Morphological analysis and clinical significance of the opening of the third coronary artery

Introduction: The human heart is in most cases vascularized by two coronary arteries, the right artery (RCA) and left artery. supernumerary artery, which arises independently from aortic sinus passes through sub-epicardial adipose tissue of pulmonary conus anterior side ventricle called third (TCA). Methods: This study consisted 28 formalin-fixed adult cadaveric hearts. presence TCA was determined. position orifice excess arteries relation to sinotubular junction determined, then also “on o’clock level” RCA. radius these orifices their distance RCA were measured. angle between aorta TCA, as well branch, Results: A total 11 specimens had arteries. found formed with 60.09 ± 17.57, while branch an average value 89.88 15.92. all located below level junction. diameter 1.49 mm 0.41. 2.21 1.03. In 45.45% cases, at 10 level. Conclusion: present highlights TCA. It may constitute a significant collateral circulation contributing apical septal perfusion. Interpretation signs symptoms occlusion should therefore include possible contribution this vascular channel.