Abstract Details

Title Transient Vestibular Symptoms Preceding Posterior Circulation Stroke: A Prospective, Multicenter, Observational Study

Topic Neuro-ophthalmology/Neuro-otology

Presentation(s) S32 - Neuro-ophthalmology/Neuro-otology (4:54 PM-5:06 PM)

Poster/Presentation
Number 008

Objective To assess the characteristics of preceding dizziness before posterior circulation infarction compared to that before vestibular neuritis and to clarify factors can help discriminate them.

Background For diagnosis of strokes presenting acute prolonged vestibular syndrome, findings of clinical examination, such as HINTS (negative head impulse tests, detection of direction-changing gaze-evoked nystagmus, and presence of skew deviation) has been developed as well as neuroimaging, but the diagnosis of transient spontaneous vestibular syndrome is still challenging.

Design/Methods

We included patients with posterior circulation infarction (PC group) and vestibular neuritis (VN group) occurred within 1 week. We investigated the duration, time, pattern, frequency of preceding dizziness and combined symptoms within 3 months of attack in both groups.

Results 344 patients were enrolled in PC group and 74 patients were included in VN group. Mean age was younger in VN group (65.47 yrs vs. 60.90 yrs, p=0.002) but sex did not show any difference between two groups (p=0.894) History of hypertesion, diabetes and smoking were more frequent in PC group than VN group (p=0.000, 0.001 and 0.004). The number of patients had preceding dizziness within 3 months of attack did not significantly different between two groups (12.8% vs. 17.6%, p=0.349) Preceding dizziness in both group were lasted for less than 1 minute in half of the patients and third of VN group experienced preceding dizziness for less than 10 minutes. In both groups, preceding dizziness were happened 2~5 times in more than half of patients.

Conclusions There is no factors can predict the cause of preceding dizziness before posterior circulation stroke and vestibular neuritis. We need to be careful when we approach the diagnosis of transient dizziness in elderly patients with vascular risk factors.

Authors/Disclosures
Hyun Ah Kim PRESENTER	No disclosure on file
	No disclosure on file
	No disclosure on file
Ji-Yun Park (Presbyterian Medical Center)	No disclosure on file
	No disclosure on file
	No disclosure on file

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