The Journal of Thoracic and Cardiovascular Surgery, Vol 71, 637-640, Copyright © 1976 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
Distribution and severity of atherosclerosis in the coronary arteries
JJ McNamara, RG Norenberg, HW Goebert 3d and JR Soeter
A postmortem study of 93 human hearts was undertaken. Gross inspection was
used to determine the degree of atherosclerosis and postmortem coronary
angiography to estimate the degree of luminal narrowing. The findings
indicate the following: (1) There is high correlation between the estimates
of luminal narrowing in the gross specimen and the presence of significant
atherosclerosis. (2) Approximately 30 per cent of vessels with significant
proximal disease will have significant distal coronary artery disease. (3)
When one coronary artery is involved with severe proximal atherosclerosis,
either of the other two vessels are likely to be involved, with a frequency
of 75 per cent ormore. (4) When significant distal disease is present the
proximal vessel is nearly always involved. (5) Patient selection prior to
referral to surgery may be partly responsible for the over 90 per cent
operability rate in patients undergoing coronary artery bypass grafting.