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英文誌(2004-)

Journal of Medical Ultrasonics

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2002 - Vol.29

Vol.29 No.01

Original Article(原著)

(J003 - J008)

超音波パルスドプラ法による大動脈血流伝播速度の測定と臨床的有用性に関する検討

Determination of Aortic Flow Propagation Velocity by Pulsed Doppler Echocardiography and its Clinical Usefulness

木村 豊1, 冨山 博史2, 吉田 秀夫3, 小林 祐子1, 小原 紀美子1, 菅野 勇1, 道場 信孝4

Yutaka KIMURA1, Hirofumi TOMIYAMA2, Hideo YOSHIDA3, Yuko KOBAYASHI1, kumiko OBARA1, Isamu SUGANO1, Nobutaka DOBA4

1帝京大学医学部附属市原病院中央検査部, 2東京医科大学第2内科, 3帝京大学医学部第3内科, 4帝京平成大学専門学校

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

キーワード : aortic flow propagation velocity, arteriosclerosis, cardiovascular risk factor, pulsed Doppler echocardiography, pulse wave velocity

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.