Incidence of embolism associated with carotid artery stenting: open-cell versus closed-cell stents

2013 ◽  
Vol 119 (3) ◽  
pp. 642-647 ◽  
Author(s):  
Keun Young Park ◽  
Dong Ik Kim ◽  
Byung Moon Kim ◽  
Hyo Suk Nam ◽  
Young Dae Kim ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Carotid Artery Stenting ◽  
Artery Stenosis ◽  
Smoking History ◽  
Stent Design ◽  
Open Cell ◽  
Stent Type ◽  
Asymptomatic Patients ◽  
Closed Cell

Object Carotid artery stenting (CAS) can be an alternative option for carotid endarterectomy in the prevention of ischemic stroke caused by carotid artery stenosis. The purpose of this study was to evaluate the influence of stent design on the incidence of procedural and postprocedural embolism associated with CAS treatment. Methods Ninety-six symptomatic and asymptomatic patients, consisting of 79 males and 17 females, with moderate to severe carotid artery stenosis and a mean age of 69.0 years were treated with CAS. The stent type (48 closed-cell and 48 open-cell stents) was randomly allocated before the procedure. Imaging, procedural, and clinical outcomes were assessed and compared. The symptomatic subgroup (76 patients) was also analyzed to determine the influence of stent design on outcome. Results New lesions on postprocedural diffusion-weighted imaging (DWI) were significantly more frequent in the open-cell than in the closed-cell stent group (24 vs 12, respectively; p = 0.020). The 30-day clinical outcome was not different between the 2 stent groups. In the symptomatic patient group, stent design (p = 0.017, OR 4.173) and recent smoking history (p = 0.036, OR 4.755) were strong risk factors for new lesions on postprocedural DWI. Conclusions Stent design may have an influence on the risk of new embolism, and selecting the appropriate stent may improve outcome.

Effect of Open- vs Closed-Cell Stent Design on Periprocedural Outcomes and Restenosis After Carotid Artery Stenting: A Systematic Review and Comprehensive Meta-analysis

2018 ◽  
Vol 25 (4) ◽  
pp. 523-533 ◽  
Author(s):  
Pavlos Texakalidis ◽  
Stefanos Giannopoulos ◽  
Damianos G. Kokkinidis ◽  
Giuseppe Lanzino
Keyword(s):  
Carotid Artery ◽  
Carotid Artery Stenting ◽  
Meta Analysis ◽  
Stent Design ◽  
Open Cell ◽  
Stent Restenosis ◽  
Closed Cell ◽  
Ischemic Attack ◽  
In Stent Restenosis

Purpose:To compare periprocedural complications and in-stent restenosis rates associated with open- vs closed-cell stent designs used in carotid artery stenting (CAS). Methods: A systematic search was conducted to identify all randomized and observational studies published in English up to October 31, 2017, that compared open- vs closed-cell stent designs in CAS. Identified studies were included if they reported the following outcomes: stroke, transient ischemic attack (TIA), myocardial infarction (MI), hemodynamic depression, new ischemic lesions detected on imaging, and death within 30 days, as well as the incidence of in-stent restenosis. A random-effects model meta-analysis was employed. Model results are reported as the odds ratio (OR) and 95% confidence interval (CI). The I2 statistic was used to assess heterogeneity. Results: Thirty-three studies (2 randomized trials) comprising 20, 291 patients (mean age 71.3±3.0 years; 74.6% men) were included. Patients in the open-cell stent group had a statistically significant lower risk of restenosis ⩾40% (OR 0.42, 95% CI 0.19 to 0.92; I2=0%) and ⩾70% (OR 0.23, 95% CI 0.10 to 0.52; I2=0%) at a mean follow-up of 24 months. No statistically significant differences were identified for periprocedural stroke, TIA, new ischemic lesions, MI, hemodynamic depression, or death within 30 days after CAS. Sensitivity analysis of the 2 randomized controlled trials only did not point to any significant differences either. Conclusion: Use of open-cell stent design in CAS is associated with a decreased risk for restenosis when compared to the closed-cell stent, without significant differences in periprocedural outcomes.

