Key result
Direct carotid Doppler yields only ~9% sensitivity for detecting severe carotid stenosis compared to arteriograms.
Why the study?
Does audible interpretation of direct carotid Doppler signals accurately detect carotid stenosis or occlusion compared to carotid arteriography?
Population
101 patients (199 vessels) undergoing carotid artery evaluation
Comparison
Direct interrogation of the common, internal… vs Independently assessed carotid arteriograms
Design
Cross-sectional, Independently assessed carotid arteriograms
Authors
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Low sensitivity limits ruling out severe carotid stenosis; leaves open the adjunctive role of audible direct Doppler versus arteriography.
Observational (n=101)
Does audible interpretation of direct carotid Doppler signals accurately detect carotid stenosis or occlusion compared to carotid arteriography?
Direct carotid Doppler signal analysis with audible interpretation provides high specificity and predictive value for evaluating carotid stenosis, and is noted to be more accurate than indirect periorbital Doppler screening.
Robert W. Barnes (1981) conducted an observational in Carotid stenosis or occlusion (n=101). Direct carotid Doppler signal analysis vs. Carotid arteriograms was evaluated on Sensitivity in detecting severe (≥50%) stenosis or occlusion. Direct carotid Doppler signal analysis demonstrated a 9.2% sensitivity and 91% specificity in detecting severe carotid stenosis or occlusion compared to carotid arteriograms.
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