title: Acoustic, mechanical and electric alternans in hemopericardium of occult leukemic origin.
mesh_terms: D000293:Adolescent; D002339:Carotid Arteries; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006801:Humans; D007938:Leukemia / Q000097:blood / Q000150:complications*; D008297:Male; D010490:Pericardial Effusion / Q000209:etiology* / Q000503:physiopathology; D010496:Pericardium / Q000601:surgery; D010701:Phonocardiography; D011674:Pulse; D011677:Punctures