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Circulation, Vol 62, 485-490, Copyright © 1980 by American Heart Association

ARTICLES

Clinical and pathologic features of obstructive disease in the predominant right and left coronary circulations in man

RJ Boucek, R Romanelli, WH Willis Jr and WA Mitchell

The clinical features and the location and severity of obstructive coronary artery disease are contrasted in 98 patients with predominant left and 99 patients with predominant right coronary circulations. A significantly higher incidence of ventricular conduction disturbances and a greater incidence and severity of obstructive coronary artery disease (greater than or equal to 70% cross-sectional narrowing in the proximal left anterior descending, circumflex and right coronary arteries and their major branches) distinguish the predominant left from the predominant right coronary circulation. The results suggest an anatomically disadvantaged status for the predominant left compared with the predominant right coronary circulations with respect to ventricular conduction disturbances and to coronary atherogenesis in man.