Interpretation of Doppler segmental pressures in peripheral vascular occlusive disease.
Measurement of Doppler segmental arterial pressures in the lower extremity using narrow pneumatic cuffs has become a standard noninvasive diagnostic technique. Correlation between arteriographic and noninvasive studies was available for 345 aortoiliac segments and 326 femoropopliteal segments. If stenoses of 50% or greater and occlusions were considered hemodynamically significant, the sensitivity to aortoiliac disease was 97%, but only 67% to femoropopliteal disease. The specificity for hemodynamically insignificant disease was 50% and 68%, respectively. Accuracy was influenced by the presence of associated aortoiliac or femoropopliteal disease. The sensitivity to hemodynamically significant femoropopliteal disease was 55% if there was associated aortoiliac disease, and 89% in its absence. In the presence of significant femoropopliteal disease, specificity for the absence of aortoiliac disease decreased from 70% to 41%.
D000792:Angiography; D001011:Aorta / Q000503:physiopathology; D001157:Arterial Occlusive Diseases / Q000503:physiopathology*; D001794:Blood Pressure; D005263:Femoral Artery / Q000503:physiopathology; D006801:Humans; D007083:Iliac Artery / Q000503:physiopathology; D011150:Popliteal Artery / Q000503:physiopathology; D014463:Ultrasonography