Hyperperfusion syndrome (HPS) is a rare but potentially fatal postoperative complication deriving from carotid artery stenting (CAS) and endarterectomy (CEA), while the pattern of post-operation cerebral blood flow (CBF) changes relating to HPS remained unclear. We had used pseudo continuous arterial spin labeling (pCASL) to monitore 4 consecutive time points at 24h, 48h, 72h, and 96h after CEA and CAS in patients with internal carotid artery (ICA) stenosis. We had found that attention should be focused on 72 hours after CAS and 48 hours after CEA to control blood pressure and prevent potential HPS.
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