) tone-burst stimulation

Comparator

Patients without SSCD (controls)