Small branches to the right atrium, ventricle, and conus or sinus node, are frequently observed. The RCA shows more displacement during the cardiac cycle than does the left coronary artery.

The degree of acceptable pulmonary hypertension, the need for concomitant atrial ... coronary artery, such as anomalous origin of the circumflex coronary artery from the right coronary sinus ...

An ostium primum atrial septal ... looking from the right atrium. 1 = Upper sinus venosus defect 2 = Lower sinus venosus defect 3 = Ostium secundum atrial septal defect 4 = Coronary sinus atrial ...