Altmann, Mathias and Ertl, Michael and Helbig, Horst and Schoemig, Beate and Bogdahn, Ulrich and Gamulescu, Maria-Andreea and Schlachetzki, Felix (2015) Low Endogenous Recanalization in Embolic Central Retinal Artery Occlusion-The Retrobulbar "Spot Sign". JOURNAL OF NEUROIMAGING, 25 (2). pp. 251-256. ISSN 1051-2284, 1552-6569
Full text not available from this repository. (Request a copy)Abstract
BACKGROUND AND PURPOSECentral retinal artery occlusion (CRAO) is most often indirectly diagnosed by lack of retinal perfusion. Direct embolus characterization may help to understand the natural course and low response to treatment. In a previous study we identified a hyperechoic signal within the optic nerve and in the central retinal artery (spot sign). METHODSIn this study we performed a follow-up investigation in 7 patients with CRAO and positive spot sign indicating the embolic cause of the occlusion after a median interval of 17 months (range 11-38 months) using a battery of tests (ocular color-coded sonography, optic coherence tomography [OCT], fundoscopy, amongst others). RESULTSThe spot sign persisted in all patients, none had high-grade internal carotid artery stenosis, stroke or transient ischemic attacks. Four patients were completely blind, 3 patients were able to recognize hand movements. OCT demonstrated retinal atrophy, and fundoscopy revealed only minimal arterial perfusion. CONCLUSIONSThe hyperechoic spot sign may be an important predictive prognostic marker for persistent loss of vision. Its persistence may indicate calcified or cholesterol emboli and may explain the low therapeutic success rate to thrombolysis. Further studies on their origin and significance in atherosclerotic disease are warranted.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | STROKE; THERAPY; THROMBOLYSIS; PROGNOSIS; ISCHEMIA; STENOSIS; EVENTS; PLAQUE; TRIAL; AORTA; Retrobulbar sonography; central retinal artery; retinal stroke; etiology |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Neurologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Jul 2019 11:39 |
| Last Modified: | 24 Jul 2019 11:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5886 |
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