The "late systolic heartbeat" of pericardial effusion.
D002932:Cineangiography; D004562:Electrocardiography; D005260:Female; D006326:Heart Auscultation; D006801:Humans; D008875:Middle Aged; D010490:Pericardial Effusion / Q000175:diagnosis*; D013902:Radiography, Thoracic; D014465:Ultrasonics