Transcranial Doppler evaluation of cerebral hyperperfusion syndrome after carotid endarterectomy.

Cerebral hyperperfusion syndrome after carotid endarterectomy is rare. Unilateral headache, confusion, seizures or focal neurological signs may occur and intracranial haemorrhage may be a terminal event. We report a case of hyperperfusion accompanied by transient hemiparesis. The changes in cerebral perfusion were documented using transcranial Doppler sonography which helped to make the diagnosis.