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A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Risk factors and predictive model for restenosis after endovascular recanalization for chronic internal carotid
Xiguang Fu1, Haoyu Zhu1, Yuqi Song1
1Department of Neurosurgery, Beijing Neurosurgical Institute, Capital Medical University, China; Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, China.
Insights
Restenosis occurs in 23.5% of patients after successful endovascular recanalization for chronic internal carotid artery occlusion (CICAO). Key risk factors include artery tortuosity, stump morphology, and residual stenosis.
Area of Science:
- Vascular Surgery
- Interventional Neurology
- Cardiovascular Research
Background:
- Limited evidence exists on restenosis after endovascular treatment for chronic internal carotid artery occlusion (CICAO).
- Successful revascularization for CICAO requires understanding post-procedure restenosis risks.
- Developing predictive models for restenosis is crucial for patient stratification.
Purpose of the Study:
- To investigate the incidence of restenosis after successful endovascular recanalization for CICAO.
- To identify independent risk factors associated with restenosis.
- To develop a novel risk score for stratifying restenosis risk in CICAO patients.
Main Methods:
- Retrospective cohort study of 204 patients with CICAO undergoing successful endovascular recanalization.
- Assessment of restenosis incidence via imaging follow-up (mean 16.1 months).
- Multivariable regression analysis to identify risk factors and develop a predictive model.
Main Results:
- A restenosis rate of 23.5% (47/204 patients) was observed.
- Independent predictors identified: internal carotid artery tortuosity, non-tapered stump morphology, and residual stenosis >30%.
- A predictive model demonstrated good performance (AUC 0.758 training, 0.757 test).
Conclusions:
- Successful endovascular recanalization for CICAO has a significant restenosis rate of 23.5%.
- Internal carotid artery tortuosity, non-tapered stump morphology, and residual stenosis >30% are key predictors.
- These findings aid in risk stratification and personalized patient management for CICAO.
Background:
Current evidence regarding restenosis after successful endovascular recanalization for chronic internal carotid artery occlusion (CICAO) remains limited. This study aimed to investigate the incidence and risk factors of restenosis following technically successful revascularization for CICAO, and to develop a novel risk score for risk stratification.
Methods:
This retrospective cohort study included 204 patients with CICAO who underwent successful endovascular recanalization. The incidence of restenosis was assessed, risk factors were identified through multivariable regression analysis, and a predictive model for restenosis was developed using multivariable regression analysis.
Results:
During a mean imaging follow-up duration of 16.1 ± 8.5 months, 47 patients (23.5 %) developed internal carotid artery restenosis or reocclusion. A multivariable logistic regression model constructed using backward stepwise regression demonstrated an area under the curve values of 0.758 in the training set and 0.757 in the test set. The model identified three independent risk factors: internal carotid artery tortuosity, non-tapered stump morphology, and residual stenosis > 30 %.
Conclusion:
This study demonstrated a restenosis rate of 23.5 % following successful endovascular recanalization for CICAO. Internal carotid artery tortuosity, non-tapered stump morphology, and residual stenosis > 30 % were identified as independent predictors of restenosis.
