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Iatrogenic Arterial Spasm Relieved by Intraarterial Mannitol Infusion

David Fortina, Eva Osztiea and Edward A. NeuweltGo,a

a From the Departments of Neurology and Neurosurgery, Oregon Health Sciences University, Portland, OR.



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  		FIG 1. Spasm was typically identified when testing to confirm catheter position.

A, Arterial spasm in the right internal carotid artery identified at the time of catheter placement before mannitol infusion in patient 11. Open arrow depicts the tip of the catheter in the right internal carotid artery, with 80% concentric spasm extending up for 1.5 cm (arrowhead) after infusion of a nonionic iodinated contrast agent.

B, Complete resolution of spasm (arrowhead) after slow intraarterial infusion of 10 mL of mannitol in the right internal carotid artery.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X