Type of Article:  Original Research

Volume 5; Issue 1 (March 2017)

Page No.: 3611-3617

DOI: https://dx.doi.org/10.16965/ijar.2017.119


Vandana Ravi *1, Tejesh S 2.

*1 Assistant Professor, Raichur Institute of Medial Sciences, Raichur, Karnataka, India.

2 Resident, Navodaya Medical College, Raichur, Karnataka, India.

Address for Correspondence: Dr Vandana Ravi, Assistant Professor, Raichur Institute of Medial      Sciences, Raichur, Karnataka. E-Mail: drvandanar@gmail.com


Background : The human heart is supplied by two right and left coronary arteries which arise from ascending aorta .Left coronary artery is wider in diameter and its branches supplies greater volume of myocardium & larger part of interventricular septum. Right coronary artery supplies right atrium and right ventricle. Detailed appreciation of normal origin,course,branches and myocardial distribution of these vessels is vital so that variation of normal anatomy can be more easily recognized and it is must to identify the course of coronary artery disease and perform therapeutic, radiodiagnostic and surgical procedure.

Result: Study was conducted on 30 heart specimens. Coronary arteries (CA) were dissected to know origin, location of ostia in relation to sinotubular junction (STJ) & variation in branching pattern. No variation was found in the origin, but in 10% of specimen’s right coronary ostia was above the STJ and 90% of specimens it was below the STJ and in 93.3% of specimens left coronary ostia was below STJ and in 6.6% it was above STJ. The third coronary artery was found in 26.6% of specimens. Right coronary dominance was observed in 83.3%, Lt dominance in 13.3% and co-dominance in 3.3% of specimens. The mean length of trunk of LCA was found to be 14.5±4.42mm, minimum length we observed was 5mm,which is the shortest length of trunk of LCA reported so far and maximum length observed was 25mm. Bifuracation, trifurcation, tetrafurcation and pentafurcation of LCA was observed in 80%, 13.3%, 3.3%, and 3.3% of the specimen respectively.

Conclusion: An intimate knowledge of the coronary arteries the “Crown” of the heart and its variations is prerequisite for cardiac surgeons for proper diagnosis and treatment of cardiac ailments and for radiologists to refine the image interpretation.

Key words: Coronary, Sinotubular junction, Myocardial Bridge.


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Cite this article: Vandana Ravi, Tejesh S. ANATOMICAL VARIATION IN BRANCHING PATTERN AND DOMINANCE IN CORONARY ARTERIES: A CADAVERIC STUDY. Int J Anat Res 2017;5(1):3611-3617. DOI: 10.16965/ijar.2017.119