title: ECG of the month. The swinging heart. Electrical alternans.
authors.affiliation: Dept of Medicine, Texas Tech Regional Academic Health Center, El Paso.
authors.forename: J I
authors.initials: JI
authors.lastname: Martinez-Lopez
mesh_terms: D000293:Adolescent; D002305:Cardiac Tamponade / Q000175:diagnosis*; D004562:Electrocardiography; D006338:Heart Neoplasms / Q000175:diagnosis / Q000556:secondary; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D009382:Neoplasms, Unknown Primary; D010490:Pericardial Effusion / Q000175:diagnosis