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An Anatomic Study of Branching Pattern of Right Coronary Artery (RCA)

Charanjeet Kaur , Charanjeet Kaur , Navtej Singh , Jyotsna Singh , Prithpal S. Matreja

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Indian Journal of Anatomy 3(2):p 111-118, April - June 2014. | DOI:

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Abstract

Introduction: Malformations of position of ostia and origin of coronary arteries leads to potentially fatal significance unless diagnosed and treated surgically, because the coronary artery, and the myocardium it supplies, is fed with pulmonary rather than systemic blood. The present study aims to establish morphometry and pattern of right coronary artery with a special emphasis on its branching pattern, anastomoses and area of distribution. Material and Methods: The hearts of 25 adult human cadavers comprised the material for the study. The branching pattern of the Right Coronary Artery along with any variation were observed and noted down. Drawing of each artery was made and each specimen was photographed. The data was collected, finalized, analyzed & compared with the available data. Results: The observations from present study show that there is lot of variation in number, site of origin, and area supplied by the RCA. In 10 specimens a third coronary artery was seen arising from anterior aortic sinus just in front of the proper right coronary artery, 21 cases (84%) the posterior interventricular artery was a continuation of right coronary artery. In 21 specimens single conus artery was found out of which in 15 specimen conus artery was seen arising from RCA. In 18 specimens single marginal artery was found. Conclusion: The number of variations seen in branching pattern of RCA it becomes very difficult to assign the normal pattern.

Keywords: Coronary artery; Marginal artery; Conus artery; Variations; Branching pattern.

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