Vestibulospinal function in two syndromes with spontaneous attacks of vertigo: evaluation by posturography

Area of Science:

• Neurology
• Otolaryngology
• Vestibular System Function

Background:

• Vestibular syndromes, including Menière's disease and sudden unilateral vestibular loss, can cause spontaneous vertigo.
• The vestibulospinal reflex is crucial for maintaining balance and posture.

Purpose of the Study:

• To evaluate the disturbance of the vestibulospinal reflex in patients with Menière's disease and sudden unilateral vestibular loss.
• To compare the diagnostic utility of posturography and rotational tests in assessing vestibulospinal reflex function.

Main Methods:

• Posturography was employed to record and analyze postural sway in patients with vestibular disorders.
• Patients with Menière's disease were assessed between attacks; those with sudden unilateral vestibular loss were studied 3-4 weeks post-attack.
• Rotational tests were also performed to assess vestibular asymmetry.

Main Results:

• Disturbed postural sway, indicative of vestibulospinal reflex impairment, was observed in 50% of patients compared to controls.
• Menière's disease showed a more significant impact on posturography, while unilateral vestibular loss exhibited greater asymmetry in rotation tests.
• A notable discordance exists between rotational test results and posturography findings, suggesting limitations of rotational tests alone.

Conclusions:

• The vestibulospinal reflex's functional status cannot be solely determined by rotational tests.
• Posturography is a valuable tool for a comprehensive evaluation of vestibular disorders, especially when other dizziness complaints are present.
• Integrating posturography into patient evaluations is essential for a complete understanding of vestibulospinal reflex disturbances.