Long-term outcome of canal paresis of a vascular cause
- Author(s)
- Hyung Lee; Hyon-An Yi; In-Sung Chung; Seong-Ryong Lee
- Keimyung Author(s)
- Lee, Hyung; Yi, Hyon Ah; Lee, Seong Ryong; Chung, In Sung
- Department
- Dept. of Neurology (신경과학)
Dept. of Pharmacology (약리학)
Dept. of Preventive Medicine (예방의학)
Institute for Medical Science (의과학연구소)
- Journal Title
- Journal of Neurology, Neurosurgery and Psychiatry
- Issued Date
- 2011
- Volume
- 82
- Issue
- 1
- Abstract
- There have been several reports on the progress of the
caloric response of vestibular neuritis, but little is known
about the recovery of canal paresis (CP) of a vascular
cause. This study found that the caloric response
normalised in 20 (67%) of 30 patients with CP
associated with posterior circulation ischaemic stroke
who were followed for at least 1 year (mean,
42.5 months; range, 14e85 months). The most
commonly infarcted territory on brain MRI associated
with CP was in the distribution of the anterior inferior
cerebellar artery (26/30, 87%). None of the patients who
were followed for >5 years after the onset of vertigo
showed persistent CP. Residual dizziness did not differ
significantly between patients with or without CP at the
final follow-up. These findings suggest that CP
associated with posterior circulation ischaemic stroke
often has a good long-term outcome. Following patients
for at least 5 years increases the likelihood of
normalisation of the vestibular response to caloric
stimulation.
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