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Reversible Encephalopathy Due to Venous Hypertension From Arteriovenous Hemodialysis Graft

Venous congestive encephalopathy is a rare complication in patients with arteriovenous hemodialysis grafts. It commonly manifests as encephalopathy of fluctuating severity, often with seizures. Because these patients typically have multiple significant chronic health problems, venous hypertension’s contribution to the patient’s cognitive decline can easily be overlooked. This nonspecific presentation can make diagnosis challenging, therefore delaying treatment. We describe a case of progressive, fluctuating encephalopathy with seizures due to cerebral venous congestion caused by arterial shunting from an upper limb arteriovenous (AV) fistula to the proximal venous system, that was initially unrecognized, yet ultimately reversed by elimination of the source of venous hypertension.