A Case of Cerebral Infarction Provoked by Carbon Monoxide A Case of Cerebral Infarction Provoked by Carbon Monoxide Poisoning in Probable Unilateral Moyamoya Disease
Department of Neurology, Hallym University College of Medicine, Chuncheon Sacred Heart Hospital, Chuncheon, Korea
ABSTRACT
Background: Hemodynamic reserve is known to be reduced in moyamoya disease, which could account for increased susceptibility to cerebral ischemia. We report a case of acute cerebral infarction provoked by carbon monoxide (CO) poisoning in probable unilateral moyamoya disease. Case Report: A 26-year-old woman presented with mental changes followed by left hemiparesis after an exposure to CO. The initial serum carboxyhemoglobin level was 25.2%. She was alert but showed clinical signs of diffuse right hemispheric dysfunction. Brain MRI showed large territorial infarction in the right middle cerebral artery (MCA) and anterior cerebral artery (ACA). Brain MRA and conventional angiogram demonstrated complete occlusion of the proximal part of the right MCA and the ACA, which was suggestive of probable unilateral moyamoya disease. Conclusions: It was likely that cerebral hypoxia induced by CO poisoning produced acute cerebral infarction in a hemodynamically compromised state.