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Carotid endarterectomy (CEA) and carotid artery stenting (CAS) are not appropriate treatment procedure for internal carotid artery stenosis (ICAS) in some patients. The importance of plaque vulnerability and the treatment risk evaluation has been reported. We analyzed whether treatment selection contributes to the outcome. We retrospectively examined 121 patients who underwent CEA or CAS. Treatment was selected based on plaque vulnerability and the treatment risk evaluation. We selected CAS for patients with stable plaques and CEA for patients with unstable plaques, and considered the other treatment for high-risk patients. The patients were classified as the stable plaque (Stable: n = 42), the unstable plaque and CEA low risk (Unstable/Low: n = 30), and the CEA high-risk (Unstable/High: n = 49). Frequency of perioperative stroke, myocardial infarction, death, and systemic complications was examined. CEA and CAS were performed in 35 and 86 patients, respectively. One patient (2.9%) had a stroke in CEA and five patients (5.8%) in CAS (P = 0.50). Systemic complications were observed in two patients (5.7%) in CEA and six (7.1%) in CAS (P = 0.80). There were no differences in stroke (Stable; 2.4%, Unstable/Low; 3.2%, and Unstable/High; 8.2%) and systemic complications (Stable; 9.5%, Unstable/Low; 3.3%, and Unstable/High; 6.1%) among three groups (P = 0.44 and P = 0.59, respectively). The treatment selection based on plaque vulnerability and the treatment risk evaluation could provide good treatment outcome for high-risk patients. It is ideal to select an appropriate treatment for ICAS by one neurovascular team.

Treatment Strategy Based on Plaque Vulnerability and the Treatment Risk Evaluation for Internal Carotid Artery Stenosis