A Case of Filter Retrieval With an Aspiration Catheter for Filter Occlusion in Emergency Carotid Artery Stenting

Area of Science:

• Interventional Cardiology
• Vascular Surgery
• Neurosurgery

Background:

• Emergency carotid artery stenting (CAS) is a critical procedure to restore blood flow in cases of severe carotid artery stenosis.
• Distal embolization, the blockage of small blood vessels by plaque or thrombus, is a significant risk during CAS.
• Protective filters are used to capture embolic material, but filter occlusion can impede the procedure.

Observation:

• A case involving an 81-year-old male patient undergoing emergency CAS is presented.
• The embolic protection filter deployed during the procedure became occluded due to significant plaque and thrombus accumulation.
• This occlusion posed a challenge to the successful completion of the stenting procedure.

Findings:

• The occluded filter was successfully retrieved using an aspiration catheter.
• The use of the aspiration catheter restored anterograde blood flow through the carotid artery.
• No further distal embolization events were noted after filter retrieval.

Implications:

• Aspiration catheter use is a viable strategy for managing filter occlusion during emergency CAS.
• This technique can help mitigate the risk of distal embolization when filters become obstructed.
• Successful filter retrieval ensures procedural success and improves patient outcomes in complex CAS cases.