Mousa et al correlated the severity of subclavian stenosis by atherosclerosis with the peak flow velocity on duplex ultrasonography. The authors are from West Virginia University.
Exam: duplex ultrasonography of the subclavian vein
Radiographic stenosis was determined by the NASCET style ratio in imaging studies.
Measurement: peak systolic velocity in cm per second
A peak flow > 280 cm per second was predictive of stenosis > 50% (sensitivity 74%, specificity 95%).
A peak flow > 240 cm per second was predictive of stenosis > 70% (sensitivity 91%, specificity 81%).
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