Abstract 3171: Low Stroke Incidence In Asymptomatic Carotid Stenosis Under Optimal Risk Factor Control.

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Maria C Zurru ◽  
Laura Brescacin ◽  
Claudia Alonzo ◽  
Gabriela Orzuza ◽  
Fabiana Ortega ◽  
...  

Background: benefits of interventional procedures for the treatment of asymptomatic carotid stenosis (ACS) are still under debate. Our objective was to evaluate the risk of vascular events in a cohort of patients with ACS under optimal medical treatment. Methods: patients with ACS ≥50% were prospectively evaluated. Data on demographic and vascular risk factor profile and control under pharmacological treatment were collected. Severity of carotid stenosis was confirmed by at least two methods (Doppler ultrasonography, angioresonance, angiotomography or digital angiography) and evolution over time was evaluated by Doppler ultrasonography performed by the same operator, blinded to clinical data. Primary end-points were coronary events and ispsilateral ischemic stroke (IIS). Results: ninety two patients were included between January 2007 and December 2010. Mean age was 72±8 years, 35% were women. Mayor vascular risk factors were: hypertension (97%), dyslipidemia (90%), obesity (40%), diabetes (30%), smoking or former smoking (51%), history of coronary heart disease (37%) and peripheral vascular disease (32%). Average follow-up was 667±509 days (range 180-1870 days). Table 1 shows vascular risk factor control during follow-up. One IIS (1.08%; 95% CI 0.19-5.9; 5.8/1000 person/year) and 2 acute myocardial infarction (2.17%; 95% CI 0.6-7.5; 11.73/1000 person/year) were observed. Eighteen percent of patients had stenosis 50-70%, 68% between 70-90% and 13% ≥ 90%. After one year most of patients showed no changes in stenosis severity (76%), 5.56% had progression and 6.52% had regression; 14.1% had no control. Conclusion: optimal pharmacological treatment was related to a very low incidence of vascular events. These data reassert the efficacy of intensive medical treatment in delaying atherosclerotic plaque progression and carotid disease complications.

2021 ◽  
Vol 5 (1) ◽  
pp. 2514183X2110016
Author(s):  
Mandy D Müller ◽  
Leo H Bonati

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.


Stroke ◽  
2015 ◽  
Vol 46 (suppl_1) ◽  
Author(s):  
Dawn M Bravata ◽  
Jared Brosch ◽  
Jason Sico ◽  
Fitsum Baye ◽  
Laura Myers ◽  
...  

Background: The Veterans Health Administration has multiple quality improvement activities directed at improving vascular risk factor control. We sought to examine facility quality of blood pressure (BP) control (<140/90 mm Hg), lipid control (LDL-cholesterol <100 mg/dL) and glycemic control (HbA1c <9%) in the one-year after hospitalization for ischemic stroke or acute myocardial infarction (AMI). Methods: We assembled a retrospective cohort of patients hospitalized with stroke or AMI (fiscal year 2011). Facilities were included if they admitted ≥25 stroke patients and ≥25 AMI patients. A facility-level consolidated measure of vascular risk factor control was calculated for the 3 processes of care (number of passes divided by number of opportunities). Results: A total of 2432 patients had a new stroke and 4873 had a new primary AMI (at 75 facilities). Stroke patients had worse vascular risk factor control than AMI patients (mean facility rate on consolidated measure: stroke, 70% [95%CI 0.68-0.72] vs AMI, 77% [0.75-0.78]). The greatest disparity between stroke and AMI patients was in hypertension control: at 87% of hospitals, fewer stroke patients achieved BP control than AMI patients (mean facility pass rate: stroke, 41% vs AMI, 52%; p<0.0001). Overall there were no statistical differences for stroke versus AMI patients in facility-level hyperlipidemia control (71% vs 73%, p=0.33) and glycemic control (79% versus 82%, p=0.24). AMI patients had more outpatient visits than stroke patients in the year after discharge [AMI: mean 7.9 visits (standard deviation 6.1)]; stroke: mean 6.0 visits (standard deviation 4.5; p<0.0001].); the primary difference in outpatient utilization was additional cardiology visits for AMI patients (2.5 visits with cardiology per AMI patient vs 0.4 visits per stroke patient; p<0.001). Conclusions: These results demonstrated clinically substantial disparities in hypertension control among patients with stroke vs patients with AMI. It may be that cardiologists provided risk factor management to AMI patients that stroke patients did not receive. The etiology of these observed differences merits additional investigation.


Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Shimeng Liu ◽  
Wuwei Feng ◽  
Pratik Y Chhatbar ◽  
Bruce I Ovbiagele

Background: The overwhelming majority of strokes can be prevented via optimal vascular risk factor control. However, there remains an evidence practice gap with regard to treatment of vascular risk factors. With the rapid growth worldwide in cell-phone use, Internet connectivity, and digital health technology, mobile health (mHealth) technology may offer a promising approach to bridge these treatment gaps and reduce the global burden of stroke. Objective: To evaluate the effectiveness of mHealth in vascular risk factor control through a systemic review and meta-analysis. Methods: We searched PubMed from January 1, 2000 to May 17, 2016 using keywords: mobile health, mhealth, short message, cellular phone, mobile phone, stroke prevention and control, diabetes mellitus, hypertension, hyperlipidemia and smoking cessation. We performed a meta-analysis of all eligible randomized control clinical trials that assessed the long-term (at 6 months) effect of mHealth. Results: Of 79 articles identified, 13 of them met eligibility criteria (6 for glycemic control and 7 for smoking cessation) and were included for the final meta-analysis. There were no eligible studies for dyslipidemia or hypertension. mHealth resulted in greater HbA1c reduction at 6 months (6 studies; 663 subjects; SMD: -0.44; 95% CI: [-0.82, -0.06], P =0.02; Mean difference of decrease in HbA1c: -0.39%; 95% CI: [-0.74,-0.04], P =0.03). mHealth also led to relatively higher smoking abstinence rates at 6 months (7 studies; 9,514 subjects; OR: 1.54; 95% CI: [1.24, 1.90], P <0.0001). Conclusion: Use of mHealth improves glycemic control and smoking abstinence rates, two factors that may lead to better stroke outcomes. Future mHealth studies should focus on modifying premier vascular risk factors like hypertension, specifically in people with or at risk of stroke.


Author(s):  
Ji Y. Chong ◽  
Michael P. Lerario

Carotid stenosis is a risk factor for stroke. Revascularization of high-grade asymptomatic carotid stenosis in select patients can lower the risk of incident stroke. Endarterectomy and stenting are both associated with periprocedural risk. Risks and benefits need to be evaluated carefully before proceeding with any intervention. Certain patient demographic and clinical characteristics, such as female gender, may reduce the benefits of surgery and influence treatment decisions.


Neurology ◽  
2020 ◽  
Vol 95 (1) ◽  
pp. 29-36 ◽  
Author(s):  
James F. Meschia ◽  
Kevin M. Barrett ◽  
Robert D. Brown ◽  
Tanya N. Turan ◽  
Virginia J. Howard ◽  
...  

The coronavirus disease 2019 pandemic has disrupted the lives of whole communities and nations. The multinational multicenter National Institute of Neurological Disorders and Stroke Carotid Revascularization and Medical Management for Asymptomatic Carotid Stenosis Trial stroke prevention trial rapidly experienced the effects of the pandemic and had to temporarily suspend new enrollments and shift patient follow-up activities from in-person clinic visits to telephone contacts. There is an ethical obligation to the patients to protect their health while taking every feasible step to ensure that the goals of the trial are successfully met. Here, we describe the effects of the pandemic on the trial and steps that are being taken to mitigate the effects of the pandemic so that trial objectives can be met.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Ricarda D. Stauss ◽  
Gerrit M. Grosse ◽  
Lavinia Neubert ◽  
Christine S. Falk ◽  
Danny Jonigk ◽  
...  

