Key result
Carotid artery stenosis of ≥50% was not significantly predictive of stroke in patients with atrial fibrillation treated with aspirin or warfarin (RR 1.3; 95% CI 0.5-3.6; P=0.55).
Why the study?
Does the presence of carotid stenosis ≥50% predict subsequent stroke in patients with atrial fibrillation receiving aspirin or warfarin?
Observational (n=676)
Does the presence of carotid stenosis ≥50% predict subsequent stroke in patients with atrial fibrillation receiving aspirin or warfarin?
Relative Risk: 1.3 (95% CI 0.5–3.6)
p-value: p=.55
Routine carotid ultrasonography is not warranted in asymptomatic patients with atrial fibrillation, as carotid stenosis does not independently predict stroke risk in those receiving antithrombotic therapy.
No takes yet. Share an insight, caveat, or question.
Does not support routine carotid imaging in AF on antithrombotics; leaves open whether stenosis refines risk stratification.
Merrill C. Kanter (1994) conducted an observational in Atrial fibrillation (n=676). Carotid artery stenosis ≥50% vs. No carotid artery stenosis ≥50% was evaluated on Stroke (RR 1.3, 95% CI 0.5-3.6, p=.55). Carotid artery stenosis of ≥50% was not significantly predictive of stroke in patients with atrial fibrillation treated with aspirin or warfarin (RR 1.3; 95% CI 0.5-3.6; P=0.55).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: