Abstract
IntroductionThis study is an attempt to document normal dimensions of the coronary artery branches during life by using quantitative coronary angiography and compare them with international studies. MethodQuantitative coronary angiography (QCA) of 100 patients undergoing evaluation of ischemic heart disease but found to be free of coronary artery disease. Measurement was done using catheter tip as a calibrating object. ResultsOut of 57% right dominant circulation 56.1% were of males and 44% of females. Left coronary dominance was seen in 17% of which 52.9% were male and 47% female, by contrast 26% subjects had co-dominant hearts with 61.5% male and 38.4% female. The mean diameter of the right coronary artery was significantly smaller (p < 0.05) in left dominant hearts as compared to that of dominant right. In contrast the mean diameter of the circumflex artery was significantly smaller (p < 0.05) in right dominant pattern as compared to that of patients with dominant left. Similarly the diameter of circumflex artery was significantly smaller in case of co-dominant type of circulation when compared to that of left coronary pattern of dominancy. DiscussionThe distribution pattern of coronary artery in the Nepalese population is distinct from that specified in the literature and the diameters of right coronary artery and circumflex artery are significantly influenced by the nature of dominance.
Published Version
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