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 coronary angiogram (CAG) showed 80% focal stenosis in the distal portion of the right coronary artery ... The EKG showed sinus rhythm with an old left bundle branch block.

They predominantly arise from the right coronary sinus (70 per cent of cases), followed by the non-coronary sinus (25 per cent), with occurrences from the left coronary sinus being extremely rare.