Abstract
Contrast-induced encephalopathy is a neurological complication related to contrast used in endovascular procedures or computed tomography (CT). The main risk factors are arterial hypertension, diabetes mellitus, chronic kidney disease (CKD), hyperosmolar contrasts, the amount of infused contrast and its direct infusion in the posterior cerebral territory, or pathologies with blood-brain barrier damage. Symptomatology is non-specific and may present as altered level of consciousness, neurological focality or seizures. Diagnosis is done by exclusion after ischemic or hemorrhagic stroke has been ruled out; CT or MRI are useful for differentiation. Generally, it appears shortly after exposure and the symptoms lasts 48−72h with complete recovery, although cases with persistence of symptoms or longer duration have been described. Treatment consists of monitoring, supportive measures and kidney replacement therapy (KRT) with hemodialysis (HD) in patients in chronic KRT program. It is important for the nephrologist to be aware of this entity given the susceptibility of the patient on HD as well as its potential therapeutic role in these patients.
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