AbstractInflammatory processes are crucial in atherosclerosis and atherothrombosis. This study aimed to identify a cytokine-pattern that is associated with plaque-vulnerability or symptomatic state in comprehensively investigated patients with symptomatic (sCS) and asymptomatic carotid stenosis (aCS). Twenty-two patients with sCS and twenty-four patients with aCS undergoing carotid endarterectomy (CEA) were considered. A cytokine-panel was measured in plasma-specimens prior to surgery and at a 90 day follow-up. Doppler-ultrasound detecting microembolic signals (MES) in the ipsilateral middle cerebral artery was performed. Carotid plaques were analysed regarding histopathological criteria of plaque-vulnerability and presence of chemokine receptor CXCR4. Correction for multiple comparisons and logistic regression analysis adjusting for vascular risk factors, grade of stenosis, antithrombotic and statin pretreatment were applied. In sCS-patients higher plasma-levels of Fractalkine (CX3CL1), IFN-α2, IL-1β, IL-2, IL-3, IL-7 were found compared to aCS-patients. CXCR4-expression on inflammatory cells was more evident in sCS- compared to aCS-plaques and was associated with vulnerability-criteria. In contrast, plasma-cytokine-levels were not related to CXCR4-expression or other vulnerability-criteria or MES. However, in both groups distinct inter-cytokine correlation patterns, which persisted at follow-up and were more pronounced in the sCS-group could be detected. In conclusion, we identified a distinct cytokine/chemokine-network in sCS-patients with elevated and closely correlated mediators of diverse functions.


Stroke ◽  
2013 ◽  
Vol 44 (3) ◽  
pp. 792-794 ◽  
Author(s):  
Simona Balestrini ◽  
Francesca Lupidi ◽  
Clotilde Balucani ◽  
Claudia Altamura ◽  
Fabrizio Vernieri ◽  
...  

Stroke ◽  
2014 ◽  
Vol 45 (suppl_1) ◽  
Author(s):  
Tanya N Turan ◽  
Azhar Nizam ◽  
Michael J Lynn ◽  
Jean Montgomery ◽  
Colin P Derdeyn ◽  
...  

Background and Purpose: Symptomatic intracranial stenosis patients with poorly controlled cholesterol and blood pressure had an increased risk of vascular events in WASID. Therefore, SAMMPRIS aggressive medical management protocols targeted these risk factors. We sought to determine if intensive risk factor control in SAMMPRIS resulted in lower risk of vascular events during follow-up. Methods: Data on 227 SAMMPRIS patients randomized to aggressive medical management alone were used for these analyses. Vascular risk factors were recorded at baseline, 30 days, and every 4 months. Additional follow-up and close-out visit data were also included. For each patient, values for all risk factor measures (from baseline until the time of an event) were averaged and dichotomized based on the risk factor target. Time to event curves for a vascular event (stroke, MI, and vascular death) were compared between subjects with and without risk factor control using the log-rank test and hazard ratios were calculated with Cox proportional hazards regression. Results: The univariate analyses are shown in the table. Subjects with mean follow-up SBP < 140 mm Hg (< 130 for diabetics), LDL < 70 mg/dL, and at least moderate exercise had lower risk of vascular events compared to those who did not achieve those targets. Control of other risk factors (HgA1c, smoking, non-HDL, and Body Mass Index) did not have a significant impact on outcome. Conclusions: Well controlled SBP and LDL during follow-up were predictors of lower vascular events in SAMMPRIS, confirming that SBP and LDL should be aggressively treated in patients with intracranial stenosis to prevent future vascular events. Exercise participation was also associated with fewer vascular events and should be strongly encouraged.


Author(s):  
Michael E. Hochman

This chapter provides a summary of the landmark surgical study known as the ACST trial, which compared surgical versus nonsurgical treatment for asymptomatic carotid stenosis. Is carotid endarterectomy (CEA) beneficial in asymptomatic patients with severe carotid stenosis? Starting with that question, the chapter describes the basics of the study, including funding, year study began, year study was published, study location, who was studied, who was excluded, how many patients, study design, study intervention, follow-up, endpoints, results, and criticism and limitations. The chapter briefly reviews other relevant studies and information, gives a summary and discusses implications, and concludes with a relevant clinical case involving vascular surgery.


2006 ◽  
Vol 21 (1) ◽  
pp. 15 ◽  
Author(s):  
Yun Jeong Lim ◽  
Young-Wook Kim ◽  
Yeon Hyen Choe ◽  
Chang-Seok Ki ◽  
Sue Kyung Park

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