Ja. Vandervliet et al., DOPPLER SPECTRUM ANALYSIS VERSUS DIRECT FEMORAL-ARTERY PRESSURE MEASUREMENT FOR RAPID ASSESSMENT OF AORTOILIAC OBSTRUCTION, Journal of ultrasound in medicine, 16(8), 1997, pp. 525-528
Citations number
16
Categorie Soggetti
Acoustics,"Radiology,Nuclear Medicine & Medical Imaging
Adequate patient selection is required to limit the clinical workload
and improve the cost-effectiveness of noninvasive hemodynamic evaluati
on of the aortoiliac system. In a prospective blinded fashion the trad
itional invasive technique of direct femoral artery pressure measureme
nts and the computerized Doppler spectrum analysis of blood flow veloc
ities in the common femoral artery were studied. Both tests for rapid
assessment of aortoiliac obstruction were compared with duplex ultraso
nographic imaging, using a peak systolic velocity ratio of 2.5 to demo
nstrate stenoses of 50% or more. In a series of 17 consecutive patient
s (34 aortoiliac segments) with suspected aortoiliac obstructive disea
se, a good level of agreement (kappa = 0.6) was found for both methods
when compared with duplex scanning. Analysis of deviations from the d
uplex registrations indicated an overestimation of the pathologic case
s using femoral artery pressure measurements and an underestimation us
ing Doppler spectrum analysis of blood flow velocities in the common f
emoral artery. Both methods were well tolerated, but femoral artery pr
essure measurements had a higher technical failure rate. Because of it
s noninvasive character and its feasibility the Doppler technique is p
referred for the selection of patients for more extensive duplex sonog
raphic investigation.