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Published on: June 26, 2020
[Early neurological complications after internal carotid endarterectomy]
Beata Nowak1, Jacek Nowak, Andrzej Tutaj
1Oddział Neurologii, Wojewódzki Szpital Specjalistyczny w Olsztynie.
Insights
Surgical reopening of internal carotid arteries is a safe procedure for preventing ischemic stroke, with a 12% rate of early neurological complications. The most severe complication, stroke, occurred rarely, indicating the procedure
Area of Science:
- Vascular Surgery
- Neurology
- Stroke Prevention
Context:
- Internal carotid artery stenosis is a major cause of ischemic stroke.
- Surgical intervention aims to restore arterial patency and prevent recurrent strokes.
- Neurological complications are a significant concern following carotid endarterectomy.
Purpose:
- To evaluate the incidence and nature of early neurological complications after surgical repair of internal carotid artery stenosis.
- To identify risk factors associated with these complications.
Summary:
- A study of 119 patients undergoing carotid endarterectomy for critical stenosis ( >70%) revealed a 12% rate of early neurological complications.
- Complications included ischemic stroke (6%), transient ischemic attacks (3%), cerebral hyperemia (1%), and cranial nerve palsy (3%).
- Risk factors identified were prior cerebral ischemia, contralateral artery stenosis, smoking, hypertension, and coronary artery disease, with females at higher risk.
Impact:
- Carotid endarterectomy is a relatively safe intervention for critical internal carotid artery stenosis.
- The risk of severe neurological complications, particularly ischemic stroke, is modest.
- Understanding risk factors can help optimize patient selection and management to minimize complications.
Background And Purpose:
Stenosis of internal carotid arteries is one of the leading causes of ischemic stroke. Surgical restoration of arterial patency is the primary therapeutic method, aimed to prevent future ischemic stroke. This treatment mode is mainly reserved for patients with recurrent stenoses of internal carotid artery. Endarterectomy of internal carotid artery poses some risk of complications, and neurological complications are among the most dangerous ones. The purpose of the study was to assess early neurologic complications after surgical reopening of the affected arteries.
Material And Methods:
The study included 119 patients being operated because of critical stenosis of an internal carotid artery in the Department of General and Vascular Surgery of the Provincial Specialist Hospital in Olsztyn between 1999 and 2003. The main indications for surgical treatment were episodes of sustained cerebral ischemia and stenosis of an internal carotid artery exceeding 70%, documented with the ultrasound or angiographic examination.
Results:
Neurologic complications occurred in 16 patients (12%). Ischemic stroke occurred in 6 cases, transient ischemic attacks in 4 cases, acute cerebral hyperemia in one case and four patients suffered from transient cranial nerve palsy. The most important risk factors of complications were: a previous episode of cerebral ischemia, significant stenosis of a contralateral artery, nicotinism, arterial hypertension and coronary artery disease. Females are exposed to a significantly greater risk of complications.
Conclusions:
Surgical reopening of internal carotid arteries is a relatively safe therapeutic method with a modest risk of neurological complications, with the most dangerous and potentially lethal ischemic stroke occurring relatively rarely.
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