vHIT Testing for Presentation of Dizziness at a Comprehensive Stroke Center
Stroke, Acute, Vertigo, Vertigo, Peripheral
About this trial
This is an interventional diagnostic trial for Stroke, Acute
Eligibility Criteria
Inclusion Criteria: Adults between the ages of 18-90 Admitted to the MUSC ED with symptomatic dizziness, concerning for a stroke vs peripheral vestibular dysfunction. Exclusion Criteria: Prisoners COVID + Cognitively Impaired Individuals
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
vHIT testing
Standard of Care
For the research portion of this study, following standard of care examinations listed above, the patient would have a vHIT headset placed on their head for approximately 3-5 minutes to test if they exhibit corrective saccadic movements and to measure gain reduction to identify vestibular hypofunction. During vHIT testing a commercially available mono-ocular video oculography system will be donned on the patient. Subjects will be instructed to maintain fixation at a target from 1 m distance. A study team member will deliver at least 5 head impulses per side in the horizontal and vertical planes with unpredictable timing and direction. A neurotologist will then evaluate the VOR gain or the ratio of eye velocity over-head velocity. The presence of refixation (catch-up) saccades, either overt or covert, will be evaluated by the study team. In line with previous literature, the vHIT testing will be considered to be abnormal if VOR gain is <0.8 in the presence of refixation saccades .
The intervention group will be compared to standard of care provided to patients currently admitted for dizziness. Standard of care includes National Institute of Health Stroke Scale evaluation, evaluation by a neurologist, and a CT scan or MRI if warranted.