CFA PSV 45 cm/s or less combined with a monophasic waveform is highly predictive of ipsilateral iliac occlusion. These results were independent of contralateral iliac and distal superior femoral artery disease. CFA color duplex US scanning may be considered an alternative technique to direct duplex scanning of the aortoiliac segment in patients being evaluated for inflow endoluminal or bypass procedures.

Twenty men were subjected to a brief period of perineal compression. Measurement of brachial, ankle and penile blood pressures revealed a reversible decrease in pressure. Penile pressure can be measured accurately. It represents an objective method of measuring vasculogenic impotence.

No abstract

A routine laboratory accuracy study for identifying an internal carotid artery (ICA) diameter stenosis of 70% using an ICA/CCA ratio of 4.0 revealed an overall accuracy of 85% but the positive predictive value (PPV) was noted to be only 56%. A subsequent Receiver Operating Characteristics (ROC) curve analysis compared carotid duplex measurements to arteriography in 239 carotid arteries. The analysis yielded new thresholds for single velocity and B-mode image measurements as follows: peak systolic velocity (PSV) 267 cm/sec, end diastolic velocity (edv) 99 cm/ sec, ICA/CCA ratio 4.2, and an image diameter measurement of 78%. The overall accuracy for each parameter was 91, 83, 90, and 89% respectively with PPV's of 65, 66, 66, and 74% each. Further analysis combining these best thresholds in all possible combinations revealed overall accuracies that ranged between 85–94%. The three best combinations with the highest overall accuracies were a) image diameter measurement >78% with ICA/CCA ratio >4.2 (94%), b) ratio >4.2 with PSV >267 cm/ sec (91%) and c) image diameter >78% with PSV >267 cm/sec (91%). The PPV's for these combinations were 86%, 80%, and 70% respectively.