Level of Agreement Between Systematic Doppler Examination of the Lower Extremity and Diagnostic Angiography in the Setting of Peripheral Arterial Disease

摘要

Background: The objective of this investigation was to determine the level of agreement between a systematic clinical Doppler exam ination of the foot and ankle and diagnostic peripheral angiography. Methods: The described Doppler examination technique attempted to determine the patency, quality, and direction of the flow through the dorsalis pedis artery, posterior tibial artery, terminal branches of the peroneal artery, and vascular arch of the foot. These results were then compared with angiographic distal run-off images as interpreted by a blinded vascular surgeon. Results: Levels of agreement with respect to artery patency/quality ranged from 64.0% to 84.0%. Sensitivity ranged from 53.8% to 84.2%, and specificity ranged from 64.7% to 91.7%. Agreement with respect to arterial flow direction ranged from 73.3% to 90.5%.Conclusions: We interpret these results to indicate that this comprehensive physical examination technique of the arterial flow to the foot and ankle with a Doppler device might serve as a reasonable initial s urrogate to diagnostic angiography in some patients with peripheral arterial disease.