scholarly journals Stent Design, Restenosis and Recurrent Stroke After Carotid Artery Stenting in the International Carotid Stenting Study

Stroke ◽  
2019 ◽  
Vol 50 (11) ◽  
pp. 3013-3020 ◽  
Author(s):  
Mandy D. Müller ◽  
John Gregson ◽  
Dominick J.H. McCabe ◽  
Paul J. Nederkoorn ◽  
H. Bart van der Worp ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Carotid Artery Stenting ◽  
Recurrent Stroke ◽  
Carotid Stenting ◽  
Hazard Ratio ◽  
Stent Design ◽  
Open Cell ◽  
Closed Cell

Background and Purpose— Open-cell carotid artery stents are associated with a higher peri-procedural stroke risk than closed-cell stents. However, the effect of stent design on long-term durability of carotid artery stenting (CAS) is unknown. We compared the medium- to long-term risk of restenosis and ipsilateral stroke between patients treated with open-cell stents versus closed-cell stents in the ICSS (International Carotid Stenting Study). Methods— Patients with symptomatic carotid stenosis were randomized to CAS or endarterectomy and followed with duplex ultrasound for a median of 4.0 years. We analyzed data from patients with completed CAS procedures, known stent design, and available ultrasound follow-up. The primary outcome, moderate or higher restenosis (≥50%) was defined as a peak systolic velocity of >1.3 m/s on ultrasound or occlusion of the treated internal carotid artery and analyzed with interval-censored models. Results— Eight hundred fifty-five patients were allocated to CAS. Seven hundred fourteen patients with completed CAS and known stent design were included in the current analysis. Of these, 352 were treated with open-cell and 362 with closed-cell stents. Moderate or higher restenosis occurred significantly less frequently in patients treated with open-cell (n=113) than closed-cell stents (n=154; 5-year risks were 35.5% versus 46.0%; unadjusted hazard ratio, 0.68; 95% CI, 0.53–0.88). There was no significant difference in the risk of severe restenosis (≥70%) after open-cell stenting (n=27) versus closed-cell stenting (n=43; 5-year risks, 8.6% versus 12.7%; unadjusted hazard ratio, 0.63; 95% CI, 0.37–1.05). The risk of ipsilateral stroke beyond 30 days after treatment was similar with open-cell and closed-cell stents (hazard ratio, 0.78; 95% CI, 0.35–1.75). Conclusions— Moderate or higher restenosis after CAS occurred less frequently in patients treated with open-cell stents than closed-cell stents. However, both stent designs were equally effective at preventing recurrent stroke during follow-up. Clinical Trial Registration— URL: http://www.isrctn.com/ . Unique identifier: ISRCTN25337470.

scholarly journals Carotid artery stenosis – Current evidence and treatment recommendations

2021 ◽  
Vol 5 (1) ◽  
pp. 2514183X2110016
Author(s):  
Mandy D Müller ◽  
Leo H Bonati
Keyword(s):  
Carotid Artery ◽  
Carotid Stenosis ◽  
Carotid Artery Stenosis ◽  
Artery Stenosis ◽  
Current Evidence ◽  
Asymptomatic Carotid Stenosis ◽  
Asymptomatic Carotid ◽  
Risk Of Death ◽  
Asymptomatic Patients

Background: Carotid artery stenosis is an important cause for stroke. Carotid endarterectomy (CEA) reduces the risk of stroke in patients with symptomatic carotid stenosis and to some extent in patients with asymptomatic carotid stenosis. More than 20 years ago, carotid artery stenting (CAS) emerged as an endovascular treatment alternative to CEA. Objective and Methods: This review summarises the available evidence from randomised clinical trials in patients with symptomatic as well as in patients with asymptomatic carotid stenosis. Results: CAS is associated with a higher risk of death or any stroke between randomisation and 30 days after treatment than CEA (odds ratio (OR) = 1.74, 95% CI 1.3 to 2.33, p < 0.0001). In a pre-defined subgroup analysis, the OR for stroke or death within 30 days after treatment was 1.11 (95% CI 0.74 to 1.64) in patients <70 years old and 2.23 (95% CI 1.61 to 3.08) in patients ≥70 years old, resulting in a significant interaction between patient age and treatment modality (interaction p = 0.007). The combination of death or any stroke up to 30 days after treatment or ipsilateral stroke during follow-up also favoured CEA (OR = 1.51, 95% CI 1.24 to 1.85, p < 0.0001). In asymptomatic patients, there is a non-significant increase in death or stroke occurring within 30 days of treatment with CAS compared to CEA (OR = 1.72, 95% CI 1.00 to 2.97, p = 0.05). The risk of peri-procedural death or stroke or ipsilateral stroke during follow-up did not differ significantly between treatments (OR = 1.27, 95% CI 0.87 to 1.84, p = 0.22). Discussion and Conclusion: In symptomatic patients, randomised evidence has consistently shown CAS to be associated with a higher risk of stroke or death within 30 days of treatment than CEA. This extra risk is mostly attributed to an increase in strokes occurring on the day of the procedure in patients ≥70 years. In asymptomatic patients, there may be a small increase in the risk of stroke or death within 30 days of treatment with CAS compared to CEA, but the currently available evidence is insufficient and further data from ongoing randomised trials are needed.

scholarly journals Effect of Carotid Artery Stenting on Cognitive Function in Patients With Carotid Artery Stenosis: Preliminary Results

2008 ◽  
Vol 29 (2) ◽  
pp. 265-268 ◽  
Author(s):  
A.S. Turk ◽  
I. Chaudry ◽  
V.M. Haughton ◽  
B.P. Hermann ◽  
H.A. Rowley ◽  
...  
Keyword(s):  
Cognitive Function ◽  
Carotid Artery ◽  
Carotid Artery Stenosis ◽  
Carotid Artery Stenting ◽  
Artery Stenosis ◽  
Preliminary Results

Transcarotid Artery Revascularization and Advances in Vascular Surgery for Carotid Artery Disease

2021 ◽  
Author(s):  
James Hu ◽  
◽  
Andy Sohn ◽  
Justin George ◽  
Rajesh Malik ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Vascular Surgery ◽  
Carotid Endarterectomy ◽  
Surgical Management ◽  
Carotid Artery Stenosis ◽  
Carotid Artery Stenting ◽  
Carotid Artery Disease ◽  
Artery Stenosis ◽  
Cerebrovascular Accidents ◽  
Artery Disease

Carotid artery atherosclerotic disease impacts over 2 million Americans annually. Since the advent of the carotid endarterectomy by Debakey in 1953, the surgical management of carotid artery stenosis has prevented cerebrovascular accidents. The technology utilized to manage carotid artery stenosis continued to evolve with the utilization of carotid artery stenting in 1989 and more recently transcarotid artery revascularization (TCAR). This review discusses the modern management of carotid artery stenosis with an emphasis on transcarotid artery revascularization (TCAR) and reversal of flow for reversal of flow for embolic protection.

scholarly journals A study on prevalence of carotid artery stenosis in acute ischaemic stroke patients in Amalapuram, Andhra Pradesh, India

2019 ◽  
Vol 7 (6) ◽  
pp. 2146
Author(s):  
Bonthu Mamatha Bharathi ◽  
Raveena Gullapalli
Keyword(s):  
Risk Factor ◽  
Carotid Artery ◽  
Ischaemic Stroke ◽  
Carotid Stenosis ◽  
Carotid Artery Stenosis ◽  
Acute Onset ◽  
Artery Stenosis ◽  
Doppler Study ◽  
Diastolic Velocity ◽  
Asymptomatic Patients

