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Episodic Monocular Vision Loss After Implantation of a Vagal Nerve Stimulator

Leo Sheck, MBChB; and Helen Danesh Meyer, MD, MBChB, FRANZCO
[+] Article, Author, and Disclosure Information

From University of Auckland, Auckland 1142, New Zealand.

Potential Conflicts of Interest: None disclosed.

Ann Intern Med. 2011;155(9):648-649. doi:10.7326/0003-4819-155-9-201111010-00022
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Grahic Jump Location
Computed tomography angiogram of the carotids.

The image shows the close proximity of the vagal nerve stimulator electrode with the left common carotid artery.

Grahic Jump Location




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Further data after 6 month follow up of the reported patient
Posted on November 24, 2011
Leo, Sheck, ocular genetics fellow, Helen Danesh-Meyer
University of Auckland
Conflict of Interest: None Declared

It was more than six months between our last consultation with this patient and the publication of our case report. We would like to provide follow-up information. The vagal nerve stimulator has remained on and she had no further episodes of left monocular vision loss. It has also transpired that at the time of her visual loss episodes, there was a death in her school and she had been under considerable stress. Although left carotid vasospasm is a physiologically and clinically plausible diagnosis for her symptoms, it is possible that her symptoms were functional in nature. We want to emphasize that the vagal nerve stimulator is likely to be a safe and effective treatment for the majority of patients suffering from intractable seizures.

Conflict of Interest:

None declared

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