1Department of Clinical Laboratory, Teikyo University Ichihara Hospital, 2Second Department of Internal Medicine, Tokyo Medical College, 3Third Department of Internal Medicine, Teikyo University School of Medicine, 4Teikyo Heisei University,College of Rehabilitation Technology
We examined aortic flow propagation velocity (AFPV) using pulsed Doppler echocardiography to evaluate arteriosclerosis in 320 patients (207 males and 113 females; mean age, 59.2賊10.3 years) with various heart diseases. AFPV was measured by placing the ultrasonic probe on the supraclavicular fossa and supraumbilical region, where aortic blood flow signals were recorded. The time lag between the onset of the two aortic flow waveforms was measured using the R wave of a simultaneously recorded electrocardiogram. Thus, AFPV was obtained by dividing the distance between the two probe sites by the time lag. The conventional method for measuringpulse wave velocity (PWV) with an ordinary mechanocardiogram was also performed immediately after the pulsed Doppler procedure in 36 patients to compare results obtained by the two methods. A significant positive correlation was obtained between AFPV and PWV (r=0.494, p=0.002), and PWV was higher than AFPV. Increase in AFPV and number of cardiovascular risk factors were also associated. We conclude that using this method to determine AFPV could prove useful in evaluating arteriosclerosis.