Open AccessHyperperfusion Syndrome after Carotid Endarterectomy: A Transcranial Doppler Evaluation
Author(s) -
Alexandros D. Powers,
Robert R. Smith
Publication year - 1990
Publication title -
neurosurgery/neurosurgery online
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.485
H-Index - 34
eISSN - 1081-1281
pISSN - 0148-396X
DOI - 10.1227/00006123-199001000-00008
Subject(s) - medicine , carotid endarterectomy , transcranial doppler , pulsatility index , cardiology , doppler effect , endarterectomy , ultrasonography , carotid arteries , radiology , pregnancy , fetus , biology , genetics , physics , astronomy
Transcranial Doppler ultrasonography was used to evaluate 2 patients who developed hyperperfusion syndromes after carotid endarterectomy. During the initial postoperative period, each patient had symptoms that were associated with elevated flow velocities in the ipsilateral cerebral vasculature. In addition, vascular resistance of these vessels was found to be abnormally low, as reflected by the Gosling pulsatility index. As the patients' symptoms improved, flow velocities decreased to normal levels and pulsatilities were noted to increase proportionately. (Neurosurgery 26:56-60, 1990)