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Neurologic sequelae with internal carotid artery occlusion
Archives of Surgery (Chicago, Ill. : 1960)
|April 1, 1987
Summary
Internal carotid artery occlusion (ICO) often causes no symptoms. When symptoms occur, they can be transient ischemic attacks or strokes, but permanent disability is uncommon, suggesting ICO risks may be overestimated.
Area of Science:
- Vascular Surgery
- Neurology
- Cerebrovascular Disease
Background:
- Internal carotid artery occlusion (ICO) is a significant vascular condition.
- Understanding the clinical course and outcomes of ICO is crucial for patient management.
- Previous concerns suggested ICO frequently leads to severe neurological deficits.
Purpose of the Study:
- To retrospectively review the clinical course of internal carotid artery occlusion (ICO).
- To evaluate the neurological sequelae associated with ICO.
- To assess the impact of ICO on outcomes following reconstructive carotid surgery.
Main Methods:
- Retrospective review of 97 patients with 106 instances of internal carotid artery occlusion (ICO).
- Analysis of neurological symptoms, stroke types, and long-term disabling sequelae.
- Evaluation of intraoperative findings and postoperative complication rates during carotid surgery.
Main Results:
- Over half of ICO instances were asymptomatic.
- Symptomatic occlusions included transient ischemic attacks (TIAs) and fixed strokes.
- Only 10% of patients experienced permanent disabling neurological sequelae.
- Women were twice as likely as men to have a fixed stroke with ICO.
- Carotid surgery with shunts did not increase postoperative stroke risk (1.8%).
Conclusions:
- The risk of serious fixed neurological deficits from ICO may be overestimated.
- ICO presence does not appear to adversely affect outcomes of carefully performed contralateral carotid endarterectomy.
- Further research into ICO management and risk stratification is warranted.