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AJNR - American Journal of Neuroradiology

Published ahead of print on September 20, 2007
doi: 10.3174/ajnr.A0675

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American Journal of Neuroradiology 28:1769-1770, October 2007
© 2007 American Society of Neuroradiology

Case Report
INTERVENTIONAL

Trigeminocardiac Reflex in Embolization of Intracranial Dural Arteriovenous Fistula

X. Lv^a, Y. Li^a, M. Lv^a, A. Liu^a, J. Zhang^a and Z. Wu^a

^a From the Beijing Neurosurgical Institute and the Neurointerventional Department, Beijing Tiantan Hospital, Capital Medical University, Beijing, China

Please address correspondence to Wu Zhongxue, MD, Beijing Neurosurgical Institute, Neuroradiological Department, No. 6, Tiantan Xili, Beijing, China 100050; e-mail: ttyyzjb{at}sina.com

SUMMARY: We report a case of immediate reproducible and reflexive response of asystole upon stimulation of Onyx injection during embolization of a tentorial dural arteriovenous fistula in a 53-year-old man. Upon recognition of the reflexive relationship between Onyx injection and increased vagal tone, the patient was given anticholinergic in an effort to block cholinergic hyperactivity. After atropine was given, no further dysrhythmias occurred.

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