title: Slow bigeminal rhythm in a 91-year-old woman.
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis*; D006339:Heart Rate; D006801:Humans; D012848:Sinoatrial Block / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology / Q000628:therapy