PT  - JOURNAL ARTICLE
AU  - Hyung Lee
AU  - Hyon-An Yi
AU  - In-Sung Chung
AU  - Seong-Ryong Lee
TI  - Long-term outcome of canal paresis of a vascular cause
AID  - 10.1136/jnnp.2009.180497
DP  - 2011 Jan 01
TA  - Journal of Neurology, Neurosurgery & Psychiatry
PG  - 105--109
VI  - 82
IP  - 1
4099  - http://jnnp.bmj.com/content/82/1/105.short
4100  - http://jnnp.bmj.com/content/82/1/105.full
SO  - J Neurol Neurosurg Psychiatry2011 Jan 01; 82
AB  - 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, 14–85 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.