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Carotid atherosclerosis and risk for ischemic stroke in patients with atrial fibrillation on oral anticoagulant treatment.

Abstract：

BACKGROUND AND AIMS:Whether carotid atherosclerosis is associated with an increased risk for ischemic stroke in patients with atrial fibrillation (AF) on anticoagulant treatment is undefined. To explore this association, patients with AF on treatment with vitamin K antagonists were included in a multicenter, prospective study. METHODS:At inclusion in the study, patients underwent Doppler-ultrasonography for the assessment of carotid atherosclerosis and then were prospectively followed. Ischemic stroke or transient ischemic attack (TIA) were the primary study outcomes; death and its causes were reported. RESULTS:Overall, 587 patients were included in the study. At ultrasonography, 380 patients had carotid atherosclerosis (64.7%) and 45 internal carotid (ICA) stenosis ≥50% (7.7%). During a mean follow-up of 41 ± 15 months, 30 patients had an ischemic stroke or TIA (1.49% per patient-year, 95% CI 0.96-2.03) and 81 patients died (4.01% per patient-year, 95% CI 3.16-4.86). Carotid atherosclerosis was associated with a significant increase in the risk for the composite of ischemic stroke or TIA or death after adjusting for CHA2DS2VASc (6.0% vs. 3.1% patient-year; HR 1.60, 95% CI 0.99-2.59; p = 0.05). ICA ≥50% was associated with a not significant increase in the risk of ischemic stroke or TIA (2.05% vs. 1.45% patient-year; HR 1.39, 95% CI 0.42-4.58) or all-cause death (6.1% vs. 3.8% patient-year; HR 1.66, 95% CI 0.83-3.32). CONCLUSIONS:In patients with AF, carotid atherosclerosis is a predictor for the composite of cerebrovascular events or death while on anticoagulant therapy. In patients with AF and carotid atherosclerosis, the clinical benefit of a more intense antithrombotic treatment should be evaluated.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Becattini C,Dentali F,Camporese G,Sembolini A,Rancan E,Tonello C,Manina G,Padayattil S,Agnelli G

doi

10.1016/j.atherosclerosis.2018.02.004

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

177-181

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(18)30052-2

journal_volume

271

pub_type

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Carotid atherosclerosis and risk for ischemic stroke in patients with atrial fibrillation on oral anticoagulant treatment.