Abstract

PATTERN OF CORONARY ARTERY DOMINANCY IN KURDISH POPULATION AND ITS CORRELATION WITH THE EXTENT OF CORONARY ARTERY DISEASE

Jawad Mohammed Hawas*

Abstract

Background: There are many ways of classifying coronary circulation. Hettler defined the following types: Left coronary artery dominance (LCD), right coronary artery dominance (RCD), and codominance (COD). The vessel that supply the posterior descending artery and at least one posterolateral branch is called the dominant vessel. knowledge of variation of the pattern of coronary arterial distribution has practical application in the interpretation of coronary arteriography and in avoidance of selective perfusion of one major division of the left main artery, either at angiography or at operation Objective: To study the pattern of coronary artery dominancy in Kurdish population and its relationship with coronary artery disease. Patients and methods: A prospective observational study was carried out in the catheterization laboratory of Sulaimani Hospital for Cardiac Speciality in Sulaimaniyah city at the Kurdistan region of northern Iraq, 200 patients were studied between September first 2014 and October first 2015.Angiography of the right coronary artery was performed in at least 2 projections and the branches of the left coronary artery in at least 3 projections. Coronary angiograms were digitally saved and analyzed by two experienced cardiologists. Coronary dominancy, the extent and location of coronary involvement were determined. Results: The types of coronary circulation were RCD, LCD, and COD in 57%,23%, and 20% respectively. There was a significant association between RCD and coronary artery disease particularly 3 vessels disease and left main stem disease. Conclusion: RCD is the dominant type in the population we studied, although with a higher prevalence of LCD compared to other populations.

Keywords: Coronary artery dominancy, RCD, LCD