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 Volume 65, Number 8, October 25, 2005
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NEUROLOGY 2005;65:1287-1290
© 2005 American Academy of Neurology
Brief Communications

Rotational vertebral artery syndrome: Oculographic analysis of nystagmus

K. -D. Choi, MD, H. -Y. Shin, MD, J. S. Kim, MD, S. -H. Kim, MD, O. -K. Kwon, MD, J. -W. Koo, MD, S. -H. Park, MD, B. -W. Yoon, MD and J. -K. Roh, MD

From the Departments of Neurology (Drs. Choi, J.S. Kim, Park, Yoon, and Roh), Neurosurgery (Dr. Kwon), Radiology (Dr. S.-H. Kim), and Otolaryngology and Head and Neck Surgery (Dr. Koo), Seoul National University College of Medicine; and the Department of Neurology, Samsung Medical Center (Dr. Shin), Seoul, Korea.

Address correspondence and reprint requests to Dr. Ji Soo Kim, Department of Neurology, Seoul National University College of Medicine, Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707 Korea; e-mail: jisookim{at}snu.ac.kr

In four patients with rotational vertebral artery syndrome (RVAS), the initial nystagmus was mostly downbeat, with the horizontal and torsional components beating toward the compressed vertebral artery side (n = 3) or directed away (n = 1). Three patients showed spontaneous reversal of the nystagmus and two exhibited no or markedly diminished responses on immediate retrial of head rotation (habituation). The patterns of nystagmus suggest that RVAS may result from differing mechanisms.

Additional material related to this article can be found on the Neurology Web site. Go to www.neurology.org and scroll down the Table of Contents for the October 25 issue to find the title link for this article.

Supported by Korea Research Foundation Grant (KRF-2004-003-E00202).

Disclosure: The authors report no conflicts of interest.

Received April 27, 2005. Accepted in final form June 24, 2005.


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