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Updated: Aug 3, 2026
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Bilateral Common Carotid Artery Occlusion as an Adequate Preconditioning Stimulus to Induce Early Ischemic Tolerance to Focal Cerebral Ischemia
Published on: May 9, 2013
Transient contrast encephalopathy after carotid artery stenting
G Dangas1, L H Monsein, R Laureno
1Cardiovascular Research Foundation, Lenox Hill Heart & Vascular Institute, New York, New York 10022, USA. gdangas@crf.org
Summary
A rare case of temporary contrast-induced encephalopathy occurred after carotid artery stenting. This condition, characterized by confusion and weakness, resolved quickly with no lasting effects.
Area of Science:
- Neurology
- Radiology
- Vascular Surgery
Background:
- Carotid artery stenting is a common procedure for managing carotid artery stenosis.
- Contrast agents are frequently used during endovascular procedures, posing potential risks.
Observation:
- An 82-year-old man developed acute confusion and left hemiparesis following carotid stenting.
- Imaging revealed transient cortical enhancement and edema in the right cerebral hemisphere.
Findings:
- The patient's neurological deficits resolved within 48 hours.
- Neuroimaging confirmed the absence of persistent edema or infarction.
Implications:
- Transient contrast encephalopathy is a rare but reversible complication of carotid interventions.
- It is crucial to distinguish this from more severe conditions like cerebral infarction or hyperperfusion syndrome.
- Caution is advised for future contrast studies in affected patients.
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