Key result
Black patients with TIA show ~50% lower prevalence of culprit extracranial carotid disease vs White patients.
Why the study?
The prevalence of demonstrable carotid artery disease in patients with carotid system transient ischemic attacks was unclear.
Population
50 consecutive patients with carotid system transient ischemic attacks admitted to a large city hospital
Comparison
Patients with abnormal appropriate extracranial carotid artery vs patients with no abnormality in appropriate artery
Design
Observational cohort study with cerebral angiograms
Authors
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Racial differences may prompt broader TIA etiology evaluation in Black patients; leaves open mechanisms and generalizability.
Observational (n=50)
No
Absolute Event Rate: 28% vs 56%
p-value: p=<0.05
In patients presenting with carotid system TIAs, white patients demonstrated a significantly higher prevalence of appropriate extracranial carotid artery disease compared to black patients.
Louis Russo (1981) conducted an observational in Carotid system transient ischemic attacks (n=50). Black race vs. White race was evaluated on Demonstrable abnormality in the extracranial carotid artery appropriate to symptoms (p=<0.05). Black patients with carotid system transient ischemic attacks had a significantly lower prevalence of appropriate extracranial carotid artery abnormalities than white patients (28% vs 56%, p<0.05).
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