Key result
Duplex scanning identifies >50% arterial stenoses with 82% sensitivity compared to angiography.
Why the study?
The accuracy of ultrasonic duplex scanning compared to angiography for localization and classification of arterial stenoses and occlusions needed prospective evaluation.
Does ultrasonic duplex scanning accurately diagnose aortoiliac and femoropopliteal disease compared to angiography?
Observational (n=32)
Blinded
Does ultrasonic duplex scanning accurately diagnose aortoiliac and femoropopliteal disease compared to angiography?
Effect estimate: kappa 0.55
Ultrasonic duplex scanning is a highly sensitive and specific non-invasive alternative to angiography for detecting significant aortoiliac and femoropopliteal stenoses.
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May support duplex scanning as non-invasive option for arterial stenosis; leaves open prospective validation before practice change.
Kohler et al. (1987) conducted an observational in Aortoiliac and femoropopliteal disease (n=32). Ultrasonic duplex scanning vs. Angiography was evaluated on Detection of >50% diameter reducing stenosis (kappa 0.55). Ultrasonic duplex scanning had 82% sensitivity and 92% specificity for detecting >50% arterial stenoses compared to angiography.