Estimated Flow Resistance Increase in a Spiral Human Coronary Artery Segment
Author:
Back L. H.1, Banerjee R. K.2
Affiliation:
1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 2. Bioengineering and Physical Science Program, Building 13, Room 3N17, National Institute of Health, Bethesda, MD 20892
Abstract
Coronary flow estimates were made for a spiral coronary artery segment (identified from a post-mortem replica casting) by using a modified Dean number based on the approximate coil radius of curvature, as suggested earlier. The estimates were found to correlate experimental pressure drop data for helical coiled tubes. Over a physiological range of mean Reynolds numbers from 100 to 400 for blood flow through main coronary arteries, estimates of the flow resistance increase relative to a straight lumen segment ranged from about 20 to 80 percent, and were of similar magnitude to those found in a flow study in a sinuous coronary vessel segment with no spiral. [S0148-0731(00)01706-4]
Publisher
ASME International
Subject
Physiology (medical),Biomedical Engineering
Reference28 articles.
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