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Vascular Medicine, Vol. 4, No. 2, 77-81 (1999)
DOI: 10.1177/1358836X9900400204

Combination of pressure and velocity parameters in the non-invasive diagnosis of aorto-iliac disease

Arnost Fronek

Department of Surgery and Bioengineering, University of California, San Diego, Veteran’s Administration Medical Center, La Jolla, San Diego, USA

Steve Oglevie

Veteran’s Administration Medical Center, La Jolla, San Diego, USA

Barbara Curran

Veteran’s Administration Medical Center, La Jolla, San Diego, USA

Kitty Fronek

Department of Surgery and Bioengineering, University of California, San Diego

Three different femoral artery flow velocity parameters in combination with segmental pressure measurements were evaluated for their respective diagnostic value in identifying the presence or absence of hemodynamically significant aorto-iliac disease.

A total of 60 patients (119 legs) were examined both non-invasively and with arteriography. Doppler flow velocities were recorded using a 5-MHz CW Doppler velocity metering system. Of the three parameters used (peak velocity, decay time and deceleration), a decay time of 220 ms yielded the most practical discriminant value. The accuracy increases when in addition the upper thigh/arm pressure ratio values are considered.

The results indicate that the combination of femoral artery decay time with the upper thigh/arm pressure index provides a simple and accurate non-invasive screening method to confirm or rule out aorto-iliac disease. This helps to determine whether the patient is a candidate for arteriography and for potential surgical intervention.

Key Words: aorto-iliac disease • Doppler velocity • segmental pressures


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