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February 2021; 11 (1) Research

Equipoise in Management of Patients With Acute Symptomatic Carotid Stenosis (Hot Carotid)

Aravind Ganesh, Luca Bartolini, Ravinder-Jeet Singh, Abdulaziz S. Al-Sultan, David J.T. Campbell, John H. Wong, Bijoy K. Menon
First published February 5, 2020, DOI: https://doi.org/10.1212/CPJ.0000000000000812
Aravind Ganesh
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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Luca Bartolini
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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Ravinder-Jeet Singh
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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Abdulaziz S. Al-Sultan
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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David J.T. Campbell
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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John H. Wong
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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Bijoy K. Menon
Department of Clinical Neurosciences (AG, R-JS, ASA-S, JHW, BKM), University of Calgary, Canada; Clinical Epilepsy Section (LB), National Institutes of Health, Bethesda, MD; Centre for Urban Health Solutions (DJTC), St. Michael's Hospital, Toronto, Canada; and Department of Medicine (DJTC), Department of Community Health Sciences (DJTC, BKM), Department of Radiology (JHW, BKM), and The Hotchkiss Brain Institute (JHW, BKM), University of Calgary, Canada.
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Citation
Equipoise in Management of Patients With Acute Symptomatic Carotid Stenosis (Hot Carotid)
Aravind Ganesh, Luca Bartolini, Ravinder-Jeet Singh, Abdulaziz S. Al-Sultan, David J.T. Campbell, John H. Wong, Bijoy K. Menon
Neurol Clin Pract Feb 2021, 11 (1) 25-32; DOI: 10.1212/CPJ.0000000000000812

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Abstract

Objective To explore differences in antithrombotic management of patients with acutely symptomatic carotid stenosis (“hot carotid”) awaiting revascularization with endarterectomy or stenting (CEA/CAS).

Methods We used a worldwide electronic survey with practice-related questions and clinical questions about 3 representative scenarios. Respondents chose their preferred antithrombotic regimen (1) in general, (2) if the patient was already on aspirin, or (3) had associated intraluminal thrombus (ILT) and identified clinical/imaging factors that increased or decreased their enthusiasm for additional antithrombotic agents. Responses among different groups were compared using multivariable logistic regression.

Results We received 668 responses from 71 countries. The majority favored CT angiography (70.2%) to evaluate carotid stenosis, CEA (69.1%) over CAS, an aspirin-containing regimen (88.5%), and a clopidogrel-containing regimen (64.4%) if already on aspirin. Whereas diverse antithrombotic regimens were chosen, monotherapy was favored by 54.4%–70.6% of respondents across 3 scenarios. The preferred dual therapy was low-dose aspirin (75–100 mg) plus clopidogrel (22.2%) or high-dose aspirin (160–325 mg) plus clopidogrel if already on aspirin (12.2%). Respondents favoring CAS more often chose ≥2 agents (adjusted odds ratio [aOR] vs CEA: 2.00, 95% confidence interval 1.36–2.95, p = 0.001) or clopidogrel-containing regimens (aOR: 1.77, 1.16–2.70, p = 0.008). Regional differences included respondents from Europe less commonly choosing multiple agents if already on aspirin (aOR vs United States/Canada: 0.57, 0.35–0.93, p = 0.023), those from Asia more often favoring multiple agents (aOR: 1.95, 1.11–3.43, p = 0.020), vs those from the United States/Canada preferentially choosing heparin-containing regimens with ILT (aOR vs rest: 3.35, 2.23–5.03, p < 0.001). Factors increasing enthusiasm for ≥2 antithrombotics included multiple TIAs (57.2%), ILT (58.5%), and ulcerated plaque (57.4%); 56.3% identified MRI microbleeds as decreasing enthusiasm.

Conclusions Our results highlight the heterogeneous management and community equipoise surrounding optimal antithrombotic regimens for hot carotids.

Footnotes

  • Funding information and disclosures are provided at the end of the article. Full disclosure form information provided by the authors is available with the full text of this article at Neurology.org/cp.

  • Received September 4, 2019.
  • Accepted December 3, 2019.
  • © 2020 American Academy of Neurology
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