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Updated: May 19, 2026
A Murine Model of Stent Implantation in the Carotid Artery for the Study of Restenosis
Published on: May 14, 2013
Carotid artery stenting performed with a flow-reversal technique: improved technical performance
Luis Henrique de Castro-Afonso1, Lívia de Oliveira, Octávio Marques Pontes-Neto
1Division of Interventional Neuroradiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
This study evaluated the use of the GORE flow reversal system in carotid artery stenting (CAS) for patients with carotid stenosis. Twelve symptomatic patients underwent CAS with the system. The procedure was successful in all cases, with no major complications reported. Neurological assessments showed stable scores before and after treatment. The average procedure time was 33.8 minutes, and flow reversal averaged 7.3 minutes. Temporary bradycardia occurred in six patients but did not lead to instability. The authors concluded that the system appears safe and effective, with improved technical performance. They suggest further studies comparing the GORE system to other protection devices.
Area of Science:
- Vascular surgery outcomes research within interventional cardiology
- Neurological complication prevention in endovascular procedures
- Endovascular stenting techniques in cerebrovascular medicine
Background:
Current CAS procedures face challenges in minimizing cerebral embolism risks. Prior research has shown that embolic protection devices reduce stroke risk during CAS. However, no prior work had resolved the optimal method for flow reversal during CAS. This gap motivated the investigation of the GORE flow reversal system. The system's design aims to reverse blood flow, potentially reducing embolic risk. Prior studies have not fully evaluated its technical performance in CAS. The system's potential benefits remain unclear. This paper's contribution lies in its prospective evaluation of the system's efficacy and safety. The study's findings may help refine CAS protocols.
Purpose Of The Study:
The goal was to assess the GORE flow reversal system's effectiveness in CAS. The study focused on technical performance and safety outcomes. Twelve patients with carotid stenosis were selected for evaluation. All participants had prior neurological symptoms. The study aimed to measure procedure and flow reversal times. Neurological outcomes were monitored pre- and post-treatment. The researchers sought to determine if the system improves CAS performance. The study also aimed to inform future device comparisons.
Main Methods:
The study used a prospective design with 12 symptomatic patients. All patients underwent pre-procedure imaging assessments. Carotid ultrasound, brain MRI, and MRA were performed. Procedure and flow reversal times were recorded. Neurological status was evaluated at three time points. NIHSS and mRS scores were used to assess outcomes. The GORE flow reversal system was the primary tool. The system's performance was compared against standard CAS metrics.
Main Results:
All 12 CAS procedures were successful. Mean procedure time was 33.8 minutes. Flow reversal time averaged 7.3 minutes. Temporary bradycardia occurred in six patients. No hemodynamic instability was observed. NIHSS scores remained stable post-procedure. mRS scores did not change during follow-up. No major complications were reported. Groin puncture and anesthesia risks were absent. The system showed improved technical performance.
Conclusions:
The GORE system demonstrated safety and effectiveness in CAS. The observed flow reversal times suggest improved performance. No neurological worsening occurred during follow-up. The system did not cause major complications. The study supports its use in selected patients. The findings align with the authors' stated goals. Further comparisons with other devices are recommended. The results may guide future CAS device selection.
Frequently Asked Questions
The study reports all 12 procedures were successful with no major complications and stable neurological scores.
Carotid ultrasound, brain MRI, and magnetic resonance angiography were conducted before CAS.
To assess the system's technical performance and determine if it improves CAS efficiency.
NIHSS and mRS scores were used pre- and post-treatment to evaluate neurological status.
The mean flow reversal time was 7.3 minutes across all 12 procedures.
The authors proposed studies comparing the GORE system with other protection devices to confirm its benefits.