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Open AccessJournal ArticleDOI

Beneficial Effects of Clopidogrel Combined With Aspirin in Reducing Cerebral Emboli in Patients Undergoing Carotid Endarterectomy

TLDR
This is the first study to show that a CEA patient’s postoperative thromboembolic potential can be significantly reduced by targeted preoperative antiplatelet therapy without increasing the risk of bleeding complications.
Abstract
Background— Postoperative thromboembolic stroke affects 2% to 3% of patients undergoing carotid endarterectomy (CEA) and is preceded by 1 to 2 hours of increasing cerebral embolization. Previous work has demonstrated that high rates of postoperative embolization are associated with increased platelet reactivity to adenosine 5′-diphosphate (ADP). Our hypothesis was that preoperative administration of the platelet ADP antagonist clopidogrel could reduce postoperative embolization. Methods and Results— One hundred CEA patients on routine aspirin therapy (150 mg) were randomized to 75 mg clopidogrel (n=46) or placebo (n=54) the night before surgery. Platelet response to ADP was assessed by whole-blood flow cytometry. The number of emboli detected by transcranial Doppler within 3 hours of CEA was independently quantified. Time taken from flow restoration to skin closure was used as an indirect measure of the time to secure hemostasis. In comparison with placebo, clopidogrel produced a small (8.8%) but signific...

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Journal ArticleDOI

Aspirin plus Clopidogrel as Secondary Prevention after Stroke or Transient Ischemic Attack: A Systematic Review and Meta-Analysis

TL;DR: Short-term aspirin in combination with clopidogrel is more effective as secondary prevention of stroke or TIA without increasing the risk of hemorrhagic stroke and major bleeding events and the clinical applicability of the findings of this systematic review needs to be confirmed in future clinical trials.
Journal Article

[ACC/AHA 2007 Guidelines on Perioperative Cardiovascular Evaluation and Care for Noncardiac Surgery].

TL;DR: ACC/AHA TASK FORCE MEMBERS Sidney C. Smith, Jr, MD, FACC, FAHA, Chair; Alice K. Jacobs, MD., Vice Chair; Cynthia D. Tarkington, RN; Clyde W. Yancy,MD, F ACC.
Journal ArticleDOI

2009 ACCF/AHA Focused Update on Perioperative Beta Blockade Incorporated Into the ACC/AHA 2007 Guidelines on Perioperative Cardiovascular Evaluation and Care for Noncardiac Surgery

TL;DR: It is essential that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states.
References
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Journal Article

A randomised, blinded, trial of clopidogrel versus aspirin in patients at risk of ischaemic events(CAPRIE).

Denis Clement
- 01 Jan 1996 - 
TL;DR: Long-term administration of clopidogrel to patients with atherosclerotic vascular disease is more effective than aspirin in reducing the combined risk of ischaemic stroke, myocardial infarction, or vascular death.
Journal Article

Collaborative overview of randomized trials of antiplatelet therapy .1. prevention of death, myocardial-infarction, and stroke by prolonged antiplatelet therapy in various categories of patients

R Altman, +418 more
- 08 Jan 1994 - 
TL;DR: There was no appreciable evidence that either a higher aspirin dose or any other antiplatelet regimen was more effective than medium dose aspirin in preventing vascular events, so in each of the four main high risk categories overall mortality was significantly reduced.
Journal ArticleDOI

Benefit of carotid endarterectomy in patients with symptomatic moderate or severe stenosis. North American Symptomatic Carotid Endarterectomy Trial Collaborators.

TL;DR: Benefit of carotid endarterectomy was greatest among men, patients with recent stroke as the qualifying event, and patients with hemispheric symptoms, and decisions about treatment for patients in this category must take into account recognized risk factors.
Journal Article

Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European carotid surgery trial (ECST)

TL;DR: Carotid endarterectomy is indicated for most patients with a recent non-disabling carotid-territory ischaemic event when the symptomatic stenosis is greater than about 80%, but age and sex should also be taken into account in decisions on whether to operate.
Journal ArticleDOI

Clopidogrel for coronary stenting: response variability, drug resistance, and the effect of pretreatment platelet reactivity.

TL;DR: Interindividual variability in the platelet inhibitory response from clopidogrel occurs in patients undergoing elective coronary stenting, and patients with high pretreatment reactivity are least protected.
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