Retained distal protection device during carotid artery stenting necessitating carotid endarterectomy: A complication and management considerations
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Updated: Feb 7, 2026

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Published on: May 14, 2013
Paul Page1, David Niemann1, Colin Son1
1Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
Insights
A rare complication of carotid artery stenting (CAS) involving a retained distal protection device (DPD) required surgical intervention. This case highlights the need for expertise in managing retained devices during neuroendovascular procedures.
Area of Science:
- Neuroendovascular techniques
- Cerebrovascular diseases
- Interventional neuroradiology
Background:
- Neuroendovascular techniques have transformed cerebrovascular disease management.
- Distal cerebral protection devices (DCPDs) reduce embolic strokes during carotid artery stenting (CAS).
- No guidelines exist for managing retained foreign bodies in cerebral vasculature.
Observation:
- An 88-year-old male undergoing CAS for symptomatic stenosis experienced a retained DCPD.
- The retained device necessitated open surgical carotid endarterectomy.
- The surgical procedure involved removing the device and stent.
Findings:
- Carotid artery angioplasty and stenting with DCPDs can rarely lead to retained devices.
- Retained DCPDs pose a significant risk of complications.
- Open surgical intervention may be required for device and stent removal.
Implications:
- Clinicians must be prepared for rare complications like retained DCPDs during CAS.
- Expertise in foreign body retrieval and salvage techniques is crucial.
- This case underscores the importance of managing complications in neuroendovascular procedures.
Background:
Neuroendovascular techniques have significantly altered the treatment paradigm of cerebrovascular diseases. Since the introduction of distal cerebral protection devices (DCPD), the incidence of embolic strokes during carotid artery stenting (CAS) has been significantly reduced. Treatment guidelines for retained foreign bodies in the cerebral vasculature do not exist.
Case Description:
Here, we present the case of an 88-year-old male who, during carotid artery angioplasty and stenting for symptomatic carotid artery stenosis, suffered from a retained distal protection device ultimately requiring open surgical carotid endarterectomy including removal of the retained device and stent.
Conclusions:
Carotid artery angioplasty and stenting utilizing distal protection devices is a commonly employed technique that may rarely result in retained devices. Knowledge of how to retrieve foreign bodies and the salvage techniques are essential to prevent complications from CAS.
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