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Updated: Jul 7, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Delay from symptoms to carotid endarterectomy
1Department of Public Health and Clinical Medicine, Umeå Stroke Centre, Norrlands University Hospital, Umeå, Sweden. elias.johansson@medicin.umu.se
Insights
Delays in carotid endarterectomy (CEA) for symptomatic carotid stenosis led to significant risks. Many patients experienced additional cerebrovascular events before surgery, with risks comparable to perioperative complications.
Area of Science:
- Neurology
- Vascular Surgery
- Public Health
Background:
- Symptomatic carotid stenosis poses a significant risk of stroke.
- Carotid endarterectomy (CEA) is a crucial intervention for reducing this risk.
- Timely intervention is critical to prevent further cerebrovascular events.
Purpose of the Study:
- To evaluate the time interval between cerebrovascular symptoms and CEA.
- To identify factors contributing to delays in CEA.
- To assess the occurrence of additional cerebrovascular events before CEA.
Main Methods:
- Observational, single-center study.
- Included 275 patients with symptomatic carotid stenosis (>=50%) between 2004 and 2006.
- Analyzed time from symptom onset to CEA, and incidence of pre- and perioperative cerebrovascular events.
Main Results:
- Median time from symptom to CEA was 11.7 weeks, decreasing to 6.9 weeks by study end.
- Only 7% of patients received CEA within 2 weeks of symptom onset.
- 28% of patients experienced additional cerebrovascular events before CEA; 1.4% had strokes precluding surgery.
Conclusions:
- Substantial delays exist between cerebrovascular symptom onset and CEA, exceeding the recommended 2-week timeframe.
- A significant proportion of patients suffer additional cerebrovascular events prior to CEA.
- The risk of a severe stroke before CEA is comparable to the risk of severe complications from the procedure.
Objectives:
To investigate the time between cerebrovascular symptom and carotid endarterectomy (CEA), what prolongs this time and if and when the patients suffer additional cerebrovascular events.
Design:
Observational.
Setting:
Single Centre study at a specialized Stroke Centre.
Subjects:
A total of 275 patients with > or =50% symptomatic carotid stenosis (according to the NASCET-criteria) between 1 January 2004 and 31 March 2006.
Main Outcome Measures:
Time between cerebrovascular symptom and CEA, time between different parts of the investigation, additional cerebrovascular symptoms before CEA and as perioperative complication.
Results:
A total of 128 patients underwent CEA. The median time between symptom and CEA was 11.7 weeks in the beginning and 6.9 weeks at the end of the study. Seven per cent were operated within 2 weeks and 11% between 2 and 4 weeks after their cerebrovascular symptom. The time delays were most pronounced between symptom onset and arrival at the Umeå Stroke Centre from the secondary hospitals and between the decision to recommend CEA and the CEA. Twenty-eight per cent of the patients who were intended for surgery suffered additional cerebrovascular events, 1.4% suffered a major stroke which excluded the indication of CEA and 3.0% of the CEA patients suffered a stroke with functional dependence within 30 days of the operation.
Conclusions:
The delay between symptom and CEA was substantially longer than the desired 2 weeks. Many patients suffered additional cerebrovascular events before CEA. The risk of a severe additional stroke before CEA was about the same as the risk of a severe complication from the CEA.
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