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RESEARCH PAPERS: Additional Research Papers

Blood Velocity Patterns in Poststenotic Regions and Velocity Waveforms for Myocardial Inflow Associated With Coronary Artery Stenosis in Dogs

[+] Author and Article Information
F. Kajiya, O. Hiramatsu, A. Kimura, T. Yamamoto, T. Yada, Y. Ogasawara, K. Tsujioka

Department of Medical Engineering and Systems Cardiology, Kawasaki Medical School, 577, Matsushima, Kurashiki, Okayama 701-01, Japan

J Biomech Eng 114(3), 385-390 (Aug 01, 1992) (6 pages) doi:10.1115/1.2891399 History: Received October 25, 1990; Revised November 01, 1991; Online March 17, 2008

Abstract

Velocity profiles across a vessel were investigated in poststenotic regions of the canine left coronary artery by our 80-channel 20 MHz ultrasound velocimeter. The velocity waveform in a small artery just before its penetration into myocardium was measured by our laser Doppler method. The poststenotic velocity configuration was characterized by a narrow region of high velocity with diastolic reverse flow near the wall which may dissipate energy. The velocity waveform in the distal small arteries exhibited increased systolic reverse flow with decreased diastolic forward flow, resulting in a remarkable reduction of coronary inflow into the myocardium.

Copyright © 1992 by The American Society of Mechanical Engineers
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