J Korean Neurol Assoc.  1998 Aug;16(4):569-573.

Brainstem Infarction Following Snake Bite

Affiliations
  • 1Department of Neurology, Hallym University College of Medicine.

Abstract

Bleeding complications of central nervous system following snake bite are well known. However, nonhemorrhagic manifestations such as ischemic stroke are extremely rare. As far as we know, only four such instances involving middle cerebral artery territory have ever been reported in the literature up to now. A 53-year-old farmer noted right side motor weakness and severe dysarthria 3 hours after a snake bite on right middle finger. Magnetic resonance T2WI showed high signal intensity on left pontine region extending to basal surface and bilateral tegmentum of the pons. He had neither atherogenic risk factors nor cardiogenic embolic sources. Laboratory findings were within normal limits except for mild consumptive coagulopathy. Cerebral angiogram revealed abrupt occlusion of proximal basilar artery. We report a case of brainstem infarction caused by a Korean viper (Agkistrodon blomhoffii brevicaudus) bite and discuss possible mechanisms for cerebral infarction.

Keyword

Brainstem infarction; Snake bite; Agkistrodon blomhoffii brevicaudus

MeSH Terms

Basilar Artery
Brain Stem Infarctions*
Brain Stem*
Central Nervous System
Cerebral Infarction
Dysarthria
Fingers
Hemorrhage
Humans
Middle Aged
Middle Cerebral Artery
Pons
Risk Factors
Snake Bites*
Snakes*
Stroke
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