1. The natural history of vertebral artery origin stenosis.
- Author
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Thompson MC, Issa MA, Lazzaro MA, and Zaidat OO
- Subjects
- Adult, Aged, Aged, 80 and over, Cerebral Angiography, Female, Follow-Up Studies, Humans, Ischemic Attack, Transient etiology, Ischemic Attack, Transient pathology, Kaplan-Meier Estimate, Magnetic Resonance Angiography, Male, Middle Aged, Retrospective Studies, Stents, Stroke etiology, Stroke pathology, Survival Analysis, Tomography, X-Ray Computed, Vertebral Artery diagnostic imaging, Vertebral Artery pathology, Vertebrobasilar Insufficiency diagnosis, Vertebrobasilar Insufficiency surgery, Young Adult, Vertebrobasilar Insufficiency pathology
- Abstract
Background: We sought to determine the long-term survival and natural history of vertebral artery origin stenosis (VAOS) as it relates to stroke., Methods: We retrospectively reviewed clinical data on patients admitted at a single institution for possible stroke between 2004 and 2007 and selected subjects who underwent angiography of the neck. We classified VAOS subjects as having "moderate" to "severe" (≥50%) occlusion. Age-, sex-, and race-matched control subjects with no evidence of VAOS on angiography were selected from our study population. Long-term follow-up data were collected and death certificates were searched for comparison among cases and controls. A Kaplan-Meier curve was plotted based on time to event (stroke or death)., Results: Fifty-eight of the 358 subjects were found to have VAOS (16.2%). Four subjects were excluded because of stenting; therefore, 54 cases and 54 matched controls were included for long-term follow-up analysis. In our study population, we calculated that the relative risk of having a stroke or dying in patients with VAOS was 6 times that of patients without VAOS (P < .02). The observed 5-year survival rate for patients with VAOS was 67% (36/54) compared to 89% (48/54) in control subjects (P < .01)., Conclusions: Patients with VAOS are at a significantly higher risk of having a stroke or dying. Subsequent prospective, multicenter studies are needed to validate our results., (Copyright © 2014. Published by Elsevier Inc.)
- Published
- 2014
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