title: Right atrial electrocardiogram resulting in hemopericardium.
mesh_terms: D006328:Cardiac Catheterization / Q000009:adverse effects*; D004562:Electrocardiography; D006325:Heart Atria; D006335:Heart Injuries / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D010490:Pericardial Effusion