03 April 2019 : Clinical Research
Risk Factors for Recurrent Carotid-Artery Stenosis Following Stenting Treatment
Ranran Meng1BCD, Xiangming Mi2BDF, Dengbin Sun2AE*DOI: 10.12659/MSM.913894
Med Sci Monit 2019; 25:2429-2434
Abstract
BACKGROUND: Carotid artery stenting (CAS) has been regarded as a reliable treatment approach for carotid artery stenosis. However, recurrent carotid artery stenosis after CAS affects long-term outcomes. In this study, we aimed to investigate the potential risk factors for carotid restenosis.
MATERIAL AND METHODS: We retrospectively analyzed the clinical data of patients diagnosed with carotid artery stenosis who underwent CAS implantation at our department from September 2012 to July 2015. Each included study patient was followed up with serial duplex ultrasound scanning. Kaplan-Meier estimates were used to evaluate freedom from restenosis and potential risk factors were analyzed.
RESULTS: There were 33 patients enrolled in our study. The mean age was 65.5±11.5 years. The technique was successfully achieved in all patients. No death or major stroke occurred after stenting. There were 2 events of minor stroke and one myocardial infarction within 30 days after stent implantation. All the patients were followed up for 3 years. Cumulative rates of freedom from recurrent stenosis at 1, 2, and 3 years were 87.4%, 74.6%, and 68.3% respectively. Cox multivariate regression analysis revealed that male sex, smoking and hyperlipidemia were independent risk factors associated with restenosis.
CONCLUSIONS: In this study, we identified that CAS was a reliable approach for carotid artery stenosis. Male sex, smoking, and hyperlipidemia were independent risk factors associated with restenosis. Thus, hyperlipidemia should be monitored and routine follow-up with ultrasonography are recommended especially for male patients with current or history of smoking.
Keywords: Carotid Artery Diseases, endovascular procedures, Graft Occlusion, Vascular, Risk Factors, Aged, 80 and over, Carotid Arteries, carotid stenosis, Endarterectomy, Carotid, Follow-Up Studies, Risk Assessment, Stents, Stroke, Time Factors
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