Abstract
Background. Periodic lateralised epileptiform discharges (PLEDs) are EEG patterns consisting of periodic or pseudoperiodic unilateral, focal or hemispheric epileptiform discharges at a rate of 1-2Hz. PLEDs may be triggered by acute brain injuries or systemic metabolic changes such as fever, hyperglycaemia or electrolyte imbalance and may result in disturbance of consciousness and/or neurological deficits. Case report. A 58-year-old female with a history of focal epilepsy and deep brain haematoma presented with acute change in awareness, associated with EEG evidence of PLEDs, three days after a left internal carotid artery stenting procedure. Clinical examination, laboratory testing and MRI were unchanged with respect to pre-stenting investigations. Conclusion. In this patient, PLEDs may have been triggered by local haemodynamic changes due to reperfusion after stenting in a previously damaged brain area.
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