Background: Extra cranial carotid disease due to arteriosclerosis is usually associated with hypercholesterolemia and hyperlipidemia. Extra cranial carotid stenosis has been found to be less prevalent in black American and in Egyptians while intracranial disease is far more common Various methods includes transcranial doppler (TCD) ultrasonography, cerebral angiography, computed tomography angiography (CTA) and magnetic resonance angiography (MRA).Methods: All patients with ischaemic stroke of acute onset admitted in the medical wards of Konaseema institute of medical sciences between June 2018 and January 2019 were included in the study. All patients were subjected to CT scan brain study and colour Doppler study of extra cranial carotid arteries and vertebral arteries. Systolic and diastolic velocity of blood flow, carotid intimal medial thickness, presence of athermanous plaque and thrombus was looked for and then the percentage of stenosis of the affected arteries was calculated.Results: In the present study 0ut of 23 patients with carotid stenosis 9 patients had mild carotid stenosis, 8 patients had moderate stenosis and 6 patients had severe stenosis. Out of 23 patients with carotid stenosis the 11 patients have stenosis in the right carotid and 12 patients had stenosis in the left side. The site of stenosis is ICA in 17 patients and CCA in 6 patients.Conclusions: In present study every patient with carotid artery stenosis had one or the other risk factor for carotid atherosclerosis. In other words, there was no patient with carotid artery stenosis, without any risk factor in present study. Hence asymptomatic patients with these risk factors should be screened for carotid stenosis to prevent stroke.

Abstract WP167: Changing Face of Carotid Revascularization Procedures in the United States

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Saqib A Chaudhry ◽  
Iqra N Akhtar ◽  
Wei Huang ◽  
Ameer E Hassan ◽  
Mohammad Rauf A Chaudhry ◽  
...  
Keyword(s):  
United States ◽  
Carotid Artery ◽  
Carotid Artery Stenosis ◽  
The United States ◽  
Artery Stenosis ◽  
Teaching Hospitals ◽  
Trend Test ◽  
Carotid Revascularization ◽  
Asymptomatic Patients ◽  
Revascularization Procedures

Background: Carotid revascularization procedure, carotid endarterectomy (CEA) and carotid stent placement (CAS), are some of the most common procedures performed in United States and expected to change due to wider adoption of CAS. We performed this study to determine the changes in utilization of CEA and CAS in United States using nationally representative data. Methods: We used the National Inpatient Sample (NIS) from 2005 to 2014 to assess the changes in utilization of CEA and CAS over last 10 years in patients with symptomatic and asymptomatic carotid artery stenosis. NIS is the largest all payer dataset that includes diagnoses, admissions and discharge, demographics, and outcomes data of patients admitted to short stay non-Federal hospitals in the United States. We analyzed patterns of changes in utilization in various subsets of patients with carotid artery stenosis. Results: A total of 1,186,182 patients underwent carotid revascularization procedures during study period; 1,032,148 (87.1%) and 154,035 (12.9%) were CEA and CAS, respectively. The overall carotid revascularization procedures decreased over last 10 years (11.1% in 2005 to 8.4%in 2014, trend test p <.0001). Carotid revascularization in symptomatic patients increased (7.64% in 2005 to 11.01% in 2014, trend test p <.0001) while it decreased in asymptomatic patients (92.36% in 2006 to 88.99% in 2014, trend test p <.0001). There was an overall decrease in CEA (11.6% in 2005 to 8.3% in 2014, trend test <.0001) while in CAS remained unchanged (8.1% in 2005 to 8.9% in 2014, p=NS). There was an increase in carotid revascularization in teaching hospitals (40.9% in 2005 to 67.1% in 2014, trend test p <.0001) while decrease in non-teaching hospitals (50.9% in 2006 to 27.1% in 2014, trend test p <.0001). There was a decrease in carotid revascularization procedures in patients aged ≥80 years (19.8% in 2005 to 18.7% in 2014, trend test p <.0001) and CEA (19.6% in 2006 to 18.8% in 2014, trend test P<.0001) and CAS (21.2% in 2006 to 18.6% in 2014, trend test p=<.0001). Conclusion: Although CAS is increasing in a disproportionate manner within patient subgroups in United States, overall carotid revascularization procedures have decreased for unclear reasons.

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