Right ventricle and pericardial sac injection study showing tricuspid regurgitation, perforation of the right ventricle (RV) and injection of contrast material into the pericardial sac (P) as well as the RV.

Aortic injection study in the same dog with cardiac perforation shown in 011A. The coronary artery distribution reveals the borders of the heart (arrow) distinct from blood in the pericardial sac (P). The straightened left subclavian artery (LSA) indicates low blood pressure.