Key result
Persistent trigeminal artery can channel carotid bifurcation microemboli to the brainstem, causing TIAs.
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The authors report two cases of transient ischemic attacks (TIA's) involving the brain stem. The TIA's were due to microemboli that originated from a carotid bifurcation atherosclerotic plaque and travelled through a persistent trigeminal artery.
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Waller et al. (1977) studied this question. Microemboli originating from carotid bifurcation atherosclerotic plaques and travelling through a persistent trigeminal artery caused brain stem transient ischemic attacks in two patients.
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