title: Electrocardiogram of the month. Atrial bigeminy with sinus and atrioventricular nodal entrance block and normal sinoatrial conduction time.
mesh_terms: D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012848:Sinoatrial Block / Q000503:physiopathology*; D012849:Sinoatrial Node / Q000502:physiology*