Key result
Carotid duplex ultrasound demonstrating a dampened, widened waveform with low peak systolic velocity (21.6 cm/s) in the common carotid artery suggests a proximal stenosis.
Recognition of common carotid artery dampening on Doppler ultrasound is crucial for identifying proximal arterial stenosis that might otherwise be missed.
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Hriljac et al. (2003) studied Proximal carotid artery stenosis. Carotid duplex ultrasound was evaluated. Carotid duplex ultrasound demonstrating a dampened, widened waveform with low peak systolic velocity (21.6 cm/s) in the common carotid artery suggests a proximal stenosis.
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