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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Early acute hemispheric stroke after carotid endarterectomy. Pathogenesis and management
Giovanni Pappadà1, Francesco Vergani, Michele Parolin
1Neurosurgery Department, University of Milano-Bicocca, at San Gerardo Hospital, 20052 Monza, Milan, Italy. giovanni.pappada@fastwebnet.it
Insights
A major stroke after carotid endarterectomy (CEA) is often due to acute internal carotid artery (ICA) occlusion. Reopening the ICA can lead to good outcomes if the artery is successfully reopened and intracranial vessels remain patent.
Area of Science:
- Vascular Surgery
- Neurology
- Cerebrovascular Disease
Background:
- Stroke is a significant complication following carotid endarterectomy (CEA).
- Management strategies for post-CEA stroke require further definition.
- This study aims to establish a treatment algorithm for perioperative stroke after CEA.
Purpose of the Study:
- To review a series of patients experiencing stroke after CEA.
- To define an effective treatment algorithm for managing major stroke post-CEA.
- To analyze the outcomes of interventions for acute internal carotid artery occlusion.
Main Methods:
- A consecutive series of 413 CEAs in 390 patients was analyzed.
- Patients experiencing new or worsening ischemic hemispheric deficits within 72 hours post-surgery were included.
- Operations were performed under general anesthesia with EEG monitoring; shunting was based on EEG changes.
Main Results:
- Sixteen patients (3.9%) experienced perioperative stroke, with nine (2.2%) having major strokes.
- Acute internal carotid artery (ICA) occlusion was the primary cause in most major stroke cases.
- Seven of nine patients with major stroke underwent reoperation; ICA reopening was successful in six, with three achieving good outcomes.
Conclusions:
- Major stroke post-CEA is frequently caused by acute ICA occlusion, potentially with intracranial emboli.
- Successful reopening of the ICA is crucial for favorable outcomes.
- A planned management algorithm for perioperative stroke after CEA is proposed based on these findings.
Purpose:
A major stroke after carotid endareterectomy (CEA) is an event that should be managed according to a planned strategy. Literature data on this issue are not definitive. We reviewed our series in the attempt to define an algorithm of treatment if this complication occurs.
Methods:
A consecutive series of 413 CEAs in 390 patients was considered. All operations were performed under general anaesthesia and EEG monitoring. An indwelling shunt was inserted only according to EEG changes. Direct closure of the arteriotomy was performed in all cases. Intraoperative ultrasound was not routinely employed before 2004. Patients who suffered from the new onset of an ischaemic hemispheric deficit or the worsening of a pre-existing deficit within 72 h after surgery were included in the present study.
Results:
Sixteen patients (3.9%) suffered from perioperative stroke. Seven patients presented neurological deficits that rapidly and spontaneously resolved. In nine cases (2.2%) a major stroke occurred. Acute occlusion of the internal carotid artery (ICA), with or without embolic blocking of the omolateral M1 segment, occurred in eight cases; in one case a patent ICA was associated with the occlusion of two frontal branches of the omolateral middle cerebral artery. Seven cases were reoperated on. The ICA was reopened in all these cases except one. Among these seven cases, three (42%) had a good outcome.
Conclusions:
A major stroke after CEA is caused, in most of cases, by the acute ICA occlusion with or without intracerebral embolic occlusion. Reopening of the occluded ICA gives good results when intracerebral vessels are patent and when the occluded ICA is satisfactorily reopened. An algorithm of planned reactions in case of perioperative stroke is finally proposed.
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