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Otolith dysfunction in recurrent benign paroxysmal positional vertigo after mild traumatic brain injury
Gang Chen1, Xuening Zhao1, Gang Yu1
1a Department of Otolaryngology - Head and Neck Surgery , Shandong Provincial Hospital Affiliated to Shandong University , Jinan , China.
Acta Oto-Laryngologica
|February 5, 2019
Summary
Recurrent benign paroxysmal positional vertigo (BPPV) after mild traumatic brain injury (mTBI) is linked to secondary utricular dysfunction. Ocular vestibular evoked myogenic potential (oVEMP) tests revealed significant differences in recurrent BPPV patients, suggesting a role in pathogenesis.
Area of Science:
- Neurology
- Otolaryngology
- Vestibular System
Background:
- The mechanisms behind recurrent benign paroxysmal positional vertigo (BPPV) after trauma remain unclear.
- Mild traumatic brain injury (mTBI) can lead to BPPV, but factors influencing its recurrence are not well understood.
Purpose of the Study:
- To investigate the role of secondary otolith dysfunction in the recurrence of BPPV following mTBI.
- To evaluate the diagnostic value of vestibular evoked myogenic potential (VEMP) tests in identifying otolith dysfunction related to recurrent BPPV.
Main Methods:
- A retrospective review of 42 patients diagnosed with BPPV after mTBI.
- Patients were categorized into recurrent and non-recurrent BPPV groups.
- Both cervical VEMP (cVEMP) and ocular VEMP (oVEMP) tests were administered to all participants.
Main Results:
- No significant difference in abnormal cervical VEMP (cVEMP) responses was found between recurrent (26.7%) and non-recurrent (18.5%) BPPV groups.
- Abnormal ocular VEMP (oVEMP) responses were significantly more prevalent in the recurrent BPPV group (60.0%) compared to the non-recurrent group (22.2%).
Conclusions:
- Ocular VEMP abnormalities are significantly higher in patients with recurrent BPPV after mTBI.
- Secondary utricular dysfunction is implicated as a potential contributing factor to the recurrence of traumatic BPPV.
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