Dr. S. Priyadharshini, Dr. M. Sivakumar, Dr. Mark Christopher Arokiaraj, Dr. V. Nagaguhan


PURPOSE:  With ever increasing load of coronary arterial disease on population of developed as well as developing countries, it has become mandatory to have a detailed knowledge about coronary arteries. Since adequate literature regarding coronary arteries and its association with coronary artery disease in people living in and around puducherry is not available, a study of coronary arteries by coronary angiogram was undertaken.

AIMS AND OBJECTIVES:  To study the dominance pattern  of coronary arteries and its association with coronary artery disease

MATERIALS AND METHODS: 200 adult coronary angiogram were studied during angiography.The origin of posterior interventricular artery was taken as the basis of dominance.coronary artery disease is considered significant if the stenosis is >70% in the luminal diameter of anterior interventricularartery,right coronary artery and circumflex artery.

RESULTS: In this study, the right, left and co dominance were found to be 59%, 17.5%, and 23.5% respectively. Out of 200 subjects 112 had CAD ((56%).CAD was seen in 65.7% of patients with left dominance, 57.4% of patients with co dominance and 52.5% of patients with right dominance. The association was not statistically significant.

CONCLUSION: The majority of hearts are right dominant. CAD was more common in those with left dominance there was no statistically significant association between coronary dominance and  coronary artery disease.


Coronary artery,coronary artery disease,coronarydominance, right dominant, left dominant

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