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Massive Cerebral Microemboli after Protected Carotid Artery Angioplasty and Stenting Using a Distal Filter Embolic
Insights
Carotid artery stenting can cause brain embolisms, even with protective devices. This case highlights massive cerebral microemboli after protected stenting in a patient with vulnerable plaque.
Area of Science:
- Cerebrovascular disease
- Interventional cardiology
- Neurology
Background:
- Carotid artery angioplasty and stenting (CAS) is a procedure to open blocked carotid arteries.
- Distal cerebral embolization is a significant risk during CAS.
- Embolic protection devices (EPDs) are used to minimize this risk.
Observation:
- A patient with a vulnerable carotid plaque (lipid-rich necrotic core, intraplaque hemorrhage) underwent protected CAS using a distal filter EPD.
- Despite the EPD, the patient experienced massive cerebral microemboli.
Findings:
- The case demonstrates that even with modern embolic protection devices, vulnerable plaques pose a risk for significant cerebral microembolization during CAS.
- The presence of specific plaque characteristics, such as a lipid-rich necrotic core and intraplaque hemorrhage, may increase this risk.
Implications:
- This case underscores the need for careful patient selection and plaque assessment before CAS.
- Further research into improved embolic protection strategies or alternative treatments for patients with highly vulnerable carotid plaques is warranted.
- Understanding the limitations of current EPDs in specific high-risk scenarios is crucial for preventing periprocedural strokes.
Abstract:
A major concern associated with carotid artery angioplasty and stenting (CAS) is a periprocedural distal cerebral embolization. To prevent distal embolization, embolic protection devices (EPDs) have been developed. However, the risk of cerebral embolism after protected CAS in patents with a vulnerable plaque is controversial and either a silent or a symptomatic stroke can occur despite the use of EPDs. Here, we report a case of a massive cerebral microemboli after a protected CAS using a distal filter EPD for a vulnerable plaque with a lipid rich necrotic core and intraplaque hemorrhage.
