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• W3207326972 abstract "TOPIC: Critical Care TYPE: Medical Student/Resident Case Reports INTRODUCTION: Simultaneous bilateral cerebrovascular infarction is relatively uncommon and is an entity seen rarely in watershed cerebral infarctions which occur at the border between cerebral vascular territories in the setting of severe hypotension. CASE PRESENTATION: 84-year-old male with history of CAD, cerebellar stroke, peripheral arterial disease was admitted to the ICU with distributive shock and intubated for toxic metabolic encephalopathy. Initial CT head on admission was unremarkable. On day 2 of hospitalization his neuro assessment was notable for bilateral lower extremity paresis with preservation of sensation, proprioception and temperature but had sluggish reflexes and loss of motor strength. Repeat CT head did not show a bleed and subsequently, MRI brain with MRA head and neck revealed bilateral acute anterior cerebral artery strokes. Given the location and duration of symptoms he was not a TPA candidate and was treated with medical management with aspirin and statin. Echocardiogram and carotid ultrasounds were done that were unremarkable for embolic cause of stroke. DISCUSSION: The anterior cerebral artery is a major vessel supplying blood to the interhemispheric region. ACA territory infarction accounts for only 0.3% to 4.4% of cerebral infarctions. Bilateral ACA infarction is even rarer. Twenty-seven cases of ACA territory infarction were reported among 1490 cases of cerebral infarction in the Lausanne Stroke Registry; among them, only two cases had bilateral ACA territory infarction. Bilateral ACA infarction can occur due to vasospasm in the setting of subarachnoid hemorrhage caused by a rupture of aneurysms of the anterior communicating arteries or distal ACAs, thrombosis or embolism in case of anomaly of circle of Willis or bilateral anaplastic ACAs. In our patient the area of infarction was in a watershed zone bilaterally, unfortunately affected by hypotension which is rare in the absence of any of the above-mentioned anomalies as predisposing factors. The true incidence of bilateral ACA infarction is unknown, with few cases reported in the literature. CONCLUSIONS: This case report highlights the possibility of developing simultaneous bilateral cerebral infarctions in the setting of profound systemic hypotension and shock, especially if the patient has baseline chronic small vessel changes. REFERENCE #1: Orlandi G, Moretti P, Fioretti C, Puglioli M, Collavoli P, Murri L. Bilateral medial frontal infarction in a case of azygous anterior cerebral artery stenosis. Ital J Neurol Sci. 1998;19:106–108. doi: 10.1007/BF02427567. [PubMed] [CrossRef] [Google Scholar] REFERENCE #2: Gacs G, Fox AF, Barnett HJ, Vinuela F. Occurrence and mechanisms of occlusion of the anterior cerebral artery. Stroke. 1983;14:952–959. [PubMed] [Google Scholar] REFERENCE #3: Bogousslavsky J, Regli F. Anterior cerebral artery territory infarction in the Lausanne Stroke Registry. Clinical and etiologic patterns. Arch Neurol. 1990;47:144–150. [PubMed] [Google Scholar] DISCLOSURES: No relevant relationships by Imama Ahmad, source=Web Response No relevant relationships by Christine Blaski, source=Web Response No relevant relationships by Sneha Lakshman, source=Web Response" @default.
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• W3207326972 date "2021-10-01" @default.
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• W3207326972 title "A RARE CAUSE OF PARAPLEGIA: DISTRIBUTIVE SHOCK CAUSING BORDER ZONE STROKES" @default.
• W3207326972 doi "https://doi.org/10.1016/j.chest.2021.07.920" @default.
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