Skull Vibration-Induced Nystagmus in Superior Semicircular Canal Dehiscence: A New Insight into Vestibular Exploration—A Review
Audiology Research
Dumas, G., Curthoys, I., et al. (2024).
Audiology Research, 14(1), 96-115.
This systematic review investigates the sensitivity and utility of the skull vibration-induced nystagmus test (SVINT) for identifying individuals with superior semicircular canal dehiscence (SCD).
No funding received
2000 to June 2023
Published studies (Not further specified)
10
The SVINT may be a useful bedside assessment tool when screening for SCD in individuals. Specific findings for this review include: <br />
<ul>
<li><span style="color: #333333;">A positive skull vibration-induced nystagmus (SVIN) response appeared more often than other objective, bedside measures including the Hennebert sign and the air-conducted Tullio phenomenon (ACTP).</span></li>
<li><span style="color: #333333;">SVINT demonstrated greater sensitivity for identifying SCD (55-100% sensitivity) compared to the Hennebert sign (21-25% sensitivity) and the ACTP (25-80% sensitivity). </span></li>
<li><span style="color: #333333;">The authors identified 400Hz as an optimal frequency and confirmed SVIN sensitivity</span><span style="color: #333333;"> in higher frequencies (500-700Hz). </span></li>
<li><span style="color: #333333;">The SVINT provided rapid, non-invasive information about the function of the third window mechanism. </span></li>
</ul>
<span style="color: #333333;">This review includes limitations such as small sample sizes, heterogeneity in SVINT protocols, and inadequate vibration frequencies. Additional research investigating different stimuli, protocols, and frequencies is needed.</span>
