Assessment of aortoiliac disease using hemodynamic measures
P. J. Breslau, P. J. Jorning and J. M. Greep
To study the role of accurate hemodynamic assessment of aortoiliac disease,
intra-arterial pressure measurements of 100 aortoiliac segments were
compared with Doppler velocity waveform analysis and contrast
arteriography. By applying the statistic kappa, we assessed the degree of
agreement among the three methods corrected for chance. The agreement
between pressure measurements and contrast arteriography provided a kappa
of 0.41, as did the agreement between pressure measurements and velocity
waveform analysis. Our results indicate that contrast arteriography and
Doppler studies underestimate hemodynamically significant aortoiliac
disease. Since the correlation is so poor, it is essential to use
intra-arterial pressure measurements in every patient who is a candidate
for surgery.
