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Updated: Jun 25, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
Hyperperfusion syndrome after carotid revascularization
Konstantinos G Moulakakis1, Spyridon N Mylonas, Giorgos S Sfyroeras
1First Department of Vascular Surgery, "Red Cross Hospital", Athens, Greece.
Insights
Cerebral hyperperfusion syndrome, a rare complication of carotid revascularization, involves impaired blood flow regulation. Early detection and management are crucial to prevent fatal outcomes like intracranial hemorrhage.
Area of Science:
- Neurology
- Vascular Surgery
- Neurosurgery
Background:
- Cerebral hyperperfusion syndrome (CHS) is a serious complication following carotid revascularization procedures.
- It can occur after both carotid endarterectomy and carotid artery stenting.
- The underlying mechanisms involve impaired cerebral autoregulation and altered cerebral hemodynamics.
Purpose of the Study:
- To synthesize current literature on cerebral hyperperfusion syndrome.
- To review clinical manifestations, pathophysiologic pathways, prediction, and management strategies.
- To analyze recent case series of CHS after carotid revascularization.
Main Methods:
- Comprehensive literature review.
- Synthesis of existing data on CHS.
- Analysis of recent clinical series.
Main Results:
- CHS is linked to impaired cerebral autoregulation and hemodynamic changes post-revascularization.
- Intracranial hemorrhage is a potentially fatal consequence of CHS.
- The review covers clinical presentation, pathophysiology, prediction, and management.
Conclusions:
- Cerebral hyperperfusion syndrome requires careful monitoring after carotid revascularization.
- Understanding the pathophysiology is key to predicting and managing CHS.
- Further research into optimal management strategies is warranted.
Abstract:
Cerebral hyperperfusion syndrome is a rare, serious complication of carotid revascularization either after carotid endarterectomy or carotid stent placement. Impaired cerebral autoregulation and post-revascularization changes in cerebral hemodynamics are the main mechanisms involved in the development of the syndrome. Hyperperfusion syndrome may be fatal once an intracranial hemorrhage occurs. This article reviews the literature, intending to make a synthesis of all new data concerning the clinical manifestations of hyperperfusion syndrome, the pathophysiologic pathways involved in its development, the prediction, and the appropriate management. Also, a review of the most recent series of hyperperfusion syndrome following carotid revascularization, both with classic open endarterectomy and carotid artery stenting has been performed.
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